Using the Agfa Isolette camera

Carrying on from a previous post on the Agfa Isolette The opportunity to use the camera was provided by a break in the weather - it cleared enough not to be soaked as soon as you leave the house.

The flip out film holder makes it easy to load a new roll of film. There are in built springs that provide friction, so the film is kept tort, keeping it as flat as possible at the focal plane reducing distortion. The film back clicks shut with a reassuring clunk. It also has a little red window in the back with a sliding cover in which to view the film numbers as you wind on. The film is advanced with a knob on the top right hand side of the camera that has a built in reminder to wind on after each exposure otherwise the shutter will not set.

To reveal the lens you press a button on the top left hand side. In this case the lens followed by the bellows leaps forward from the front of the camera with an enthusiasm that can knock it out of your hands if you are not prepared for such athleticism. Once the front is open you are presented with the five main controls: lens focus, a full set of apertures from F4.5 all the way up to F32. A limited number of shutter speeds: B, 25^th, 50^th, 100^th and 200^th A self timer and most importantly a lever that primes the shutter for release. The only other thing present is a connection for flash.

On the top of the camera is the shutter release that allows a remote cable to be fitted, a cold shoe for a range finder or other accessories and another knob that has four settings marked Col NK, NT, K and T. (I do not have a clue as to what they represent.) As far as I can tell it has had no affect on my negatives. It has a viewer and a tripod mount.

After I got used to the idea of guessing what the distance should be set to and then remembering to alter it for different views, I found myself taking shots quickly almost like an automatic. I did take light readings to start with but it became clear that the light levels were stable enough not to need checking for each shot.

It became clear that there was a problem once the negatives had been developed. Some how light was getting into the camera. Having checked it carefully before hand I should have carried on and cut a piece of light sensitive paper to fit the camera and left it for a minute to make sure. Once the paper had been developed in the normal way it would have shown that light was leaking in from the bottom right corner of the exposure chamber indicating a problem with the bellows.

I'm a little disappointed with myself for not doing this check in the first place. If I had followed through with the test, I wouldn't have had a duff set of negs'!. It would have made an interesting set of prints as the gremlin's face in the tree roots shows.

An Agfa Isolette has laneded

Recently a package arrive from a friend that was giving away a number of Agfa  Isolette cameras. I put my name down for one, not quite expecting to have my name pulled out of the hat. As it turned out not that many people were interested. The cameras were advertised as not tried and tested so you could end up with one that may not be in proper working order. However they are easy to repair if there is a problem.

 As it turns out, the one I have does not have any faults that I can find apart from needing a major clean. It has the dustiest insides I have seen in a long time with the bellows being full of fluff.  I have carefully cleaned it out using compressed air and a damp cotton bud. Having first earthed myself to reduce the static in my body. The lens was slightly dirty which has been gently cleansed with lens fluid on a cotton bud.

 

The Agfa Isolette was introduced in the 1950. It produces a 6x6 negative making it a member of the 120 medium format family. The camera pictured is an Isolette 2 With the press of a button the front flips open to reveal an 85 mm Apotar 1.4,5 lens that shuts down to F22 and has a shutter speed range from B to 200 hundredths of a second.  For a completely manual camera it is well designed and sophisticated, even by today’s standards. It has a number of features that shows its quality, firstly with a film holder that flips out of the camera back to allow the easy installation of a new roll. A shutter lock on the winding mechanism that can only be removed by advancing the film, helping to prevent double exposures. Although the lens has a focus ring it is not a range finder and therefore distances have to be guestimated. A range finder device was produced as an extra that clipped into the shoe on the top. It's compact size makes it just right to slip into the pocket of a gentleman's jacket, although the all metal construction makes it a little bit heavy for comfort.

With all the cleaning and checking done, all that remains is some good weather so the camera can be put through its paces.

To be sharp or not, how is the question.

Fg 1.
Film FP4+ developed in ID11 printed
on Ilford MG RC gloss.

A subject that is talked about by all photographers. No matter how you like to label it DOF or boken I am surprised that depth of field can be expressed by some in the terms of good and bad. Surely it is subjective and down to the person who has composed the picture.

So what is depth of field and how does it work?

Depth of field relates to the area of the image that is sharp. So the subject  you focus on in the view finder will be in the middle of the sharpness. How much this extends in front of or behind it, is dictated by the aperture you use. Small F number (large opening) very shallow, large F number (small opening) very wide. The other factor to have a bearing is the focal length of the lens used.  For example, with a wide angle 28 mm lens you would not require the focus to be exact because the depth of field would be quite considerable in front of and behind the point of focus even at small f numbers (large apertures). But with a Telephoto lens of 200 mm the point of focus needs to be precise as the depth of field is quite narrow even at large f numbers (small apertures).

Fg 2.
Kodak colour plus negative. scanned
 from print.

In understanding the way depth of field works you need to know that when you focus on the subject it is at that point the reflected light arrives at the focal plan as fine points of light (sharp). The subjects closer to the lens do not resolve as sharp until they are beyond this point and those further away reach pin sharp before they arrive, because of this they arrive as discs known as circles  of confusion. The larger the circles the softer the images appearance. By making the aperture smaller (large F number) you reduce the circles of confusion giving the picture the appearance of full depth of field. (sharp from front to back). The eye considers points of light as large as 0.25 mm diameter as sharp. The same applies to the dot pitch of a computer screen. When it come to the manufacturer of lenses for 35mm format cameras this figure is much smaller 0.08, this is because the maker has worked out  that on average a 35 mm negative will be enlarged by twenty times (a print size of 10 x 8.)

The good thing about using a film camera is that  you can check on how heavy the points of confusion will be by pressing the depth of field preview button. The advantage I have is I know what to expect from my lenses at particular apertures. This allows me to compose the picture with the amount of soft focus  I think will enhance it.

For example the three pictures included with this post.

•         Fg. 1 The main reason for the cats paw being out of focus is to add depth and a sense of being very close.

Fg 3.
FP4+ developed in ID11 printed on
Iford MG RC gloss

•         Fg. 2 The main reason for blurring the background is to exclude a large group of people walking towards me. They did not add anything to the picture I had in mind. By adjusting the aperture to a lager one (small F number) they have been removed making for a much better shot.

•         Fg. 3 The depth of field in this picture is very narrow. It took a bit of time in making sure that the whole of the ball was sharp and nothing else.

When taking a picture I consider the 'out of focus' as important as the area to be sharp.

 

Sinkings in the Orkneys

German Fleet at Scapa flow

It is a grey day as a young lad stands near the cliff edge on Hay one of the Orkney islands. He looks out over Scapa flow that is crowded with ships. The German fleet has been interned. He has heard that the war is over and that is why they are all here at the Navy’s most northerly base and guard to the North Sea.

While the boy is sat a top the cliff eating a bread and dripping sandwich, his eyes are drawn to some flashing lights, it looks like all the ships are winking at each other, little does he know that this is the order from rear admiral Von Reuter to his commanders confirming orders to scuttle the fleet. He looks on day dreaming about what life may be like now that the war has ended. He suddenly notices that all the ships he can see are flying the Imperial German Ensign from their main masts. While he looks on there are lots of small boats moving between the ships, if only he had a telescope he would be able to see what is going on in more detail but he still hasn’t got enough pocket money saved.

Whaling boat stranded on Battle Cruiser Moltke

The German sailors had been preparing for the scuttling for some days by  drilling holes in the bulk heads to help the passage of water through the ships. Once the order was given sea cocks and flood valves were opened, internal water pipes were smashed and all water tight doors and portholes left open. It was not until midday that  the scuttling was noticed.  Friedrich der Grosse was seen listing heavily to starboard. What remained of British naval forces at Scapa flow navel base sprang into action, but they were limited in the force they could take since the leaving of the fleet the day before . It was not until twenty minuets after midday that Admiral Fremantle on manoeuvres with the fleet  received a message that the German fleet was sinking. He immediate turned round and steamed back at full speed to Orkney. He radioed ahead to order all available boats to try and stop as many ships sinking as possible. By the time Admiral Fremantle returned it was only the large battle ships that were still partly afloat. The last ship to sink was the battle-cruiser Hindenburg at five o'clock.

Battle cruiser Seydlitz

The young boy up on the cliff had lost all track of time it was getting late, he would be 'for it' by the time he got home, with a clip round the ear from his mum. He had resigned himself to it but had a great story to tell his friends when he got to school the next day. On his way home he wondered what those faint popping sounds were. The tragedy of those sounds were that nine Germans were killed and sixteen wounded when the British boarded their ships to stop the sinking's. 

Battleship Bayern listing heavily

I know you are probably thinking what has this got to do with photography. The funny thing is this was all sparked off by an article in Black and white Photography magazine about post cards. Which lead me to a box of  cards that was given to me by my Gran. In among them are a collection of twenty pictures of ships, of these fourteen show the sinking of the German fleet at scapa flow at the end of the Great War. The photographer who took these shots probably used 127 or 120 format film in a box Browne or fold out camera of the time.

For more information on the Sinking of the fleet.

Post cards from the Humber!

Recently I teamed up with my wifefor a bit of an experiment and road trip. I loaded the Olympus mju compact with a roll of eight years out of date colour film. The idea was to share the camera between us taking pictures as we went along. Once the roll was finished I took it in to be developed at snappy snaps. No special instructions were given. The results speak for themselves. What if the film had been blank? Notch it up to experience and move on. Wouldn't it have been a waste of time and money? No! we still have the memories of an afternoon well spent, plus we had the 'mystery' to look forward too!

 

Light meter.

The weather has been great this past week and not one to pass up such a rare opportunity I have moved my office to the end of the garden where it is shaded  by some silver birch trees. If it was not for the shade I would not be able to see the computer screen.

As you know from previous posts I have become quite smitten with my Zero 6x9 deluxe camera. It's lack of through the lens metering! Your right no lens, I have had to revert to using a hand held one. NO! I'm not going to take another camera with TTL with me. Why load myself down, believe it or not even with a tripod it is lighter than my standard kit. Besides I don't need the light readings to be that spot on especially when needing to account for reciprocity.

While writing this I'm joined by a baby starling. It looks like the one I saved from the jaws of the cat the other day. The bird seems happy for me to be here as he/she walks up to and around the chair I'm sitting in looking for local delicacies. It appears I'm the last thing it needs to worry about.

Two types of hand held light meter

I have two types of meter to choose from they are tried and trusted run of the mill units. The oldest one uses a selenium cell which is a type of photovoltaic / solar cell. When the front of the meter is exposed to the light it produces a small current which moves a needle that indicates how much light there is. This type of meter is batteryless but one of the down sides is in low light situation it requires a certain light level to read accurately.

The other light meter is a CdS unit or Cadmium Sulfide cell that has a greater low light sensitivity. This light meter works by regulating the energy in the battery rather than producing a current as in the former. With this type of meter it can suffer from drifting this is where the meter has been shown a bright light temporarily making it blind. The cell has a memory and can fool you into thinking the level of light has not changed. It is a good idea to let the meter read the scene for several seconds to make sure it has read it properly.

Note the starling casting a
critical eye over the
photographs.

Todays meters do not suffer from this they use silicon blue or gallium arsenide photocell coupled to a memory chip  so are unlikely to have a time lag in changing light conditions.

My light meters are general purpose, they read reflective light from a fairly large area of the subject which is about 30 degrees. They round this reading to an average of 18% ( a mid grey) no matter how dark or bright the scene is. This is where the zone system ( See Ansel Adams The Negative for more info) comes into its own or a system of your own to allow for it. I have my own method that works well with a little bit of intuition thrown in. Well! Most of the time.

Since writing this my CdS light meter has passed away. It will be missed.

Light striped prints

Another printing fault is light pollution known as fog. This is assuming it hasn't happened in the camera.

The dark line you see running up this picture
 it the result of light
getting to the light sensitive material. Fogging .

●         It Could be where stray light from a darkroom not properly blacked out has found its way to the light sensitive side of the the paper you're using.

●         Your safe light is too close to the enlarger and or the wrong colour.

●         It can also happen if your enlarger leaks light when being used.

●         Badly stored and out of date paper can also be fogged.

The causes of these faults, also point to ways of curing them. This post suggests a way of detecting light induced fog.

Zero pinhole camera Project double take.



Camera Zero 6x9 delux
FP4+ 120 format, 6x6 neg,
 developed in PMK Pyro no afterbath,
Printed on silver proof paper gloss
Developed in Moersch 6 blue tone.

My attitude when using the Zero camera has become very relaxed. My approach is to look at the scene, roughly point the camera at the subject, take a light reading, calculate the exposure and open the shutter for about the right amount of time. Once taken move on to the next one. I'm not sure if this is such a good thing as I'm making a number of double exposures, which have turned out well more from luck than design.

Camera Zero 6x9 delux,
FP4+ 120 format, 6x6 neg,
developed in PMK Pyro with afterbath
printed on silver proof paper matt
 developed in Ilford warm tone

This has led to project double take but lets be honest basing an idea on a set of lucky mistakes does not bode well for the results. But then history is littered  with stumbled upon ideas that have gone well. With this in mind I'm going to carry on with the blindfold method of not winding on. I could be more controlled by making single shots and then combining the negatives in the enlarger to produce a double exposure but  this may take away the element of surprise and randomness to the results. With that said there needs to be some planning to the picture taking, so I'm going to use a location I know quite well in order to make the combination of double exposures easier to plan cutting down time looking for shots. It will be hit and miss anyway with this approach but hopefully not so many misses. The first roll is going to be a bit of an experiment so I'm not expecting many good printable photographs. But in this context what is going to be a good picture I think it will boil down to how well the combinations work together; once the first film is developed I'll be able to refine my method.

I'm setting the zero 6x9 deluxe to 6x6 neg size, loading FP4+ which will be developed in PMK Pyro using my revised method of inverting with an after-bath. I may not continue the bath for subsequent rolls if the photos look to soft. And so the project begins.

FP4+ developed in PMK Pyro method update

Zero camera, FP4+ developed
in PMK Pyro

The first permanent change is to go from two inversions every twenty seconds to one every fifteen seconds which is a reduction of two per minute. When I did this I wasn't sure if this would make the density of the negative less, as it turns out it has increased it, making for better toned prints. My conclusion is by decreasing the time between each inversion the developer in contact with the film surface is fresher for longer hence the increase in density. 

Zero Camera  FP4+ developed in PMK Pyro
Pelham bridge road Lincoln

I have also used an after-bath  (only with 120 FP4+) which does change the colour of the film base and seems to make them easier to print and at a softer grade. It has been suggested that the bath can reduce the sharpness of the negatives. Is this reduction noticeable? That's an answer you will have to find for yourselves as  I have only been using it so far with the film that's been exposed with the Zero pinhole camera, which is not known for it's ultra-sharp negative production. I will not be introducing it across the range of other makes of film I develop in PMK. I'm happy with the fine toned negatives it produces and see no reason to add the bath. 

Zero Camera FP4+ developed in PMK Pyro

Those of us who like to go against the mainstream will use it for creative or pictorial purposes but you need to be sure that the grain is sharp across the negative, it may add that extra something you are looking for to the final photograph.









Related posts:

PMK Pyro after-bath
PMK Pyro developer part B
PMK Pyro working solution

Colour film well out of date.

The friend that gave me the out of date colour film did so in part for the removal of a partly exposed roll of film from her Dads camera a week or so earlier. She was not sure if it had become stuck or not.

The camera was an Olympus OM707. The battery carrier lid was broken and held in place with sticky tape and not working. The batteries were flat, so I tried some new ones but there was still no life which is a shame as it was in good order otherwise and had been in regular use up until eight years earlier. I had not come across this camera before so was not sure if I would be able to unwind the film manually. I found a re-wind button on the base plate, pressed it and went into the darkroom and opened the back. I took the cassette out first then gently pulled on the film and to my surprise it started to unwind. Once the film was fully removed I wound it back into the cassette.

A couple of weeks later I found out that the film had been developed and to her surprise it had produced some excellent results. It just goes to show even with a partly exposed colour film that has been sitting in a camera for eight years and extremely out of date, it can still produce some unexpectedly good results!

Yes I will admit that it is a risk when using film well outside the bbd; even more so with colour but I do not believe, like some, that you should only use this film with a so called toy camera as it suggests that if it goes wrong then it's “OK!” You just have to look at the lomograph site to see some excellent photographs. Personally you should have the courage of your conviction, use the best camera you can lay your hands on and embrace the results no matter what!

The colour pictures attached to this post were taken on my F5 on Agfa vista neg film that could have been out of date by fifteen years or so and kept in “iffy” conditions. So I walked into Lincoln on a warm sunny day with this film     and an open mind.  If I had listened to the doom and gloom merchants it was likely a waste of time! As it happens it was a good result even though I would have liked some colour shift to the pictures.

Related Posts:

Film Storage



Agfa APX sorting out the test strips for development..

With the test film exposed it's finding the time to process the strips. I have enough equipment that allows me to develop them one after the other. I will need at least a morning for cutting the film into lengths, setting out the chemicals and kit, develop,stop, fix and wash. Not forgetting that PMK Pyro developer can only be mixed in each case just before use.

The film was inserted into a Nikon F5 with automatic load which is a bit of a pain. If it was manual loading you would be able to mark the film before you shut the back and wind on to the first frame. I know from experience that the F5 has about 150 mm (6") lead before the first frame which would be an extra two shot if it was manually loaded making Agfa's APX a forty picture film. Each test strip is five frames long with two blanks to allow for error when cutting it to lengths of 235 mm (9").

This is the first time I have had to use my new darkroom in full black-out as I usually use a changing bag to load film into the process tank. I'm pleased to say there were no light leaks. So I could see where to cut the film in the dark I laid a rule on the work top with two bits of tape attached to it at 150 mm and 235 mm respectively. All I needed to do was pull the film from the cassette and cut to length at the tape marks. It surprised me how well this method worked. The remaining exposed film I wound back into the film holder to be processed later when I know the development time is right.

My working method for producing the test negatives:

• Add Part A of the developer mix to 250 mls of filtered water (tap water will do) and wait till the temperature reads 21 degrees C.
• Pre-soak for 1 minute. I have found that PMK Pyro developer is prone to air bells/bubbles forming on the film that are not always dislodged by taping the tank on the work top.
• Add part B of the developer and make up to 300 mls in doing this it will bring the temperature down to its working level of 20 C. stir and pour into the processing tank.
• Invert continuously for the first minute and tap tank on work top at the end.
• Invert once ever 15 seconds. For 6.5 minutes.
• Stop, fix and wash as normal.
• Repeat the above twice more with developing times of 26 and 13 minutes respectively.

If all goes well you will get a set of beautifully toned negatives.


Related posts:

Test results

The story behind the Winter Picnic Photograph.

It was round about this time last year (November/December 2010) that the UK was in the grip of the worst cold spell for as it turns out a hundred years. The country may have just missed coming to a standstill but it stopped me in my tracks literally, as I couldn't get the truck off the drive. The ice was a solid two inches thick not allowing for any grip!

The snow brought a brand new look to the area that I had not seen before, so I thought I would go out and take some photographs of this fresh, clean new wonderland of soft edges. Armed with my Bronica SQAi 120 format camera loaded with FP4 film I trudged gingerly off into the countryside.

Picnic

I was quite surprised to find there we a lot of people out and about with the same idea, walking the dog, playing and enjoying their enforced day off work. As I strolled further afield the numbers thinned until I was alone enjoying the crisp white land the snow had laid out for me to photograph; so engrossed with the scenes before me I forgot how bitterly cold it was until my throbbing freezing fingers sent SOS messages to my brain and brought me back to reality -“Shhahhhoi!!! Its cold.!” Pulling my gloves on the best I could I made off in a hurry to warm up.

Briskly walking up a path by one of the lakes the path turns a corner at the top where there is a bench and from a distance it looks like someone is sitting there! As I got closer I could see it was two people! -”they must be mad!- and it looks like they are having a picnic!” As I got closer I could see steam from their cups as they ate their mince pies! An idea for this picture was forming as I approach them to ask if they would mind being in the photograph. They did not mind, so I walked back down the track a bit, set up the camera on the mono pod, took a light reading and pressed the shutter. You're right! I only used one frame, no back up or bracketing, the view that came to mind is the one I took. After the shot was taken I walked back and chatted for a while. Apparently they don't let a little bad weather get in the way of them coming to their favourite spot! I wish them the best of the season and moved on. Not so mad after all! I wish I had thought to bring a hot drink with me!

I am pleased to say that Picnic was one of the Pictures chosen for this years Film and darkroom users Year Book. Which can be obtained from Blurb.

FADU year books

Fox Talbot a short history to his discovery

William Henry Fox Talbot born 1800 died 1877.

Fox Talbot was considered a polymath some of his interests and qualifications included Philosophy, Mathematics, Physics, Egyptology, Philology, Syrian, Chaldean cuneiform text and photography. Fox Talbot carried out his experiments at the family home which was Laycock Abbey Wiltshire.

Fox Talbot's sketch of Lake Como
using camera obscura. 

The idea of photography came to Fox Talbot while he was on a family holiday at lake Como Italy. He was using a camera obscura and Lucida to aid his fruitless attempts to sketch the lake ( Pictured right is a sketch drawn by Fox Talbot of lake Como using a camera obscura in October 1833) He put these devices to one side and thought back to a procedure he had used with a camera obscura that put an object on to a piece of paper attached to the back plate; this image did not last long it disappeared like a ghost in to the night. It was at this time that he thought it would be nice to fix the image permanently to the paper.

Fox Talbot started looking in earnest for a way to fix an image to paper in 1834; he would first have to find a paper that could be submerged in a solution of salt and silver nitrate without it disintegrating. The result of combining these two chemicals would make silver nitrate a light-sensitive salt that was not affected by the moisture in the paper. He now had a paper that could be used for photogenic drawing. The first pictures he produced were of leaves and lace. He placed these on a sheet of light-sensitive paper and put a sheet of glass over them, then left them out in the sun.

Fox Talbot used many different types of camera to produce his pictures. There we a couple of cameras or boxes that only measured two or three inches which Fox Talbot left around the grounds of Laycock Abby in different places with light-sensitive paper in for about an hour at a time. They were nick named mouse traps by the family. His early cameras would use telescope or microscope lenses.

This is the picture of the famous Oriel window in the south gallery of Laycock Abby. It is the earliest surviving paper negative dated 1835. when originally taken you could count the two hundred tiny pieces of glass that made up the window with the help of a lens. This is a replica of the camera he used to take the Oriel window shot.

By chance in 1840 Fox Talbot discovered when re-sensitizing some paper that the image had appeared; this became known as the latent image. Before this time he was having trouble with the sensitivity of the papers. Although he had been able to fix the images by using a strong salt solution of potassium iodine of hypo to stop the images fading. This new discovery was a major break through that meant exposures could be achieved in one to three minutes instead of half hour or more. The year after Fox Talbot discovered how to make his photogenic drawing process more sensitive to light by adding Gallic acid to the process. He also found that a further treatment of Gallic acid and silver nitrate would bring the latent image out. It was time he changed the name of the process to Calotype (from the Greek "Kalos" meaning beautiful) the Calotype was a negative/positive process introduced in 1841. Strictly speaking Calotype should have referred to the Positive part of the process.

The advantages of the calotypes were unlimited prints from one negative, retouching could be done to the negative or print, the paper print was easier to see and could be handled with out damage and had warmer tones.

Some of the draw back of this process were that prints tended to fade; fibers in the paper reduced the quality of the print, making the focus soft but some people found this an advantage. Materials were less sensitive to light needing longer exposure.

For more information:

www.foxtalbot.dmu.ac.uk

 
en.wikipedia.org/wiki/Fox_Talbot

 
www.photography.about.com

 
www.masters-of-photography.com

 
www.r-cube.co.uk/fox-talbot