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Showing posts with label printing. Show all posts
Showing posts with label printing. Show all posts

Sunday 19 October 2014

The Monochrome print and the colour enlarger.

Many years ago I was in a position to purchase a medium format film camera. This led to a complication in the darkroom in that my then current enlarger was for only 35mm film. An extra expense I had not budgeted for! At that time multigrade headed enlargers were quite expensive second hand and a bit thin on the ground. By chance 'the other half' noticed an ad in the local paper, it was for a medium format colour enlarger that came with some other bits to do with colour printing. I had not considered that a colour enlarger maybe just as good. The person I spoke to did not know what size negatives it took. So going to have a look was a gamble but then I only had to go round the corner. To my surprise it was all in mint condition and the enlarger would deal with negative sizes up to 6 x 7 - I was hooked! Apparently the seller had only used it a few times and decided to go digital. We struck a deal and the rest as they say is history.

Once the enlarger was home I dismantled it and gave it a good clean and checked it was all in good working order, not that I expected to find a problem. The big surprise was how dusty the inside was. It was gently cleaned with a soft damp cloth and wiped dry so as not to leave any residue marks. 


The next thing I needed to know was how to set the filters values for use with black and white multigrade papers. I chatted to a friend who pointed me in the right direction. After a bit of digging in the library I came up with a number of values for different makes of enlarger my one included. I thought the values should all be the same. But have discovered that the values are a suggested starting point. I have a set of multigrade filters that I used with my other enlarger at least now I will not have to check them for dust.

 There is a lot of speculation on the subject of using colour enlargers with multigrade papers. They split into two camps - the purists that say the multigrade filters only give the papers true contrast and people like me who check things out for themselves. I am at an advantage in that I have used both methods. Personally I have not noticed a difference but then I have not done a like for like comparison. Would I do one? The only way I can answer this is to say If I was to become dissatisfied with my results I may check to see if there was a difference.
 
The following are the values for Variable contrast papers for different makes of enlarger. The values are for the yellow and magenta filters the Cyan should be set to zero at all times.

Ilford settings

1
2
3
4
Grade
Y
M
Y
M
Y
M
Y
M
0
150
25
92
16
75
12
110
16
0.5
110
33
74
22
55
16
73
22
1
85
42
56
28
42
21
57
28
1.5
70
55
46
37
35
27
46
36
2
55
70
36
46
27
35
36
46
2.5
42
80
28
53
21
40
28
53
3
30
90
26
60
15
45
20
60
3.5
18
112
12
75
9
56
12
74
4
6
135
4
90
3
67
4
90
4.5
0
195
0
130
0
97
0
130
5
0
200
0
130
0
97
0
130

The numbered columns represent different makes of enlarger
  1. Dunco, Devere, Chomega, Beseler, Jobo, Kaiser, Omega, Paterson, LPL,Kodak.
  2. Durst.
  3. Meopta
  4. Leitz
  5. kodak
  6. Durst

Kodak
Grade
5
6

Y
M
Y
M
0
130
0
130
0
1
75
10
65
15
2
50
20
40
35
3
30
35
20
60
4
10
100
10
100
5
0
200
0
180

It has been many many years since I obtained my enlarger and the resulting prints I have produced with it I have been pleased with, so much so that I have not tested the accuracy of the enlargers filters with Ilfords set. If it ain’t broke why try to fix it!
Since writing this ilford have introduced multigrade five making the above tables relevant to multigrade 4 only.  when purchasing paper you should always check the manufactures tables that come with the paper for the latest filter values.



Print 1
Print 2
Print 4
Print 5




Technical data:


  1. 35mm film, Agfa apx, iso 100, developed in ID11, Printed on Ilford multigrade RC gloss. developed in multigrade.
  2. 120 format FP4+ iso 125  , 6x6 negative, developed in ID11,  Printed on Ilford multigrade RC gloss. developed in multigrade
  3.  120 format FP4+ iso 125, 6x6 neg, developed in ID11, Printed on Ilford multigrade RC gloss. developed in multigrade.
  4. 120 format fomapan 100, iso 100, 6x6 neg, ID11, Printed on Ilford FB gloss natural tone, developed in multigrade.


Friday 19 September 2014

Mature paper developer


Mature multigrade developer with FB paper.
Notice that it has a very subtle warmth to it.
I happened to mention to a group of dark artists that I use mature developer when printing my photographs. I was a little taken aback in that they did not understand what I was saying and possibly a number of you reading this will not either. Basically it means that I cut fresh developer with old and exhausted developer from other printing sessions. Not always from the same manufacturer. It is something I have done for years and have not given a second thought to.

The technical bit:

Starting with the papers light sensitive coating, they can be made from three materials Silver bromide, silver chloride and silver iodide. These are combined to make three types of coating chloride,bromide and chlorobromide. A number of other chemicals are also added to help things along. The way in which these chemicals are mixed together affects how the final print looks. Chloride rich papers are slower and warmer in tone. Where bromide predominates it leads to faster acting and colder toned papers. As a common rule the material named first has the most influence on the way the paper reacts. Bromide papers are the most light sensitive producing neutral or cold blue black tones.
Fresh multigrade developer with FB paper.
Although the picture is of a cold subject the tone
of the scene is cold as well.

The most commonly mixed materials found today are chlorobromide papers. They are a compromise between speed and colour. By adjusting the percentages of these chemicals the manufacturer can alter the tone from warm to cold and vary how sensitive to light they are. I have found that the new Kentmere RC papers to be very sensitive to light producing a cold look to the print. It's quick reaction to the developer means that full development of the picture can be achieved in less than thirty seconds when developed with fresh Ilford multigrade. Chlorobromide papers tend to tone better than Bromide. If you are going to use gold toner then a chloride rich paper is the better than bromide rich paper as it hardly responds.

This is was printed on Kentmere RC paper with
 fresh developer. It was fully developed in less than
thirty seconds.


Although the tone and tint of black and white papers are subtle it has a great affect on the viewers response. Neutral and cold tones tend to create a distance emotionally, a sense of looking in from the outside. While warm looking images draw the viewer in engaging them emotionally. There is a tendency to use these different tones for certain subjects, cold and neutral tones with landscapes, abstracts and modern architecture. With warm tones being used with subjects like portraits, still life and nostalgic pictures like churches and old barns. We maybe used to seeing them used in this way but there are no rules but those you make for yourself and even then they should not be set in stone. By learning to manipulate and control the tone of the paper you are printing with, opens up new ways of engaging the viewer in your vision of the world.


Printed on warmtone  FB paper using
a sepia tone developer. Again the warmth is
very subtle. when compared to the picture
above.
When talking about tone and colour of monochrome papers it is important to understand there is a difference between tone and tint. The tone of a paper is influenced by how much chloride or bromide there is in the coating of the paper. More chloride means slower warmer pictures.

Paper bases come in different colours/ tints such as off white, cream and variations on the theme. At one time warm tone papers could be made on a brilliant white base but these days the base paper has a tint to it, this allows the manufacturer to reduce the amount of chloride in the mix increasing the speed of the paper and still call it warmtone even though it is the tint we see. Tints are most noticeable in the high lights and tones in the shadows. Because the colour shifts are so subtle an untrained eye may not notice the difference until it is pointed out to them.


This is the most important bit when it comes to manipulating the tone of a paper. The main thing film and paper have in common is grain it maybe invisible to the eye but the bigger it is the blacker it appears. When the paper is placed in the developer the grain increases in size as it grows so it changes in colour. From a yellow to begin with it turns reddish, then brown and finally black which is the point of full development.

Printed on  Ilford multigrade FB paper.
 It has been developed in an almost exhausted developer
giving it a pinkish look.
This is valuable knowledge when it comes to changing the tone of a print for example: If you over expose your print more than the exposure your test strip suggests and then under develop the print by say a quarter of your usual development time this will help to increase the warmth of your picture. If you combine a warmtone developer and paper it will greatly increase the effect.

Now to the technical bit behind the mature developer. What happens; as the developer starts to exhaust, so it has trouble fully reducing the silver halides in the emulsion. This means the developer cannot turn the silver completely black therefore it leaves it in the warmer less processed state. You can induce this state by adding fresh developer to an old/ exhausted one which will leave your prints with a wonderful but subtle warmth. The old, new combination should only be used up to a dilution of one to one. Beyond this can lead to sudden exhaustion of the developer.







Saturday 19 July 2014

RO9 Rodinal film Develper


Having used up all the ID11 on the four film project and a backlog of exposed film building up, I thought it was about time I break out 'my something for the weekend' developer. I have always kept a backup developer for those occasions when I get caught out. This time I reached for a small bottle of RO9/ Rodinal. This little bottle has been on the shelf for years and in that time it has slowly turned to a rich red brown colour. This single shot developers keeping qualities are legendary. Silverprint has a forty year old bottle that they use from time to time! It still produces good quality negatives, so my 'youngster' should have no problems.

RO9/ Rodinal is not classed as a fine grain developer. It is famous for it's contrast control and flexibility. It's high acutance produces very sharp looking negatives a bit like sharpening a digital file in Photoshop.
It's character to a certain extent is governed by it's dilution.
For example:
  • 1+10 will develop ortho film.
  • 1+25 produces high contrast negatives and the most obvious grain.
  • 1+50 Is the standard dilution producing crisp, normal contrast negatives, with slightly more grain than a fine grain developer.
  • 1+75 and 1+100 will render high contrast negatives as normal.
  • 1+300 can be used with document type films.


This is another developer I have not really used before so when I picked a Fomapan 100 ISO 100 to try it out on there is a little first use nerves! - How will the negatives look? How much is a little more grain than a fine grain developer? Is the time suggested going to produce well toned negatives? All questions that cannot be properly answered until the film has been fixed. My mantra is “keep it simple” and chose the standard dilution 1+50 as this comes close to the development time I use for ID11, which means I can compare these neg's against the ID11 negatives.

I used my long standing agitation method, although on the bottle it gives a different one. Agitate for the first thirty seconds and then tilt the tank at thirty second intervals.


I have used this developer with FP4+,Fomapan 100 and the Rollei 400s and again I'm having trouble with the latter. The other two have presented nicely toned negatives that have been easy to print. They are slightly more grainy than the ID11 negatives I am use to. But you would not think so when you look at the prints, I'm hard pressed to see a difference when comparing them side by side.

The pictures that appear with this article have been scanned from 9 x 12 prints produced on Kentmere variable contrast paper RC. I have found that grade two works better with these negatives than my usual grade three. This maybe down to its contrast controlling attributes. I have also used a couple of negative with the split grade method and again no appreciable difference. I do all my test prints on RC papers and then do my final prints on FB papers. Here again there has been no sign’s of increased grain.

All the pictures were developed in a mature Ilford multigrade developer - by mature I mean at least a month old, that has been replenished once or twice. I find that the prints take on a warmer tone than those first produced in the developer when fresh. It also takes longer for the first signs of the print to appear when fresh, about ten or so seconds and as it matures twenty seconds or so. This is not a method for the faint hearted as it can deplete very quickly in a matter of one print to the next. I have been caught out and ended up with a print that does not fully develop.


Overall I am very pleased with the negatives RO 9 presents. Yes they are more grainy but that does not translate to the final print. While I was looking into the use of RO9 Rodinal I came across a gentleman that has indicated that the original Rodinal could be used as a print developer and it was the exception to the rule in this respect. Does anyone know differently? 

Monday 10 March 2014

A mistake comes good

Developed normally
In a recent chat I had with another photographer, there was a lamenting the fact that he had not noticed a problem with his new pinhole camera; well not the camera but a bit of kit he was using with it. He is not the only one not to notice the little tell tail signs that things are not going well. I had the same sort of thing with the lith 200 process I was trying out for the first time. It was not until I started to use different makes of paper that the fault struck me. Up to that point I thought it was part of the process. It turned out that the box of Kentmere paper had been light contaminated (fogged),but when I could not remember.  At this realization two things crossed my mind, what a waste of a box of paper and dam! it is not a peculiarity of the process.

lith 200 Kentmere paper
I changed to a different paper and continued to produce prints. Using the
negatives I had selected for the trial with the lith 200. While I was doing this I had the idea that maybe the fogged paper could be used to creative affect. I chose some of the negs that may lend themselves to this and processed them accordingly. As the first result appeared in the developer, I started to question this creative wisdom as it looked rubbish, but then my perception changed when the photograph of the bottles on the window sill appeared. It did not look out of place, in fact it added to it a sort of early twentieth century feel. Maybe my idea wasn't such a bad one after all!.


lith 200 Forma paper
What I'm getting at is just because it has gone wrong there is no need to throw the baby out with the water so to speak! With a little lateral thinking creatively you can turn things round. Some of you may think I'm talking a load of rubbish ( I'm being polite) but it is surprising how often a mistake can come good.
lith 200 Kentmere paper




Monday 10 February 2014

Easy Lith 200 Results.

This is my follow on post explaining what happened and how it was done. Not everything went according to plan, but more about that later.

Being in a fortunate position of owning a second slot processor I decided to set this at 26 degrees for the lith developer. I did not add stop or fix to the other slots but continued to use what was already available in the other slotty, keeping the temperature to 20 degrees. It is just as well I did as one of the papers emulsion became very soft.

I chose high contrast negatives that I had already printed. I looked back through my notes on how long each was exposed for and added one and half times more exposure to see how things worked. I chose to follow the instructions when it came to diluting part A and B at 2X 1+25+1000 mls water. (20 mls of each 40 mls in total in 1000 mls of water). The paper I chose to start with was Kentmere RC because it was the paper originally used with these negatives. All the prints were exposed to white light, no grades were set. I had no idea how they would turn out or what sort of tone would be produced. I used two other varitone RC papers to see which produced the best results with this mix of A and B.

Kentmere paper
This is the original Kentmere print exposed at grade zero and developed as normal.

Kentmere paper
This is the first print out of the easy lith on Kentmere paper. It took over three minutes for it to reach full development. A very faint out line of the picture started to show about 30-40 seconds in. It was difficult to see whether the print had toned or not with the red light on.

Foma 131 paper
Second print was on Foma 131 varitone. This took a full twelve minutes to develop fully and is what I had in mind as a lith look.

Ilford paper
Third print was on Ilford multigrade paper, I pulled the paper early because I thought it may go completely black.

Conclusions:

Not knowing what to expect from this process makes it difficult to be to critical with the results. One of my main mistakes was to treat this like a normal developer, I should have mixed the two parts separately so I could vary the strengths of each part to get a look that was in my opinion more lith like, this may have lead me to make changes to the amount of over exposure as well. The problem I think in these early stages of getting to grips with a new process such as this is there are a lot of variables to take into account. With more practice I suspect I will arrive at something more my taste.

A side affect of using the Lith process has shown up a weakness in what I considered a well vented darkroom. This is the first time I experienced a build up of fumes. Some updating needs to be carried out if I wish to continue printing using lith chemicals. After a bit of thought I feel it should be upgraded regardless!

Over all I am pleased with the outcome, for a first attempt. Others may not, but I would prefer to get as many of the mistakes out of the way now so I can concentrate on producing finer prints in the future.

Link back to first post easy lith 200

Friday 31 January 2014

Easy lith 200 try out.

Easy lith 200
For the best part of a year I have been looking at a couple of bottles of Moesch easy Lith 200. It is there by mistake, having turned up in an order I placed and could not be bothered to send it back. After looking at the instructions again I decided to give it a go. How difficult could it be, after all it does say easy lith!? It is time to put 'easy' to the test.

What the instructions say:

The lith developer comes in two bottles marked A and B. the former has Hydrochinon and the latter Potassium Carbonate.

A and B can be diluted from 1+15 to 1+50 or any combination of the two. For example 1+25 = 40 ml of developer to 1000 ml of water. (20 ml A +20 ml B +1000 ml of water)

You should over expose your prints by 1 to 4 stops. The amount of over exposure and the strength of the developer influences the interaction between the two, e.g. with a small over exposure you should use a stronger developer of say 1 to 15 dilution, with a larger over exposure you should use a weaker developer of say 1 to 50 dilution.

Reaction when you add part A and B together
The image printed is dependent on the paper and exposure used i.e. lots of light plus weaker developer equals longer development time and greater colour.

If you are using variable contrast papers (VC) you should use white light as contrast is controlled by a combination of exposure and development time.

Short exposure equals higher contrast, underdeveloped middle tones and minimal colour.
Long exposure equals softer and colourful high lights.

It does not matter what combination of exposure or dilution you use it can take between four to twelve minutes for the image to appear whether RC or FB paper is being used. When in the developer it is recommended that the print is agitated continuously and that the emulsion side should not come into contact with the surface of the tray as it will damage it.

The water added in this case was at 26 degrees.
as you can see the milkiness disappears
The development time will extend from print to print as oxidation and bi products build up this can be compensated for by adding fresh developer to regenerate the working solution.

You can vary the relationship between part A and B. Different affects will be achieved by doing this. More part A equals more colour and harder prints but runs out of steam more quickly. More part B equals a softer print that appears more quickly relatively speaking and will produce more prints before it is exhausted.

It is suggested that by increasing the temperature of the developer to around 26 to 28 degrees centigrade it will reduce development times by 30 to 40% but by doing this it will soften the gelatin making it easier to damage.

The instructions above are not verbatim as they are translated from German but contain all the most important bits.

Some thing’s to think about before you start:

Oxidized lith developer after 24 hours
I would suggest where possible that if you are going to use the developer at the increased temperature of 26 degrees +, that it is done separately to the stop and fix which would normally be used at 20 degrees. This is really aimed at those of us who mainly use a slot processor for printing. By doing this you decrease the amount of fumes given off making the air more breathable. It also allows you to cool down the paper when it is moved to the stop therefore hardening the gelatin layer decreasing it's susceptibility to damage as you move it from bath to bath.

Collapsible bottle.
I added part A and B together when I mixed it up for the first time which I think was a mistake, it would be a better idea to dilute A and B separately as one exhausts more quickly than the other. The instructions do not state either way as to mixing the pair together.

It also states that the developer oxidizes quickly when used in a tray and that you should only mix enough for the session and when finished throw it all away. I found that if you pour the unused developer into collapsible bottles it will stay fresh for at least 48 hours. A slot processor slows the oxidation down but not to the extent that it will keep over night.


Because this post is getting a bit long my results will be posted separately. 

Results link



Monday 20 January 2014

Ilfords new darkroom paper.

The old Multigrade 4 FB.
Ilford have launched an upgrade to its popular Multigrade 4 FB darkroom papers called Multigrade FB classic suggesting that this is the best light sensitive paper they have produced so far. If you judge it on sales alone and the fact it has sold out you maybe right or they could have simply under estimated it's popularity. It comes in gloss and matt surfaces offering greater sharpness, shorter development times and improved Max D – could this mean less time in the wash? Available at all the usual sizes. The classic paper has a white base tint, neutral image colour, good mid tone range and deep blacks. It has also been made more sensitive to traditional toning techniques but then I didn't find the original that difficult, even with toning developers. As part of the changes a cool tone FB paper has been introduced to complement the warm tone FB papers. This has crisp whites and nicely separated midtones. One of the surprising things about this paper is that Ilford has kept the price of the paper at multigrade 4 FB prices so far.

Technical sheets from Ilford:



Friday 6 December 2013

Split grade printing with High contrast negatives.

Very high contrast grade 0
A recently developed set of negatives have shown themselves to be very contrasty even by my standards. During the summer I was on an early morning shoot, when I came across these scenes. They were not the easiest pictures to meter, there was a six stop difference between the light areas and the shadows in some cases. Two things drew me to them: the  way the shadows of the leaves danced on the walls in the gentle breeze and the other was a brief thought that they would be a challenge to split grade print.  



Soft grade 0
It has been suggested that split grade printing works better when the contrast stakes are raised. In these cases they maybe unprintable. The pictures were made using 120 format FP4+ developed in ID11 for 14 mins I know this is longer than what is recommended but I have found I have a tendency to under expose when using medium format cameras.

I used Ilford multigrade developer and RC paper. I tend to use RC papers in the initial stages or until I'm happy that the picture warrants printing on FB paper.


With grade 5 added
I started the grade zero test print for the Gate but it became clear while I was doing the timed segments that I may not need a grade five test because  the contrast was very high even for zero. I chose sixteen seconds for the gate picture to illustrate the degree of contrast this negative has. The window shutter picture also proved to be overly contrasty as well. I was quite happy with the results until I did a second print with the grade five added which now makes the first print look soft. It just goes to show how things change when you start to explore the subject at different settings. None of the prints have been manipulated by dodging or burning in which could class them as the perfect prints?

Sunday 17 November 2013

Split grade printing the next step dodging and burning .

Top grade Zero
Bottom grade five
The use of split grade printing has changed the way I work in the darkroom. Yes it takes a little bit longer having to produce two test prints, but in the long run it cuts down the amount of dodging and burning needed to achieve a finely toned photograph. I have also noticed a luminosity that has been missing from my graded prints. It has also shown me that it is an advantage and not a waste of paper to make full or half page test strips. You get a better understanding of how much more light is needed for the high lights, so you can build this into the first full print of the scene. This saves time and paper having to reprint it again and again to get it right.

I find that my more contrasty negatives are more easily printed using the split grade method, giving more control of not just the tones but also the contrast. Burning or dodging my prints has been reduced considerably, allowing me to add more detail at the extremes. 

So at what point should you be burning in or dodging? The grade zero exposure being the most important one is also the stage at which you should be making your adjustments. If possible you should be including them for the grade five test strip. By doing this you will have a better understanding of how the contrast affects the corrections and make allowances for them in the final print.

Some of you reading this will be thinking it's all to complicated and not for you, Dodging and burning is about having confidence in your ability, once you have done it and seen how it changes your pictures for the better, you will be wanting to do it every time. I enjoy this part of the picture making process, it always reminds me of a composer on the rostrum encouraging certain section of the orchestra to bring out his interpretation. Only you are using light to enhance what you had in your minds eye.

Burning in graduation times
OK I'm going to keep this simple just to give you the idea of what to do. I have only used grades 0 and 5 but in certain cases other grades maybe more appropriate but that is for another time.

Producing the prints:

I produced a soft toned (grade 0) test print at five second intervals. When it was dry I compared the segments to determine which would give the best overall toned exposure and how much extra light would be needed for the sky. I chose seven seconds for the whole picture, this allowed the street scene shadow to keep its detail without it blocking out. A further twenty one seconds would be added to the sky. With the main exposure done the sky was burned in. For this I used two black pieces of card held together to form a V shape. The trick with dodging (holding back the light) or burning (adding light) is to keep the mask moving otherwise a hard line will be left. I gently moved the card backwards and forwards lingering in places to give the sky a graduated look. The times on the picture are there as a guide.

Now I placed some black card over the masking frame to protect the picture from any stray light, while I adjust the enlarger to grade 5 for the contrast exposure. The first segment was covered and then exposed at two second intervals there after. Again when dry I chose 3 seconds.

Final print
With the all the times combined a full print was made. There are some short comings; firstly the build on the left could do with a bit more burning in to bring out the texture of the wall and if I wanted to be really picky the sky could do with masking in more precisely which would mean cutting a mask that mirrored the buildings outline.
 
The idea was to keep it simple and to show what could be achieved with the most rudimentary of masking off.