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Showing posts with label fast. Show all posts
Showing posts with label fast. Show all posts

Monday, 1 November 2021

Fast film for macro will Bergger cut it?

I'm writing this from the darkroom as I process the second roll of Bergger Pancro 400. It is being developed in Kodak HC 110 for 9 minutes. I am not sure how it’s going to turn out as I forgot to soak it for a minute in clean water. I knew something was amiss. It is becoming a joke - nearly every film I have processed this year has had a fault in one way or another. I will be pleased to get back to the mundane predictability of old, in more ways than one. 


Now, with the film hanging up to dry, I can get back to what I wanted to write. I’m pleased to say that the initial look over the negatives is good, but I will only know for sure once I start printing.


Lock down has allowed me to slow down and consider what I should do. While I mulled things over, I did a bit of online research into macro photography with a bellows. It became clear that it would be best to use a fast film because of the drop off in light reaching the film plane. The problem is that I have no 400 ISO film in 120. During my research I came across references to a film called Bergger. It did not take long, the screen was swamped with opinions on this film. I scratched the surface to see what was said and the pictures it produced, but was disappointed to find that most of it was scanned negative. One video I watched stated the negatives were flat. I am pleased to say I carried on regardless and the results I have hanging up to dry, show otherwise.





As you may have already gathered, the film needs to be soaked for a minute before the developer goes in. When you pour the water out, it has a very slight colour to it. Stop bath is as normal for those who use it, but you must fix the film for six minutes or longer, depending on how old your fix is. Agitation for the developer is for the first 30 seconds (twelve inversions) and then for 10 seconds every minute (four inversions). If you tumble your tank instead of twiddling, when you open the top to pour away the developer there will be bubbles in the top, but so far no adverse effects on the look of the negatives.


I have long held the view that one favourite film developer at a certain dilution should not be a catch all for all makes of film. This approach is the enemy of creativity and creates missed opportunities. Manufacturers go to great lengths to produce developers which bring out the best qualities of their film. As I discovered, Bergger is no different - only in this case, their film has a twin layer of emulsion, giving it full light sensitivity - hence the name Pancro, which would suggest a look all of its own. A comparison of their developer could be on the cards?


I chose to use HC 110 to develop the film. It could easily have been Rodinal or one of the half dozen others I have on the shelf, but had in mind the fine grain qualities of HC 110. Fast films are not known for their fine grain, unless it is a T grain. I should add that the developer you choose has a big influence on size of grain and the character of the negative and should, therefore, be given due consideration.

 When doing something like this for the first time, it is a leap of faith that all information about the development is correct. I have found that the time suggested for HC 110 produces a negative that looks a little on the thin side for me. It has shown itself in the darkroom with shorter than my usual exposure times. I may, therefore, increase the development time, but for now I’m going to let it stand until I have processed a few more rolls.

I have exposed a number of rolls of Pancro 400 at box speed. Most of it in high contrast conditions. In some cases, with the lens closed down to F.32 at 500 th of a second, it has managed to capture a wide range of detail from darkest to brightest. All waiting for you to utilize when exposing it to your chosen paper. I have found that printing these negatives to be some of the easiest. The whites are brilliant and detailed to a degree I have not noticed before with other film. The blacks are rich and pure, but can also be very detailed. 

 One note of caution is that it is quite easy to overexpose the paper due to the extra tone and crisp detail. I have discovered that I am trying to have it all - resulting in overly dark, and sometimes muddy, photos. Less is more, as they say, which has led to some wonderful photographs which are a joy to behold.



You should give Bergger Pancro 400 a go, if you have not already done so, and print in the darkroom - scanning does not do it justice.


Technical data:

Bronica SQAi with TTLM, bellows fitted and extension tube, lens 150 mm.

Film Bergger Pancro 400 at box speed

Photographs exposed to Kentmere 9.5 x 12 VC select paper. Developed in ilford multigrade.

Images were made using a digital camera.












Thursday, 22 December 2011

Spun dry?


This is the fastest way you can dry your negatives. I had forgotten about this method until recently. Why? because it is the first time I have had access to a spinner. I recollect that there was/is opposition from other photographers in the use of the centrifuge method but cannot recall for what reasons.

The process is quite simple, you leave the film in the spiral attach a long hook to the side of the drum so you can hange the spool from it, close the lid and run for one minute. When removed the film is completely dry. That's quick! and no drying marks!

Tuesday, 6 December 2011

Maximum-energy developer


With this type of developer it is possible to double or treble the speed of a film. These developers promote an extremely strong response in the emulsion. They can increase the speed in a film that is too slow for the job. It can reliably produce a speed increase of up to three times with this pushed process. The big advantage with these developers is being able to keeping the grain fine and a good degree of sharpness. You need to be carefull when using them and follow the instructions. There are a couple of makes that have these attributes: Ilford Microphen and Promicrol.