Film Suitability

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mark

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1) Anyone successfully used delta 100 for Pd or kallitype?

2)anyone ever gotten it to expand higher than N+1?

3)anyone know of a twin that comes in 5x7? FP4 is not a twin
 

veriwide

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Twin?
 
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mark

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Delta 100 does not come in 5x7. Is there a film out there that does that is just like delta 100 or is renamed. Like Forte is Bergger, is Classic, and I believe photo ware house brand is a repackaged ilford.
 

veriwide

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Ok, I get it. I've only used fp4 with my 5x7. Sorry, I don't know of a 5x7 film that would compare to Delta 100. I wish Delta 400 came in 5x7.

I shoot Delta 400 Pro in 120 size, develop in straight Perceptol, and on my 18x24 enlargements, there is still NO GRAIN!! It is the only film I shoot with my Veriwide.
 

Aggie

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Forte and Bergger are definately not the same. Ive used both quite a bit.
 

Aggie

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I have curves, but I refuse to take pictures of myself
 

livemoa

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Forte and Berrger are different, Forte and J&C Classic are apparently the same
 

Tom Hoskinson

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Mark, have you considered Efke 100? I have been shooting it recently in 4x5, taking side-by-side shots with Delta 100 and developing both in Pyrocat-HD. Efke 100 is certainly not a twin of Delta 100, but it looks like it is more amenable to expansions and contractions.

Having said that, I am very fond of Delta 100 and wish it was available in 5x7.
 

sanking

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jdef said:
Hi Aggie. Sandy says they are. How do you come to your conclusion?


I have compared JandC Classic 200 to Bergger BPF 200 and they test almost exactly the same.

And I did the same for JandC Classic 400 and Forte 400. They also test exactly the same.

I am not sure what Forte film is being compared to BPF in this thread. If it is Forte 200 I have not had an opportunity to compare it to BPF 200.

Sandy King
 

Aggie

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it was the forte and bergger Iso 200 on each. The film base is different and the color of the water coming out on the presoak is different also. the negative after devleoping is different and I used the times listed for each which is different. The grain on the bergger was bigger than the forte using the same developer on both.
 

sanking

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I finally received some fresh Fortepan 200 film and tested it today. This follows recent testing of JanC Classic 200 and Bergger BPF 200. All of the films tested were in 4X5 sheet film size and of very recent production.

Fortepan 200, JandC Classic 200 and Bergger BPF 200 appear to be the same film with different wrapping. For example, all three films show the following.

1. give the same light turquoise/cyan color from the pre-soak water;

2. give virtually identical density reading in both Blue and UV mode on all 21 steps of a transmission step wedge, at development times varying from 5 to 22 minutes;

3. have a virtually identical point of gamma infinity in terms of CI;

4. produce curves that are virtually identical for any given time of development.

Sandy King
 
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