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John Hannon |
13:16 8 Nov 07 |
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Jorge Gasteazoro. |
19:05 8 Nov 07 |
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Ben Wilbur |
15:13 8 Nov 07 |
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Don Bryant |
19:22 25 Dec 07 |
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Jorge Gasteazoro. |
20:19 25 Dec 07 |
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Don Bryant |
16:15 27 Dec 07 |
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Barry Wilkinson |
3:03 28 Dec 07 |
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Re: Using a flash for testing. |
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Steve Nicholls |
15:59 28 Dec 07 |
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I pulled the light mixing/diffusion box out of my DeVere 504 and a design like that [amazingly simple] would certainly provide an even diffused light. I would estimate you would need a diffuser about 10"x10" so that the 5x4 film is central.
Also you could design a long square entrance tube lined with white foam that the flash head could be positioned along to [a] control light intensity and [b] provide more even diffusion
I was experimenting at one stage with a D2 condensor enlarger and a sheet of opal perspex but found that the light reduction was too much -- so -- it may be ideal for the flash to fire through and also for the film to sit on.
I have solved the film testing for myself with a dedicated condenser enlarger - always accurate and ready to go.
As an aside, does anyone use a colour head enlarger for testing? I tried a couple of times but the transformer/halogen light seemed to present exposure problems. Hence the D2.
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Barry Wilkinson |
2:11 29 Dec 07 |
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Steve Nicholls |
2:49 29 Dec 07 |
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