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But that's only half the story. You rate Delta 400 @ 100 but you also pick a suitable developer, dev time and agitation regime to achieve the tones you are after. It is documented that you can do miracles with films&devsThe Delta 400 @ 100 example, I don't shoot it like that for more shadow detail, there is plenty already, but the entire tonality seems to change with this method and looks like a completely different film.
This is something I would like to try at some point. I plan on running a test strip of Tri-X and Delta 3200, with 4 frames in sequence exposed at rated speed, underexposed by 3 stops, 6 stops and 9 stops. I plan on souping and pushing these in HC-110, DK-50, D-72, D-19, D-82 and D-8 and will report the results somewhere here on APUG. I'm curious how much light is really required to create detail at the expense of tonality and grain. If you can point me to a source where someone has already done something similar, it could potentially save me from a lot of work.There is so much DR into the shadows as well, it's just that you'll never be able to ever get that far in any normal kind of push, and you think the DR cuts off there.
Because at less of a push, it is developed less (obviously) and even lower contrast, the contrast there further more you go into it gets lower and lower and lower (toe), so will just disappear into any normal image.
It's unusable DR unless you only use that portion.
Rudeofus said:Athiril posts that he can get Delta 3200 up to ISO 1600 in Microphen, and in terms of ISO speed (in its strict sense) he may be correct. This does, however, not exclude that many folks including myself get pleasing results @ISO 6400 in the "the image looks right" sense. While Athiril rates Delta 400 at ISO 100, you rated it at ISO 3200 and got results you liked. Do these have great shadow detail? Hell no, but the images still look good to you and that's all that matters.
Finally, something like TMax, Xtol, or DD-X will give about 1/2 stop speed advantage over something like HC-110. If that's important to you, it's worth exploring a speed-enhancing developer. If it doesn't matter, it's best to just continue with what you have.
Did some tests with DD-X. Delta400 @3200, very nice, but damn that stuff is expensive in use! 1+4....
I use a rotary process so the volume is low. Which makes it more affordable. But it is a very nice developer.
Something like this.What do you mean with 'rotary'?
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