I have a spot meter and no in-camera meter. So that's the plan.
If you meter using Zone System practice and place a shadow spot reading on Zone II as Minor White suggests in “Zone System Manual” - 1963, then a 2/3 stop or 1 stop downrating adjustment in EI matches “tone reproduction theory” speed and “Zone System” speed.
But if you place shadow reading on Zone III as Ansel Adams suggests in “Exposure Record” - 1964, then effectively you have snuck in a one stop EI downrating.
And for some added confusion (i.e., my own), you could place your shadows on Zone IV, as Bruce Barnbaum suggests.
Placing Shadows on Zone IV question
found this video some time ago,and wondered if some people could help me. question:would this mean that this way exposed negatives should be developed N-? if my personal film speed is iso 50 for tmax 100 should i place still on VI,or can i expose III? can someone shed some light here? Thanks in...www.photrio.com
Barnbaum is obviously a skilled printmakers who ends up achieving the look he wants. But he sure does it the hard way. And yeah, he's a holdover of the old "thick negative" school of TriX 320, which worked a lot better in relation to long-scale contact papers and alt media like Pt/pD rather than typical silver gelatin enlargement papers.
Another person who bought into that old Tri-X thick negative technique with mixed results is Roman Loranc. The overexposure gives him wonderful shadow gradation; and then he brings character into the highlights by means of split toning. But when the sulfide step of the toning doesn't go so well (and it is somewhat unpredictable), then the highlights are just plain blank and disappointing. He too can make some wonderful prints; but I wonder how many he has to throw away.
Alex - There's a reason Barnbaum had to rely so much on Farmer's Reducer to clear up print highlights - shadow placement on Z4 is absurd. And then add cutting the speed of TMax100 down to 50 (TMax has quite a long straight line; so Z4 shadow placement ends up with something overexposed by 4 or even 5 stops more than necessary). Then to try to manage that monstrosity, the ole Zone approach would tell you to do minus minus minus development - drastically compressing the whole sandwich, and scrunching all the life and sparkle out it : a flat image.
A basic look at the characteristic curve or TMX tells one that shadow texture placement is safe even on Z2, unless your meter or metering technique is way off. TMax films are among the few I can confidently rate at full box speed due to the fact that the toe is relatively short.
It's a great film for high contrast scenes, but not if one wastes all that real estate lower down in the curve though unnecessary overexposure. That's how the highlights get blown out.
It's a subjective decision in the end, of course, but there are a few things worth keeping in mind when it comes to Barnbaum:
1. He uses Tri-X 320, which has a longer toe than other films and an "upswept" curve shape (amplified by HC-110, the developer he prefers). Medium/high speed negative films have lots of highlight latitude. He's also using sheet film, which makes any consideration of image structure in relation to exposure a moot point, so extra exposure can sometimes be a good thing. You can never really have too much shadow detail in a negative.
2. His sensitometry is flawed. If you read his books, he states he has never owned a densitometer, which is perfectly fine - except if you are showing people your film curves, which are then fictitious and only potentially illustrative of what's actually happening.
I think it's important to remember that while you don't need to do any exposure/tone reproduction theory or sensitometry to make wonderful prints (or negatives), you should probably do some if you are going to teach it or present it.
I've always found Barnbaum's assertions kind of odd in light of that fact he's a scientist by training. He seems to have fallen into the same trap as many - that is - he works on his prints, gets his desired results and then assumes it's because the exposure, film, development are doing X when in fact that may or may not be the case.
If someone likes the results they get by exposing detailed shadows on Zone IV, or Zone III, or Zone V or Zone II, there's nothing right or wrong about it. It's just that you might not be getting what you think you're getting.
As always, printing is where the real control is.
Alex - even standardizing on Zone III for shadow textural placement makes little sense to me unless it's an especially long-toed film. With the right films, I'll do it even on Z 1 or 0
Barnbaum states his Zone IV dogma with such authority
Well then, ignore my long-winded post about my methods using averaging meters.I have a spot meter and no in-camera meter. So that's the plan.
I've used lots in the past, but currently TMY and 320Tri-X are my go-to films. I rate them both at E.I. 250. For some reason, TMY seems to need that extra 1/3 stop compared to Tri-XDoremus - what film are you accustomed to using, and at what "personal" speed rating?
All the Zone System testing that AA and Minor White, et al. call for is largely unneeded these days, especially if one uses VC papers.
Don't underexpose and don't over develop the film.
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