[pure-silver] Re: Optimum results pushing 4x5 Tri-x 320 at 800 or 1600iso??
- From: <mark@xxxxxxxxxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Sun, 16 Sep 2012 21:15:10 -0700
I agree with the others. I know Ansel didn't bracket, but how many of us have his knowledge and talent? I bracket. ISO is really not going to make that much difference when all the other factors come into play. Better to set the camera on a solid tripod and if need be add a bit of weight to make sure its rock solid. Try to pick a calm night. Id use the f stop that happens to be the sweet spot for the lens, then keep adding seconds.
One thing you might do that would get you close is to take your (sorry guys) digital camera. Put on the tripod and go up in time till you get something on the display that comes close to what you are looking for. The exposure will not transfer directly over, but it should get you in the ball park and you can bracket from there.
Many of old timers remember doing things like this with Polaroid film.
-------- Original Message --------
Subject: [pure-silver] Re: Optimum results pushing 4x5 Tri-x 320 at 800
or 1600iso??
From: Eric Nelson <
emanmb@xxxxxxxxx>
Date: Sun, September 16, 2012 7:47 pm
To: "
pure-silver@xxxxxxxxxxxxx" <
pure-silver@xxxxxxxxxxxxx>
I would 2nd that. Night shots with nearly point sources of light make it really tricky to get any detail in those lights and pushing will make it much more so.
Bogdan,If it's a building, and nothing's moving, why not just rate it as you normally would. Night exposures are always a WAG anyway; with deep shadows and reciprocity, it's mostly just trying to get sufficient info on the film to develop. If you have a couple of nights left, perhaps the best thing to do is make a couple of exposures one night, process them; then make what adjustments you want to make on a second night.
Bob Younger
On Sun, Sep 16, 2012 at 5:06 PM, Bogdan Karasek
<BKarasek@xxxxxxxxxxxx> wrote:
Hello,
Needless to say, I got all sorts of contrary opinions as to how high you can push the iso of 4x5 TX 320asa and still get satisfactory results??? And what developer will give those results?
They are building a new super-hospital campus with several 10-12 story buildings, not far from here, 15 minute walk. The sides are still open and the work lights are left on at night. Quite the spectacle. I want to catch this on the above mentioned 4x5 sheet film, before they close up the walls. I'm using a Toyo 4x5 CF with a 127/7.7 Ektar in a Supermatic shutter and a monopod. Lens standard set to infinity and use the viewfinder with the #4 mask and three loaded Grafmatics.
Any opinions dearly welcome.
Cheers,
Bogdan
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