Let's talk film
Feb 27, 2017 23:11:25 #
I'm watching video's and in several video's there talking about "Pushing" What are they talking about, I assume there talking about pushing the speed of the film, How is this done? and what are the effects? Witch way do you push it to get the outcome you want?
Feb 27, 2017 23:13:40 #
HOT Texas wrote:
I'm watching video's and in several video's there talking about "Pushing" What are they talking about, I assume there talking about pushing the speed of the film, How is this done? and what are the effects? Witch way do you push it to get the outcome you want?
Push is qhen you expose at an ISO higher than the films ISO and then develop the film longer to compensate. For example 400 ISO film shot at 640 ISO and then develop 16 mins instead of 12 min
Feb 27, 2017 23:47:40 #
Darkroom317 wrote:
Push is qhen you expose at an ISO higher than the films ISO and then develop the film longer to compensate. For example 400 ISO film shot at 640 ISO and then develop 16 mins instead of 12 min
You pushed and you pulled. When you set the ASA in your camera higher than it was rated for, and processed accordingly, you got the results of higher speed film.
When you pulled the film, you set the ASA in your camera lower than the rated speed and processed accordingly for results of slower speed film.
There was more flexibility to film than the digiheads of today knew about. This was fairly common practice with film users. There were films rated up to 1600, and some would push them to 3200 speed and process changing the math to get certain results.
Dodging and burning certain areas of the film during enlarging was another way of getting what appeared to be the results of different speeds.
Feb 28, 2017 03:38:31 #
Feb 28, 2017 03:46:12 #
Pablo8
Loc: Nottingham UK.
Kuzano wrote:
You pushed and you pulled. When you set the ASA in... (show quote)
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Pushing would often be done on 'Sports' low light conditions, and extra development of the negative would increase the contrast. In many cases, that would be a help. Pulling....I used this on high contrast subject/lighting conditions, and the subsequent action of a shorter development time, would lower the contrast
on the negative.
Feb 28, 2017 04:26:20 #
HOT Texas wrote:
I'm watching video's and in several video's there talking about "Pushing" What are they talking about, I assume there talking about pushing the speed of the film, How is this done? and what are the effects? Witch way do you push it to get the outcome you want?
When I was shooting movie a lot (long time ago), I pretty regularely set a different ISO speed, than I really had in the camera (with certain films), to get an overall more saturated footage. I guess you could call that pushing the speed.
Feb 28, 2017 07:53:07 #
Kuzano wrote:
You pushed and you pulled. When you set the ASA in... (show quote)
I never heard of a camera where you could SET the ASA. That's a fixed on the film used. You set exposure, which might be beyond the comfortable capability of the film. Then you "pushed" the film in development. Heat could also be used during development. Or....I'm all wet.
Feb 28, 2017 08:15:58 #
billnikon
Loc: Pennsylvania/Ohio/Florida/Maui/Oregon/Vermont
HOT Texas wrote:
I'm watching video's and in several video's there talking about "Pushing" What are they talking about, I assume there talking about pushing the speed of the film, How is this done? and what are the effects? Witch way do you push it to get the outcome you want?
We used to push Kodak Tri-X black and white film all the time to asa/iso 6400. We bought a special developer for processing it. The stop and fix bathes stayed the same. Just the developing solution was different. I remember it was not cheap. If we pushed to asa/iso 1600 or 3200 we used Kodak developers at longer than normal processing times or at higher temperatures than normal. Of course, you got grain but the shots were fine for the newspapers we worked for.
Feb 28, 2017 08:32:43 #
billnikon wrote:
We used to push Kodak Tri-X black and white film all the time to asa/iso 6400. We bought a special developer for processing it. The stop and fix bathes stayed the same. Just the developing solution was different. I remember it was not cheap. If we pushed to asa/iso 1600 or 3200 we used Kodak developers at longer than normal processing times or at higher temperatures than normal. Of course, you got grain but the shots were fine for the newspapers we worked for.
Diafine and Acufine were our "drugs" of choice when pushing. If I remember correctly, Diafine was a 2-step developer, followed by stop and fix.
Feb 28, 2017 08:39:46 #
Don't know what kind of cameras you've been using, but every film camera or meter that I have allows one to SET the ASA (ISO). I'd say you were more damp than all wet.
--Bob
--Bob
djtravels wrote:
I never heard of a camera where you could SET the ASA. That's a fixed on the film used. You set exposure, which might be beyond the comfortable capability of the film. Then you "pushed" the film in development. Heat could also be used during development. Or....I'm all wet.
Feb 28, 2017 08:41:10 #
djtravels wrote:
I never heard of a camera where you could SET the ASA. That's a fixed on the film used. You set exposure, which might be beyond the comfortable capability of the film. Then you "pushed" the film in development. Heat could also be used during development. Or....I'm all wet.
You had to tell the meter what ISO film rating you were using, and then use normal or push or pull development for that rating.
Feb 28, 2017 08:43:26 #
djtravels wrote:
I never heard of a camera where you could SET the ASA. That's a fixed on the film used. You set exposure, which might be beyond the comfortable capability of the film. Then you "pushed" the film in development. Heat could also be used during development. Or....I'm all wet.
I assume it's the same for other high end film cameras. You could set the ASA on my canon F-1. I pushed Panatomic X (asa32) to 400 and developed in Diafine. Have virtually grainless 16X24 prints- unless viewed from 6 inches or less. And truly grainless 8X10. unless viewed with a 10X loupe. I loved Pan X- all of my published work was done with PanX
Feb 28, 2017 08:51:48 #
Retina
Loc: Near Charleston,SC
djtravels wrote:
I never heard of a camera where you could SET the ASA. That's a fixed on the film used. You set exposure, which might be beyond the comfortable capability of the film. Then you "pushed" the film in development. Heat could also be used during development. Or....I'm all wet.
As others already replied, of course you are correct in that the ASA setting on the camera did not affect the film. It was only an aid to the photographer to calibrate the meter to the speed of the film when developed the standard way. The photographer's comfort choice was between finer grain, lower speed, and wider latitude vs. higher speed and narrower latitude at the expense of grain, just as with electronic cameras. One unsung gift with digital is like cut sheet film cameras where you can expose and develop each photograph independently whereas with 35mm and 120 film cameras you were stuck with one ASA for the whole roll. Some might recall an article in Modern Photography where Tri-X was tried at a range of speeds They liked the images at ASA 50 the most. However, Tri-X was useful enough at higher speeds for everyday shooting and was rated at ASA 400. When using Kodalith I set the camera's meter to ASA 3 so the exposures were consistent even though I never saw a rating for it.
Feb 28, 2017 08:54:15 #
Retina
Loc: Near Charleston,SC
GoofyNewfie wrote:
The neat part about Diafine was with the 2 baths you did not have to watch the clock as closely as with Acufine and others.Diafine and Acufine were our "drugs" of choice when pushing. If I remember correctly, Diafine was a 2-step developer, followed by stop and fix.
Feb 28, 2017 09:02:34 #
Retina wrote:
The neat part about Diafine was with the 2 baths you did not have to watch the clock as closely as with Acufine and others.
Yes, I remember the word "about" used when referring to development time.
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