how do 1hour stores develop iso160 film?

haagen_dazs

haagen_dazs

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hi
i have a question about developing iso 160film at a 1hr photo store eg walgreens or cvs

i have previously asked the photo technician on how they determine which iso would they develop the film at.

he said that they just insert the film cartridge into the "right" holder that says iso 100. 200.400.or 800
(this is for the fujitsu or noritsu??)

reason why i asked was i wanted to know if they could push film for me. by putting a iso 400 cartridge in and overwriting that information in the program.
anyhow, he didnt know nutz about developing.

so anyways, my question at hand is.

how do they they develop iso160 film???
 
From how I understood it all C-41 (and E-6 too, just different chemicals) film is developed with the same times and chemical orders regardless of speed, so ISO 160 film shouldn't need any special accommodations.
 
I've used a couple of C-41 machines quite a lot last year... As erik says, all films go through the same way.

But. It must be different for 'professional' machines.
 
Yep, all C41 film is developed in a standardized process no matter what the DX-code.

I'm afraid you'll have to find a pro lab to do it for you, very few 1hr labs can alter their machines to the extent necessary to push process for you. The biggest problem is that the 1hr machines pull your film through the chemicals at a specified speed. To increase the time in the developer, you'd have to slow down the transport but the speed is the same through all the baths which means your film will spend too long time in the bleach as well.
 
ClaremontPhoto said:
I agree with the above: C41 is a standard developing time and the ISO is not a part of the equation.

As far as I know.
Click to expand...

thank you everyone!
i did not even know that it was a standard time.
you all have been helpful
thats what i love about this forum site.
:angel: :angel:
 
I think what the technician was really trying to tell you was how they balance prints from various films. The C-41 process is defined the same for all C-41 process films. What is different is the printer - the analyzer has presets (channels) for each film brand and speed. These settings are used to make reasonably accurate prints from the different types of films.
 
One hour photo finishing labs use C41 rapid access process for color negative processing. The C41 process is not variable for various ASA films. Rapid access process is washless, the C41 process used in professional color labs has two wash steps. In theory this leads to a negative with a longer life.
 
Cary what are the time differences for the two? Or does it differ from manufacturer to manufacturer?

I ask because one machine I used spat stuff out in < 15 mins (Noritsu?) and the other (no idea of the name, not noritsu or fuji or any name I could remember) took much longer (may be 30 mins).
 
I suspect that you will need to find a lab with a dip-and-dunk machine in order to get a push in the first-dev - so a "professional" one instead of the one-hour shops. It would probably be simpler, much cheaper and give better results to use a higher speed film to make the photos if at all possible.

For rescuing a multi-stop "disaster" of some sort then a push might help. A technical talk with the lab is called for I think !. Good luck.
 
My former lab when I lived in Prague once helped me to fix a problem, I had shot a roll of Portra 160NC at a speed of 400, they underexposed one and half stop and the results were fine :)
 
EmilGil said:
Yep, all C41 film is developed in a standardized process no matter what the DX-code.
Click to expand...

Last winter I had a roll of Fuji 800 break off as I started to rewind.

To salvage the images I "sacrificed" a roll of W/A 200, taped the end of the Fuji 800 to the cut-off end of the 200, and wound it back into the 200 cartridge.

I very carefully covered the DX code with nail polish to be sure that nothing automated would mis-read the film as ISO 200. When I took it in, I explained what had happened and that it was actually Fuji 800. She said that I didn't need to do that since the development process is all the same and it doesn't adjust anything according to the DX code. This was on a Fuji Frontier machine.
 
Anyone know what the ideal ISO would be for something like the 1 hr Fuji Frontier or does it truly not matter. Also I heard that Fuji film develops best on the Fuji Fronteir?
 
kshapero said:
Anyone know what the ideal ISO would be for something like the 1 hr Fuji Frontier or does it truly not matter.
Click to expand...

I'm not a photo chemist by any means, but from what I've been told by those operating the machines and by those who process color at home, the baseline processing is the same for all brands and speeds.

Also I heard that Fuji film develops best on the Fuji Fronteir?
Click to expand...

Possibly, but I would think that the type of chemistry and the age/condition of the chemistry would be more significant than the brand of mini-lab. I do know that Walgreens uses (or used recently) Kodak chemistry in the Fuji Frontiers.

I've also heard all kinds of horror stories of some shops continuing to use rancid chemistry long after it should have been changed or replenished.
 
revisiting this thread again.

so if timing doesnt matter, doesnt that mean that the 1hr labs can develop iso1600film?

if i recall correctly, the technician told me they don't develop iso1600. (only 800 and under) .???
i am not sure if i heard them right though
anyon can verify?
thanks
 
C-41 film (that discribes the chemicals used to develop and fix the images that you shot) is made to be developed in machine at a single speed. That speed will work for film that has an ISO rating of 100 or 3200.

What might be confusing you is when you PUSH the film from the speed it is made to be exposed at to a higher speed. One example of this is when you shoot Tri-X at 3200 and develop it in D-76. You need to keep it in the developer longer than you would if it was shot at it's rated speed of 400. The pushed film would not go into a development machine (like a one hour lab) at the same time as the non-pushed film.

Few one hour labs do anything by C-41 which I do not think will work with Tri-X.

B2 (;->
 
It's all the same to me, but

It's all the same to me, but

I've found that when I take my film in to the local drug store and I meet their schedule of cleaning and refilling their machine I get MUCH better results. I just have to be there at 9am Monday mornings then I'm first into the soup!
 
haagen_dazs said:
so if timing doesnt matter, doesnt that mean that the 1hr labs can develop iso1600film?
Click to expand...

You are correct. Every roll of 1600 I've shot has been done in a plain vanilla mini-lab.

if i recall correctly, the technician told me they don't develop iso1600. (only 800 and under) .???
Click to expand...

That's news to me. What he or she might have meant, or might have misinterpreted from a manager, is that they don't push-process 800 to 1600 or something like that.
 
I don't want to beat a dead horse, but on Tuesday of this past week I taught my color class how to develop their first rolls of film in C-41 chemicals. Regardless of film maker, or ISO, the film is developed for
3 minutes 15 seconds @ 100 degrees with a .25 degree plus or minus temperature tolerance.
 
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