ISO coding stickers?

Question

I was curious as to when you use ISO coding stickers to trick your camera into thinking it is a different ISO than what your using how you work it out to where say
Your using 400 but want to make it out to be 1600. If you put the stickers on will it automatically make it a 1600 ISO?
I don't know if I'm making sense.
I want my 400 ISO film to work as a 1600 or 3200 would.
Here is a site I found that kinda shows how the codes are designed.
Does this make sense to anyone?
http://www.bythom.com/dxcodes.htm

Thanks!

I'm just confused on how it works b/c even though you trick the camera the film sensitivity can not be tricked. Is that why you have to it developed as the higher ISO?
I dunno.....if it works it works. I'm just confused on how.
It's really cool though!

I have an N65 and it reads it automatically. I want a digital SLR and will get one but I may also check out the old N80. N80 lets you set it.

Answer 1

Yes, your camera is tricked into thinking the film is rated at the ISO speed shown by the sticker which it reads in exactly the same way as it reads the bar code printed on the cassette. But it doesn't 'make' the film 1600 ISO (or whatever). You, or your processor, would still have to develop the film as an uprated one. The film retains the rating that it was made with.

Answer 2

You don't have to trick the camera at all unless you are using a point and shoot camera that reads the film speed when you put the film in.

However in manual 35 SLRs or larger cameras, you can set the ISO where you want it - i.e. if you are using 400 film, you can set it at 800 and just notify the processor to push the film to 800 in the developing. You would probably be able to push 400 to 1600, but the amount of grain that you would get might not make your pictures look that good. I would only push on level higher to keep some quality tot he picture.

If your camera is older and has no 800 or 1600 on the ISO scale, forget setting that at all and use a hand held light meter and set the light meter at the speed and it will give you appropriate shutter speeds and lens apertures, so set them the way the meter tells you to.

The whole above is called PUSH PROCESSING.

There is also the capacity to PULL process. That would be used if you only had ISO 400 film, for instance, and there was too much light, so you wanted to shoot it at 200, or 100

In both cases you have to tell the processor what speed you shot the film at. Do not take those films to Walmart, Kmart, Target, or any other 1 hour type of facility, you have to take them to a pro processor.

Answer 3

Some cameras.....you can tell it without worrying about the sticker thing...especially if it is a SLR type...If you have a point and shoot...the stickers work.

You don't want to trick it that far though...it is fine to go from 400 to 800 or 800 to 1600...if you are trying to get the speed without the noise/grains...you then have to adjust the stops if an SLR..

Good luck