High ISO's and film

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Amtrak7
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High ISO's and film

Post by Amtrak7 » Sun Nov 09, 2008 7:09 pm

On a digital camera, high iso's will cause a blurry image.

Is this true of film?

EMTRailfan
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Re: High ISO's and film

Post by EMTRailfan » Sun Nov 09, 2008 8:52 pm

Amtrak7 wrote:On a digital camera, high iso's will cause a blurry image.

Is this true of film?
You actually have it backward. A higher ISO will 'help' against blurring, but the blurring is mostly dependant on your shutter speed. As with film, a higher will create more grain/noise. An ISO is for the most part the equivelent of film's speed. A lower ISO will make a nicer photo, but your subject has to be stationary, and well lit.
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dj_paige
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Re: High ISO's and film

Post by dj_paige » Tue Nov 11, 2008 12:34 pm

Amtrak7 wrote:On a digital camera, high iso's will cause a blurry image.

Is this true of film?
On a digital camera, high ISO will cause a NOISY image. Blurring has nothing to do with ISO, it is only affected by subject motion and camera motion.

Both sentences above are true for film as well.
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railohio
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Re: High ISO's and film

Post by railohio » Tue Nov 11, 2008 8:57 pm

High speed film can cause a grainy image. However the latest and greatest slide films, Fuji's Provia line, have great grain structure that's barely noticeable when enlarged. Film has come a long, long way since Kodachrome 200...
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MEC407
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Re: High ISO's and film

Post by MEC407 » Tue Nov 11, 2008 9:25 pm

Very true. Kodachrome 200 was particularly grainy, but also particularly sharp, which can actually be a nice combination depending on what kind of look you're going for. I like to think of it as the color version of Tri-X.
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RailBus63
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Re: High ISO's and film

Post by RailBus63 » Thu Nov 13, 2008 9:53 pm

I loved using Kodachrome 200 for available light photos, including nighttime images taken at stations, subway shots, etc. The grain was much less noticeable than it would be in a daylight photo and the sharpness was awesome.

MBTA Boeing LRV 3500 at Hynes-Convention Center station in December 2005 (K200 - Nikon EM w/ 50 mm f1.8 lens, f4 at approx. 1/15th second exposure)

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n01jd1
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Re: High ISO's and film

Post by n01jd1 » Wed Dec 24, 2008 10:14 am

Amtrak7 wrote:On a digital camera, high iso's will cause a blurry image.

Is this true of film?
With film higher ISO's give you grainier images. Kodachrome 64, if you can find it and get it processed has little or no grain but is very picky. It does not respond well to over/underexposure. 100 speed films have very fine grain but are not good for low light. 200 speed is a good all around film. The grain isnt bad and works well under most lighting conditions. 400 speed is pretty grainy but usable. Good for dire emergencies when you cant get anything else or for low light situaltions. 800 speed and above, forget it. Way too grainy and a waste of money for the one or two f stops you would get from them.
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MEC407
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Re: High ISO's and film

Post by MEC407 » Wed Dec 24, 2008 11:32 am

Today's digital SLR cameras have high ISO capabilities that blow film out of the water. My Pentax K100D, which is over two years old and no longer in production, produces results at ISO 1600 that look as good as, or better than, ISO 200 film.
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Chessie GM50
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Re: High ISO's and film

Post by Chessie GM50 » Thu Jan 01, 2009 5:30 pm

MEC407 wrote:Today's digital SLR cameras have high ISO capabilities that blow film out of the water. My Pentax K100D, which is over two years old and no longer in production, produces results at ISO 1600 that look as good as, or better than, ISO 200 film.
But not everyone has an SLR. My d60 blows the G9, out of the water when it comes to ISO performance. The difference is the physical size of the sensor (NOT megapixels) and the Image Processor. You can't group ALL digital cameras in the same boat in terms of ISO performance, because different types, and even brads will give different results.

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MEC407
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Re: High ISO's and film

Post by MEC407 » Thu Jan 01, 2009 5:42 pm

Chessie GM50 wrote:You can't group ALL digital cameras in the same boat in terms of ISO performance
Correct, which is why I specifically said "digital SLRs" and didn't say "all digital cameras."
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Chessie GM50
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Re: High ISO's and film

Post by Chessie GM50 » Fri Jan 02, 2009 10:47 am

MEC407 wrote:
Chessie GM50 wrote:You can't group ALL digital cameras in the same boat in terms of ISO performance
Correct, which is why I specifically said "digital SLRs" and didn't say "all digital cameras."
I wasn't directing that to you...

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