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DPChallenge Forums >> Photography Discussion >> What ASA do you shoot at?
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04/06/2004 11:13:07 PM · #1
Does it really matter when shooting in digital? I mean as far as grain goes.
04/06/2004 11:22:50 PM · #2
It is now ISO (your age is showing!)

The higher the ISO setting on a digital camera the more 'noise' in the picture, so the quality is degraded just like more grain in film. Programs like neatimage and some photoshop plugins do a good job of removing the noise. Higher iso is similar to turning up the volume on a stereo - it gets louder, but you also get distortion.

There is no free lunch.
04/06/2004 11:46:30 PM · #3
100, sometimes 200, rarely 400, once 800.
04/07/2004 12:11:11 AM · #4
mostly 50
04/07/2004 12:14:04 AM · #5
Mostly 50, but I long for a camera which can shoot 400 without noise, like the Canon CMOS based SLRs. That's one of my top specs in my next camera.

I want to be able to capture with control and adequate shutter speed in low light!
04/07/2004 12:21:09 AM · #6
Originally posted by shoff:

Does it really matter when shooting in digital? I mean as far as grain goes.


How much it matters depends on the camera. Smaller camera's (like my Coolpix 995) suffer horribly once you step away from ISO100, or perhaps ISO200.

The Digital SLR's suffer less from the problem. The Canon's are the best - even at very high settings like ISO1600 they produce reasonable results.

This page on DPReview mentions an interesting change when you modify ISO settings on your particular camera...

//www.dpreview.com/reviews/fujifilms7000/page12.asp

Regards,

Mark

If you visit
04/07/2004 12:31:26 AM · #7
I hope this helps... I took these a few weeks back...

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Camera Model Name
Canon EOS DIGITAL REBEL
Shooting Date/Time
3/21/2004 8:16:20 AM
Tv( Shutter Speed )
1/25
Av( Aperture Value )
5.6
Exposure Compensation
0
ISO Speed
1600

And...

'' . substr('//images.dpchallenge.com/images_portfolio/17837/thumb/68777.jpg', strrpos('//images.dpchallenge.com/images_portfolio/17837/thumb/68777.jpg', '/') + 1) . ''

Camera Model Name
Canon EOS DIGITAL REBEL
Shooting Date/Time
3/21/2004 8:16:22 AM
Tv( Shutter Speed )
1/20
Av( Aperture Value )
5.6
Exposure Compensation
0
ISO Speed
1600

(virtually no grain whatsoever at ISO 1600 :})

Message edited by author 2004-04-07 00:32:31.
04/07/2004 12:51:02 AM · #8
Even in Digital medium it matters what iso speed you shoot at. Slower speed the better , same as Films.

i shoot 90% of time in 100 rest 10 % at 50
04/07/2004 12:54:03 AM · #9
Mostly 100.
04/07/2004 01:00:59 AM · #10
Originally posted by outofreachx:

I hope this helps... I took these a few weeks back...

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Camera Model Name
Canon EOS DIGITAL REBEL
Shooting Date/Time
3/21/2004 8:16:20 AM
Tv( Shutter Speed )
1/25
Av( Aperture Value )
5.6
Exposure Compensation
0
ISO Speed
1600

And...

'' . substr('//images.dpchallenge.com/images_portfolio/17837/thumb/68777.jpg', strrpos('//images.dpchallenge.com/images_portfolio/17837/thumb/68777.jpg', '/') + 1) . ''

Camera Model Name
Canon EOS DIGITAL REBEL
Shooting Date/Time
3/21/2004 8:16:22 AM
Tv( Shutter Speed )
1/20
Av( Aperture Value )
5.6
Exposure Compensation
0
ISO Speed
1600

(virtually no grain whatsoever at ISO 1600 :})


Life is SO not fair! ;)

No, that is quite impressive, especially at ISO 1600. I get that kind of noise on ISO 200
04/07/2004 01:04:19 AM · #11
i guess i usually try shoot at the lowest iso possible... but i am not afraid to use high iso as well, if it means being able to shoot.

here is a ISO 3200 i shot.
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Shooting at that jazz club i would always shoot 3200
04/07/2004 01:06:59 AM · #12
yeah, i wouldn't say there's virtually no noise on those 1600 shots - the background is pretty speckled with green and purple. but that's what i'd see at like 400 on my camera, so i'm still really impressed!

i shoot 50 - nothing else. i don't even pretend that my camera can shoot at anything else.
04/07/2004 01:08:06 AM · #13
OMG that 3200 shot is amazing. canon is the king.
04/07/2004 03:14:42 AM · #14
i shoot at the lowest ISO that my camera can handle. although, it really is dependent on what shots i'm taking. if i were to do concert shots and needed a good shutterspeed, i'd bump up the ISO. General makes a good point. in film, the higher ISO(or ASA) means that the pictures will look a lot grainier.

in digital, what you get is noise. this is prevalent on images with a lot of black. if you take a digital picture of a black background at ISO 50 or 100, the image will look black. If you take the same picture at a higher ISO, say 1600 for arguments sake, you'll see that the image won't be completely black. you'll see discolorations in the black background.

here's a good comparison of the canon-10d set at different ISOs. The higher the ISO, the more noise you can see in the grey.
//www.dpreview.com/reviews/canoneos10d/page18.asp
04/07/2004 04:02:59 AM · #15
Originally posted by General:

Even in Digital medium it matters what iso speed you shoot at. Slower speed the better , same as Films.

i shoot 90% of time in 100 rest 10 % at 50


I use 99% 50. To my knowledge (not sure about your A40) ISO50 on A70 is the equivalent of 100 on other cameras.
Got this answer on my ISO question on canon A, G, S series
"Tibi: As well as shutter speed and apeture, the ISO rating of the film will make a difference to the exposure. The ISO settings on the A-series cameras are not the same as the film ISOs. ISO 50 on the A70 is nearer to an ISO 100 film."
04/07/2004 04:15:21 AM · #16
Edinburgh's Torchlit Procession

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Shot at ISO 1600

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Shot at ISO 1600

Think that's the only time I've really changed the ISO, maybe once or twice up to 200 but that's it.

*edited : coz I wasn't looking properly...

Message edited by author 2004-04-07 06:21:31.
04/07/2004 05:34:56 AM · #17
ISO 4000 on the 300D?
04/07/2004 05:46:24 AM · #18
This was shot at ISO 14000!!!!!

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04/07/2004 06:19:16 AM · #19
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Shot at ISO 96,000.

It was the dead of night; no moonlight. 1/60"
I did have to use +1/3 exposure compensation, tho.

Actually I normally shoot at ISO 100 or 200 with models. I tend to shoot 200 up to 800 with high school sports since the majority of the games are played late afternoon and into the twilight hours and I need some of those 1/500" or faster to capture the action (daylight savings time is a godsend).

Kev

Message edited by author 2004-04-07 06:54:07.
04/07/2004 06:20:54 AM · #20
Originally posted by Konador:

ISO 4000 on the 300D?


LOL, what an ar*e... looking at the wrong bit.... Today should be a Monday...

4000 is the shutter speed. Well spotted!
04/07/2004 06:26:38 AM · #21
hehe, I hate days like that
04/07/2004 07:52:30 AM · #22
I shot this at 1600
//www.dpchallenge.com/image.php?IMAGE_ID=64929
04/07/2004 08:12:56 AM · #23
Mostly at ISO 100, though I'll use ISO 200 to get a bit more contrast into the shots. 400 for sports and I try to avoid going faster as the colours and detail suffers. 800 and 1000 if I need them to get the shot, but the results are usually not that printable.
04/07/2004 08:27:58 AM · #24
400 almost all the time
04/07/2004 01:18:16 PM · #25
I try to shoot at 50 whenever I can (90% or greater). Sometimes I accidently put it in AUTO though.

When I was shooting film I almost never bought ASA greater than 200. I figured if I couldn't get the shot without the grain the higher ASA imposed, then it wasn't worth taking.
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