10d (ISO setting)

[jd_D60]

Quickie

bought 10d (still got D60 although sensor needs cleaning), - I decided to try shoting RAW with 10d, shot 100 or so images, got back and noticed the ISO setting was "H" which is 3200 - hence images are very grainy and won't be any good for their intended purpose.
Q - can I change the ISO setting in RAW conversion or is this fixed when shot.

john

[Roger_Cavanagh]

Nope, you can't change ISO after the fact. ISO causes the shutter and aperture settings to change and, hence, the amount of light captured.

Regards,

[Morden]

I'm afraid it is 'fixed when shot', as the 'noise' - or 'grain' - was recorded due to the high ISO setting in force at the time the images were taken.

I understand your frustration, as I inadvertently left the ISO setting on my 10D at 3200 the first time I used it, spoiling hundreds of otherwise decent photos. :(

[misaj*]

jd_d60 wrote:
Quickie

bought 10d (still got D60 although sensor needs cleaning), - I decided to try shoting RAW with 10d, shot 100 or so images, got back and noticed the ISO setting was "H" which is 3200 - hence images are very grainy and won't be any good for their intended purpose.
Q - can I change the ISO setting in RAW conversion or is this fixed when shot.

john



Try this software, it can do a miralce with a noise:

http://www.neatimage.com/index.html?C

[CyberDyneSystems]

Another miraculous (albeit pricey) utility is the PS Plug in "Grain Surgery" I wish I could afford it myself.

[Steve Barnhart]

Here's a PS6 or 7 plugin written specifically for 10D owners:

http://www.fredmiranda.com/actions

I haven't purchased it yet, but it's a huge hit with digital wedding photographers.

[excessnoise]

Slightly off orig. topic but fits 'Subject' heading. Some how my 10D has gone downhill as far as results lately. It seems I have to have my ISO set to 800 or higher or my shutter speeds are too low, thus blurred pics. Inside 1600 is needed. This even happens outside in the shade (full sunny day, southern california). This seems a bit excessive. I'm thinking that somehow I customized something in settings that it doesn't like, so maybe I'll just reset everything and see what happens. It also appears to back focus a lot. Haven't had time to check that out. I took some shots of friends holding their babies. Everyone was focused on the person behind the baby, the babies were all blurred and that was my focal point. Also big contrasts between shade / full sun. Shaded pics are under-develped. Sun over-developed. Bouncing all over with my settings.

Just wondering if others have had similar problems with ISO. I know there are some focus problems.

[Jeppe]

You guys should really use the function to prevent ISO3200. I have mine locked so yu cant go higher than 1600 (wich i personally think is the absolute limit for a descent picture).

[topeju]

excessnoise wrote:
Slightly off orig. topic but fits 'Subject' heading. Some how my 10D has gone downhill as far as results lately. It seems I have to have my ISO set to 800 or higher or my shutter speeds are too low, thus blurred pics. Inside 1600 is needed.

The obvious test is, of course, whether the pictures are properly exposed or not, irregardless of whether they are slightly blurred or crystal sharp.

[adamw]

jd_d60 wrote:
Quickie

bought 10d (still got D60 although sensor needs cleaning), - I decided to try shoting RAW with 10d, shot 100 or so images, got back and noticed the ISO setting was "H" which is 3200 - hence images are very grainy and won't be any good for their intended purpose.



What seems to me very weird, that you had ISO 3200 which by default is protected by Custom Function XX
and must be released before use.

Adam

[onehotrx7]

Hi Adam,

There I was thinking the same thing - especially with the post about setting it to be disabled - it's disabled by default...

Folks, consider 3200 as your emergency setting - if you MUST get the shot and there is no other way to get it - but be prepared for some noise...

Cheers,
Stuart

[rdenney]

excessnoise wrote:
Slightly off orig. topic but fits 'Subject' heading. Some how my 10D has gone downhill as far as results lately. It seems I have to have my ISO set to 800 or higher or my shutter speeds are too low, thus blurred pics. Inside 1600 is needed. This even happens outside in the shade (full sunny day, southern california). This seems a bit excessive. I'm thinking that somehow I customized something in settings that it doesn't like, so maybe I'll just reset everything and see what happens. It also appears to back focus a lot. Haven't had time to check that out. I took some shots of friends holding their babies. Everyone was focused on the person behind the baby, the babies were all blurred and that was my focal point. Also big contrasts between shade / full sun. Shaded pics are under-develped. Sun over-developed. Bouncing all over with my settings.

Just wondering if others have had similar problems with ISO. I know there are some focus problems.

Are you accidentally in aperture priority mode with a small aperture (large number) set? That would force long shutter speeds. Do you have a filter on the lens, like a polarizer? That will also take away a couple of stops, and if it's a linear polarizer, it will screw up the metering, too.

Proper exposure in sunny conditions is about f/11 or f/16 at a shutter speed numerically the reciprocal of the film speed. This is called the Sunny 16 rule. Thus, normal sunny-day exposure at ISO 100 should be f/11 or f/16 at 1/125, or some similar combination (i.e. f/8 at 1/250, f/5.6 at 1/500, and so on). Even with ISO 100, a sunny-day exposure should be no longer than about 1/60 unless your lens stops down farther than f/22.

I suspect that you are accidentally choosing an aperture of f/22 by whatever means, and that will force long shutter speeds at low film-speed equivalents in shady conditions and indoors.

Rick "who always checks a metering system against the Sunny 16 rule when doubts arise" Denney

[jd_D60]

given whats been said here about default settings and my ealrier post about having to go back because of excessive dust I could conclude that this camera may have been sold and returned

hmmmm

[excessnoise]

rdenney wrote:

Are you accidentally in aperture priority mode with a small aperture (large number) set? That would force long shutter speeds. Do you have a filter on the lens, like a polarizer? That will also take away a couple of stops, and if it's a linear polarizer, it will screw up the metering, too.

Proper exposure in sunny conditions is about f/11 or f/16 at a shutter speed numerically the reciprocal of the film speed. This is called the Sunny 16 rule. Thus, normal sunny-day exposure at ISO 100 should be f/11 or f/16 at 1/125, or some similar combination (i.e. f/8 at 1/250, f/5.6 at 1/500, and so on). Even with ISO 100, a sunny-day exposure should be no longer than about 1/60 unless your lens stops down farther than f/22.

I suspect that you are accidentally choosing an aperture of f/22 by whatever means, and that will force long shutter speeds at low film-speed equivalents in shady conditions and indoors.

Rick "who always checks a metering system against the Sunny 16 rule when doubts arise" Denney

I not running in manual mode. I usually prefer AV mode and let camera pic shutter. No filters inside, occassionally clear UV.

Inside my pictures set at ISO 800 with house lights on, sun coming in thru windows, shooting AV mode (shutter ends up 1/20 to 1/45 @ f6.7. If I use ISO 100, I'll have a shutter as slow as 1/3 sec, same f stop. (I'd upload pics with exif but I don't have them on any server. I don't know if you can upload from your personal pc. ?)

The camera just hasn't been acting consistent. I checked some outside pics exif info. Outside pictures (ISO 800, shutter 1/1500, f6.7 sun, 1/200 @f6.7 partial-shade) Picutres taken in shade appeared underexposed, sometimes badly. In the sun way overexposed. Ordinarily I wouldn't shoot that high of ISO except everthing has been coming out dark range when in shadows.

I reset camera last night to default settings so I'll test a little this weekend hopefully.

[rdenney]

Also try it in Program mode and see what it does. Take some pictures in bright sun and note the exposure. If you use Av all the time, you might be accidentally running up against the limits of your lens, though of course I'm just guessing. Do you have the aperture-priority safe mode on? It's a custom function that will let the camera force a different aperture than the one you select when it can't find a safe shutter speed.

Rick "looking forward to seeing your test results" Denney

[excessnoise]

rdenney wrote:
Also try it in Program mode and see what it does. Take some pictures in bright sun and note the exposure. If you use Av all the time, you might be accidentally running up against the limits of your lens, though of course I'm just guessing. Do you have the aperture-priority safe mode on? It's a custom function that will let the camera force a different aperture than the one you select when it can't find a safe shutter speed.

Rick "looking forward to seeing your test results" Denney

Thanks, I'll check out that "safe" mode. Didn't see that in the manual before. I don't think this camera has a powerful enough computer to be "safe" with me behind the lens. ;-). I'll play with it this weekend and see if its any better after resetting and I'll check that safe mode.

[CyberDyneSystems]

jd_d60 wrote:
given whats been said here about default settings and my ealrier post about having to go back because of excessive dust I could conclude that this camera may have been sold and returned

hmmmm


Despite all the bantering,.. :D

I think you have found the most likely root to the problem! :)

I wonder if the camera was returned "for grainy pics" because of the ISO 3200 setting,.. ? ? ? ?

That would be ironic.