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Canon 7D Auto ISO or not?

post #1 of 12
Thread Starter 
Hi everything, well i am trying to get out of auto/P mode and i been setting my cam in Av mode to shoot, but my question is can i still use Auto ISO for this mode? is that ok or i should be mainly setting my own ISO? this goes for lanscape or portraits mainly for everything.
Edited by -javier- - 3/25/12 at 10:26pm
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post #2 of 12
Do everything manual

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post #3 of 12
You should be on M mode for all subjects that are either slow moving, or not moving at all (Portraits/Landscapes)

AV mode for faster moving subjects (Birds/Sports)

Set your ISO as low as you can before your shutter speed starts to becomes to slow - This applys to either AV or M mode.

Quote:
Originally Posted by adamkatt View Post

Do everything manual
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Well, posts like this won't help you achieve your goal. Because that is about as much help as a poke to the eye.
Edited by swindle - 3/25/12 at 10:29pm
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post #4 of 12
For example: The other weekend it was my daughters birthday. We went to the park in town, it was a awesome day. Very sunny. Took some friends and family.

Now - Instead of contending with my camera for correct exposure in continually changing light levels on continuously moving subjects, I set myself up for the day like this.

AV Mode:

F/8.0 - The lens I was using is sharp at this piont, I like the results

ISO 400 - High enough to keep shutter speeds at a comfortable point, but won't introduce much visible noise

SV - Jumped around, from anywhere to 400ish right up to 4000ish, depending on light levels.

I got pictures like this (Non of which are particularly good subject matter or composition, but just results example)

uzrsmtwz.rgm.jpg

q0s4qcfh.3jj.jpg

2olgxybk.jwy.jpg

cwtecpkd.cfn.jpg

jkv52fcj.rq0.jpg

Remember, I also shoot with a 7D, so it should hopefully give you a good idea of potential results.
Edited by swindle - 3/25/12 at 10:44pm
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post #5 of 12
Use auto if you like, manual just gives you more control. I like control. I use manual only and adjust settings as needed...it really isn't that tough. LOL
post #6 of 12
Quote:
Originally Posted by Sean Webster View Post

Use auto if you like, manual just gives you more control. I like control. I use manual only and adjust settings as needed...it really isn't that tough. LOL

He did say in OP that he was trying to get out of AUTO...

But yeah, its not to hard to get ones head around the triangle.
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post #7 of 12
For the most part it doesn't matter what settings or what camera you use, as long as you get the shot.

I pretty much completely agree with swindle. I personally prefer shooting only in Manual (M) myself, but that is only because I can usually eyeball which ISO I would need on the fly, that only comes with experience for the most part. That being said, there are professional photographers that use Aperture Priority (Av) mode all the time, sometimes you just cannot be bothered to fiddle around with shutter speeds if you know how it will automatically set it based on the light conditions, iso settings, etc.

Yes you can manually set the ISO speed in Aperture Priority (Av) mode, if this feels a bit too daunting, there is no shame in using auto ISO until you get a handle for it by looking over your pictures/seeing what ISO settings it is setting it to. Generally as a rule of thumb (as others have mentioned) you want to get as low an ISO setting as possible, lower ISO = less image grain/noise.

Remember, all that matters is getting the shot, people who tell you to suck it up and use manual have a lens too far up their bums tongue.gif
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post #8 of 12
i agree that it is important to learn about shooting manual mode so you can fully control exactly what you want in your picture but that doesnt mean that once you are able to shoot manual you have to always shoot it. aperture priority is extremely useful and saves from the stress of trying to adjust exposure while someone might be waiting for you to take their picture. while at a track and field event an athlete called my name from about 12-15feet away while i was shooting and asked for a picture of her with a friend so i turned and zoomed in a little, i am not going to switch to M mode just because they are standing still and adjust my settings and make them wait. i was already in Av mode so i snapped 1 shot and it was good and went back to what i was doing.

if you are taking photos outdoors i might be easier to shoot priority modes to save with fiddling with settings because the exposure changed because of shadows or clouds that moved right as you take your shot. while shooting in Manual is great and i usually am set to manual mode i personally dont always shoot in Manual. in aperture priority you have control over 2 of the 3 exposure settings which is still full control over how the image works.

my advise is to continue shooting in Av if you want but dont shoot Auto ISO set it yourself for best results. cameras are not always the best at guessing what settings you want
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post #9 of 12
The only real downfall for shooting auto ISO with the 7D is that if your meter is off and your image is under exposed, you run a real risk of running into noise issues when you try to correct the exposure after the fact. Not to say that its not able to be handled but as mentioned above if you can find an ISO ahead of time that will allow you to get adequate shutter speeds and decent exposures, that's definitely ideal.

That way, if you know you're needing let's say ISO 1000, you can bump it up to 1250 and overexpose the image slightly so when you fix in post, you're not (hopefully) creating a situation where you're potentially making noise worse.
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post #10 of 12
Thread Starter 
so let me get this str8 if at the f/8.0 i am getting 1/250 on the shutter speed andi want to increase it leaving changing from f/8.0 by increasing or decreasing the ISO manually ill get the shutter speed i want and whats there ISO helps in Av mode, can help and hurt due to noise level as well right>?
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