ISO Speed

[Woodman7]

Does anyone know of a resource on the web that helps you understand what the appropriate speed of film should be for shooting conditions.

I am especially interested what speed most of you use for indoor wedding or formal occasions. These tend to give me problems and I am getting darker pictures because I am shooting at to low of a film speed, I think.

Does anyone know if there is a feature on the 10D that will allow the ISO to automatically set its self, given the current conditions. When I shoot in the P mode it seems to always shoot in ISO 100.( Just wondering if there is a way to let the camera do the some of the thinking while I am learning.)

Thanks for the help generic rules of thumb on ISO speeds would really help me out.

[PacAce]

woodman7 wrote:
Does anyone know of a resource on the web that helps you understand what the appropriate speed of film should be for shooting conditions.

I am especially interested what speed most of you use for indoor wedding or formal occasions. These tend to give me problems and I am getting darker pictures because I am shooting at to low of a film speed, I think.

Does anyone know if there is a feature on the 10D that will allow the ISO to automatically set its self, given the current conditions. When I shoot in the P mode it seems to always shoot in ISO 100.( Just wondering if there is a way to let the camera do the some of the thinking while I am learning.)

Thanks for the help generic rules of thumb on ISO speeds would really help me out.

I guess you want to set the 10D in AUTO (little green box) mode. In P mode (or any of the other modes in the Creative Zone), YOU have to set the ISO setting yourself. I guess out of the box, it's preset to 100 and will stay that way until you change it.

On page 163 of the 10D manual, there's a table that shows you what functions are available in what modes.

[cubfan]

I shoot almost everything at asa 400 and I make 16x20's using high quality fine jpeg settings. The pictures are incredible and show no noticeable grain...much better than anything I've done with 35 mm. So stick with 400 until you get more into photography. ASA 100 will produce better pictures but you may introduce shaking at slower shutter speeds.

[cjtinkle]

I'm a complete newb to photography and my 10D, so I've read, and read and reread the manual. In any of the basic modes, Portrait, Landscape, etc; the camera chooses the ISO speed from 100-400 automatically except for the Sports mode which is set to 400, and the Portrait, which is fixed at 100.

[daveh]

When I shot film this was a question to really think about. I always wanted to shoot ASA 25 when possible, but I always had to worry about having a camera loaded up with ASA 25 and needing to take low (or even medium!) light shots. The only answer to this dilemma was multiple bodies.

With the 10D it's trivial. I always set it to 100 and if I get into a situation where that won't work, I simply turn a dial. Ahhh progress... :D

[rodbunn]

All I've tested proved to me that with a 550EX flash on the 10D, ISO100 doesn't work well. I have to use 200 or 400 ISO with the 550 (for wedding work).

Good luck,

Rod