How is Auto ISO these days?

boerewors wrote in post #15647681
surely youre using flash which is causing that? You could use HSS to allow the faster shutter speeds be useable.

I don't think so. 5D3 max sync speed is 1/200, he'd have to use HSS to GET to 1/250, then it would be unlimited. It has to be a custom function that limits the shutter speed.

The fits time I read the post I thought he was referring to flash sync speed too. I had to read it a second time before I realized there was no mention of flash.

6D auto ISO implementation is ditto same as in other canon systems talked above.

In apperture, shutter & manual modes, one can select both lower & upper iso limits. With flash the iso is 400 excepting P mode where in it is 1600.

TSchrief wrote in post #15647375
I am not sure, because I don't own a 5D3, but that makes no sense to me. I can use Auto-ISO on my 60D and select any shutter speed from 30 seconds to 1/8000. My guess is that there is a custom function that limits the shutter speed. If that is NOT the case, you are certainly doing something improperly.

EDIT: Even my T1i allowed any shutter speed in Auto-ISO. It just locked you at ISO 400 in manual mode, which actually was stupid. Manual mode is where auto-ISO is most useful.

Would love to know what I'm doing wrong, it's in the manual page 128, you can only select a max of a 1/250 shutter speed as your 'minimum' shutter speed for auto iso. Manual mode would of course make the most sense but no exposure compensation

Ben Rubinstein wrote in post #15649073
Would love to know what I'm doing wrong, it's in the manual page 128, you can only select a max of a 1/250 shutter speed as your 'minimum' shutter speed for auto iso. Manual mode would of course make the most sense but no exposure compensation

You confused everyone because you didn't state that you were trying to set a minimum shutter. Your post made it seem like the camera itself would not go over 1/250 no matter what.

The solution as I see it would be to shoot in M mode and set the shutter speed to whatever you need. If you need 1/1000, then what good does it do you to have the camera picking the value for you and shooting between 1/1000 and 1/8000? Just set it to 1/1000 and be done.

Then if you need auto metering, set ISO to A and the camera will set the ISO to center the meter.

This approach gets back to what I said in my first post in this thread, that M mode with auto ISO is the path to shooting at the lowest possible ISO in every shot when you are working in an auto-metered mode. In either Av or Tv there is a chance the camera will stop down (Tv) or use a faster shutter speed (Av) than you can live with while sticking to a higher ISO than is absolutely possible.

I have just shot a whole 2 week job with my 1D4 set in auto ISO and did not have to worry about moving from indoor shot to outdoor and it gave great results.

I looked at the manual. That is indeed, weird. 5D3 user's please comment.

Ben Rubinstein wrote in post #15647212
Like it a lot on my 5D3 but why the heck did they have to limit the max shutter speed to 1/250? Ok for shorter lenses but longer lenses shooting with 22 megapixels, that limit can begin to become a problem, especially for when you need to freeze action. Why would they have to limit it? What possible point could there be?

It's not a MAX shutter speed setting. It's a MIN shutter speed setting, e.g., the range will be whatever value you set, and faster. None of the settings there cut off the faster shutter speeds. In other words, it only sets the lower limit, not the upper limit. If you don't want any limits and would rather have the camera set any SS, set it to Auto.

Also, regarding flash use, a footnote in the manual says with flash photography, MIN shutter speed set in this menu setting will NOT be applied.

tgara wrote in post #15650271
It's not a MAX shutter speed setting. It's a MIN shutter speed setting, e.g., the range will be whatever value you set, and faster. None of the settings there cut off the faster shutter speeds. They only set the lower limit, not the upper limit. If you don't want any limits and would rather have the camera set any SS, set it to Auto.

Also, regarding flash use, a footnote in the manual says with flash photography, MIN shutter speed will NOT be applied.

Very nice feature.I wish, it is available in rebels as well. With this feature, I can always use Av mode and do EC instead of M mode. Changing Aperture on t3i is kinda tricky in M mode.

tgara wrote in post #15650271
It's not a MAX shutter speed setting. It's a MIN shutter speed setting, e.g., the range will be whatever value you set, and faster. None of the settings there cut off the faster shutter speeds. In other words, it only sets the lower limit, not the upper limit. If you don't want any limits and would rather have the camera set any SS, set it to Auto.

Also, regarding flash use, a footnote in the manual says with flash photography, MIN shutter speed set in this menu setting will NOT be applied.

Thanks, tgara. That makes a lot more sense than what I thought the original comment made. Is this useful on the 5D3? It seems kind of like the "shutter speed in Av while using flash" kludge. You know, set the camera on Av, but have it act like it is in P-mode. Useful, at times.

TSchrief wrote in post #15650446
Thanks, tgara. That makes a lot more sense than what I thought the original comment made. Is this useful on the 5D3? It seems kind of like the "shutter speed in Av while using flash" kludge. You know, set the camera on Av, but have it act like it is in P-mode. Useful, at times.

Well, like anything, it depends on how you are going to use this feature. I'm sure it's useful for some, since Canon included it. Basically, it keeps the SS from falling below a certain value. I can see how this could be helpful if you want to use automatic feautres but maintain a faster shutter speed range during certain situations where things such as lighting, field of view, subject distance, etc., could be changing quickly. To be honest, I have not tried this feature yet since I just got my 5D3 about 3 weeks ago, but I know it's there and what it does.

JeffreyG wrote in post #15649269
You confused everyone because you didn't state that you were trying to set a minimum shutter. Your post made it seem like the camera itself would not go over 1/250 no matter what.

The solution as I see it would be to shoot in M mode and set the shutter speed to whatever you need. If you need 1/1000, then what good does it do you to have the camera picking the value for you and shooting between 1/1000 and 1/8000? Just set it to 1/1000 and be done.

Then if you need auto metering, set ISO to A and the camera will set the ISO to center the meter.

This approach gets back to what I said in my first post in this thread, that M mode with auto ISO is the path to shooting at the lowest possible ISO in every shot when you are working in an auto-metered mode. In either Av or Tv there is a chance the camera will stop down (Tv) or use a faster shutter speed (Av) than you can live with while sticking to a higher ISO than is absolutely possible.

Manual doesn't have exposure compensation. End of story I'm afraid.

Ben Rubinstein wrote in post #15650692
Manual doesn't have exposure compensation. End of story I'm afraid.

It does if you turn off the auto-ISO. Here we go again.

Auto ISO is for fast shooting using in camera metering, if you have time to dial in settings in manual you have time to change ISO in other modes.

Ben Rubinstein wrote in post #15650868
Auto ISO is for fast shooting using in camera metering, if you have time to dial in settings in manual you have time to change ISO in other modes.

I guess you do not have one of the cameras that works this way, but if you read post #7 in this thread you will understand why this is not correct.

When you enable auto ISO on a 7D, 1D4 or 5D3 then M mode is not M mode anymore. Functionally it is aperture and shutter speed priority mode. And it does need exposure compensation.