5d auto ISO on manual

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joescrivens

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Was shooting in Av the other day and the shutter kept dropping to 1/30 and 1/40 - I don't have the steadiest hands and I really prefer not to go below 1/60. So I kept having to up the ISO to make sure it didn't drop below it.

Then I thought, surely I can shoot in manual, stick the shutter on 1/60 and put the ISO on auto and the camera will change it for me ... right?

Hmmm, for some reason in manual when I put the ISO on A it will only ever choose an ISO of 400 - any idea why? whether it was over or under - always 400
 
I think 'auto ISO' is just fixed at 400 when using manual mode on the 5DII

I guess it's what it says it is - manual mode - it's up to you to choose it.
 
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Yep - it's one of the big bugbears about the 5D Mk II - auto-iso doesn't work in Manual.

In one sense this is natural, as the very definition of manual implies that you should set everything manually.

On the other hand, it can be a very useful setup to have fixed aperture and shutter speed with a variable iso so it's strange that Canon didn't include it.

FWIW, my view is that there should be another mode - so we'd have P-A-S-I-M-C1-C2-C3 (so replacing the surely never used green square with 'I' mode)

I'm sure some Nikon-users will be along soon to point out that it works just fine on most of their range ;)
 
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For some strange and un-fathomable reason this is how Canon have implemented Auto ISO in manual mode :shrug: - and its a PITA
 
AutoISO on my 1DIV works in manual - I just wish I could then dial in exposure compensation as you actually lose all control. But its a nice way of controlling aperture and shutter speed in variable lighting conditions.
 
Ah well, I guess the 5d Mark III whenever it surfaces will probably have a working autoISO. Although it does seem like something which could be enabled in a firmware update.
 
I think the 1D models and also the 7D can have 'auto ISO' when shooting in manual mode.
 
grum said:
I believe this is something where Nikon wins.
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thanks for that! kind of unhelpful to me, but thanks anyway :lol:

that is a pain in the ass, pretty sure it worked on my 7d, anyone confirm?
 
grum said:
I believe this is something where Nikon wins.
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it is somewhere Nikon cameras behave as you'd expect, but auto ISO in manual? surely the reaason for shooting manual is to get creative with exposures or keep complete control of it. As soon as you use auto iso you lose that
 
boyfalldown said:
it is somewhere Nikon cameras behave as you'd expect, but auto ISO in manual? surely the reaason for shooting manual is to get creative with exposures or keep complete control of it. As soon as you use auto iso you lose that
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you could think of it that way, but i think of it more as a workaround for a mode that doesn't exist.

i.e. when you want the shutter not to go lower than a certain amount but you want total control of your aperture, using an auto iso would be what you wanted here.

Ideally there should be a mode in Av that you can dial in a minimum shutter speed - this would solve it. But since that doesn't exist using manual for the desired effect is the only option - or not on the 5d mk 2
 
joescrivens said:
you could think of it that way, but i think of it more as a workaround for a mode that doesn't exist.

i.e. when you want the shutter not to go lower than a certain amount but you want total control of your aperture, using an auto iso would be what you wanted here.

Ideally there should be a mode in Av that you can dial in a minimum shutter speed - this would solve it. But since that doesn't exist using manual for the desired effect is the only option - or not on the 5d mk 2
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understand - that does exist on the Nikons too, (just to act all smug) where you can tell the auto iso not to let the shutter drop below a certain speed and then use it like this in A mode which does make sense to me.
 
boyfalldown said:
understand - that does exist on the Nikons too, (just to act all smug) where you can tell the auto iso not to let the shutter drop below a certain speed and then use it like this in A mode which does make sense to me.
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oh cool, now that is cool and something I would use all the time!
 
It is handy to have though.

Set the desired Aperture and Shutter speed you require and then Auto ISO.

You can track a moving object - the ISO will adjust as you pan through changing light.

I guess it comes in handy for 'action' so could be why 1d and 7d have it but 5DII doesn't.
 
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dinners said:
It is handy.

Set the desired Aperture and Shutter speed you require and then Auto ISO.

You can track a moving object - the ISO will adjust as you pan through changing light.

I guess it comes in handy for 'action' so could be why 1d and 7d have it but 5DII doesn't.
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it's also handy when you have shaky hands and don't want it to drop below a certain number - which is model independent!
 
Canon's 'Auto ISO limitation' allows you to set a limit whereby you select a maximum ISO speed above which the camera will not go. Think it's on 1D models but is now on the 550D and 60D.
 
dinners said:
Canon's 'Auto ISO limitation' allows you to set a limit whereby you select a maximum ISO speed above which the camera will not go. Think it's on 1D models but is now on the 550D and 60D.
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i can see that being useful too, just not for the scenario I was referring to, it's shutter speed limitation i want! :)
 
Yes, the Nikon implementation of auto ISO is clearly better than what my Canons do, even though I mostly shoot with the 7D and it has probably the best Canon auto ISO.

I once badgered a Canon rep about it and he told me to use the shooting modes like Sport etc.. which don't even exist on my cameras :cuckoo: Not that I'd use them if they did..

But I do use Auto ISO on Manual with the 7D.. not much but sometimes when I'm lazy :)
 
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