3rd wheel

Just a thought for discussion, is it time for a 3rd control wheel for iso ?

I say this because using the 7D has me adjusting iso because I am confident in the results, so its really become an often used mix in the exposure values

Dunno about the 7D, but with the 5D you can invoke ISO in the viewfinder by pressing the Drive/ISO button and adjusting with the back wheel. This does not seem to work in the 20D.

mmmm dedicated ISO dial
doesn't seem like its going to happen anytime soon until Hi-ISOs get much more better.

On the MkIII, the SET button can be programmed to allow you to push it and turn the rear wheel to change ISO.

No such feature on the 7D?

Havent looked at the set button options for that, but I just use the iso button and top wheel, viewed through viewfinder yes, so no problem really, just that its something I find myself doing a lot more often now.

FlyingPhotog wrote in post #9131036
On the MkIII, the SET button can be programmed to allow you to push it and turn the rear wheel to change ISO.

No such feature on the 7D?

What advantage does pressing the SET button have over pressing the ISO button at the top of the camera for setting the ISO? Since you have to press a button either way, you're not really saving anything finger strokes as far as I can see.

@ oRGie: Personally, I can't see another dial being added just for setting the ISO when you can do the same thing by pressing a button and then turning a dial.

PacAce wrote in post #9131256
What advantage does pressing the SET button have over pressing the ISO button at the top of the camera for setting the ISO? Since you have to press a button either way, you're not really saving anything finger strokes as far as I can see.

The SET button is much easier to reach for some of us with short fat fingers. I'll rephrase. Actually, it is much easier to find.

Uh...I don't know if the 7D uses the same configuration as the 5DII, but on the 5DII the ISO button is about an inch away from the shutter button. It really doesn't take a ton of effort to hit the button and turn the wheel.

bacchanal wrote in post #9131374
Uh...I don't know if the 7D uses the same configuration as the 5DII, but on the 5DII the ISO button is about an inch away from the shutter button. It really doesn't take a ton of effort to hit the button and turn the wheel.

^ +1 although, on the 7D, they moved the "light" button from the extreme left position to a spot to the right of the ISO button so people used to the "old" arrangement of the buttons at the top need to get used to not pressing the "light" button when they really want to press the ISO button. But that's the same with the 5DII, too, though.

PacAce wrote in post #9131256
What advantage does pressing the SET button have over pressing the ISO button at the top of the camera for setting the ISO? Since you have to press a button either way, you're not really saving anything finger strokes as far as I can see.

I actually had it suggested by a sports shooter.

I don't have to take my finger off the shutter button and can change ISO on the fly if a subject moves from sun to shadow or vice versa.

FlyingPhotog wrote in post #9131459
I actually had it suggested by a sports shooter.

I don't have to take my finger off the shutter button and can change ISO on the fly if a subject moves from sun to shadow or vice versa.

That brings up another thing...on the 5DII (and I presume the 7D) the ISO is controlled by the main wheel, so you have to take your finger off the shutter button either way. I'm not sure if this is switchable via a custom function or whatever, but I don't believe it is on the 5DII.

bacchanal wrote in post #9131507
That brings up another thing...on the 5DII (and I presume the 7D) the ISO is controlled by the main wheel, so you have to take your finger off the shutter button either way. I'm not sure if this is switchable via a custom function or whatever, but I don't believe it is on the 5DII.

To be honest, I don't remember for sure if just the wheel, or both will control ISO on the 7D. Many of the functions can be done by either when active.

bacchanal wrote in post #9131507
That brings up another thing...on the 5DII (and I presume the 7D) the ISO is controlled by the main wheel, so you have to take your finger off the shutter button either way. I'm not sure if this is switchable via a custom function or whatever, but I don't believe it is on the 5DII.

The 7D and the 5DII doesn't allow you to reassign the ISO function so the discussion is moot as far as the 7D is concerned. But on the 1DIII, the ISO button, whether using the default button at the top of the camera or reassigned to the SET button, is single-purposed, i.e. not assigned for any other purpose, so you can use either the main dial or the quick dial to change the ISO. So I can see where using the SET button for changing ISO can be beneficial if one doesn't want to let off on shutter button. But then, that begs another question. In what situations would you always want to keep the index finger on the shutter button even when changing the ISO? It's not like it's hard to find and get back to once you move your finger off of it.

PacAce wrote in post #9131679
The 7D and the 5DII doesn't allow you to reassign the ISO function so the discussion is moot as far as the 7D is concerned. But on the 1DIII, the ISO button, whether using the default button at the top of the camera or reassigned to the SET button, is single-purposed, i.e. not assigned for any other purpose, so you can use either the main dial or the quick dial to change the ISO. So I can see where using the SET button for changing ISO can be beneficial if one doesn't let off on shutter button. But then, that begs another question. In what situations would you always want to keep the index finger on the shutter button even when changing the ISO? It's not like it's hard to find and get back to once you move your finger off of it.

Following a football player from sun to shade, I can swing the ISO from 100 to 400 without coming off the shutter.

I'm already shooting wide open for isolation so I have no more aperture and I can't slow the shutter speed or else I'll get motion blur so bumping the ISO is the answer. K?

FlyingPhotog wrote in post #9131738
Following a football player from sun to shade, I can swing the ISO from 100 to 400 without coming off the shutter.

I'm already shooting wide open for isolation so I have no more aperture and I can't slow the shutter speed or else I'll get motion blur so bumping the ISO is the answer. K?

OK. Whatever floats your fancy. (<== That's for using the rolling eyes on me since I did ask a legitimate question. :mrgreen