Back button focus and grips

[JClishe]

I'm just curious, if you shoot Canon and have your focus mapped to the AF-ON button, what do you do when shooting in vertical orientation when using a grip?

 

[KmH]

Nikon grips have a second AF-On button right there on the back of the vertical grip for use in the vertical orientation.

I just checked, the Zeikos vertical grip for a D300 ha the second AF-On button also.

Edit: Looks like vertical grips for Canon have a second AF-ON button too. Amazon.com: Zeikos ZE-CBG7D Battery Power Grip for Canon 7D Camera: Camera & Photo

 

[GooniesNeverSayDie11]

My Canon grip on my 7D has the back AF button.

 

[JClishe]

I didn't realize that some grips had the AF-ON button. I wasn't using back button focus when I bought my Canon grip so I didn't even pay attention. Although unfortunately it looks like the Zeikos 50D grip doesn't have an AF-ON button either.

 

[Overread36]

On the 7D I can remap the AF to the * button instead/inaddition to the AF-on button - maybe you could do the same on your 50D. That at least gets you backbutton AF when using the grip.