D90 back button focusing

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Doog

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Dougie
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I thought I'd give this technique a try out since the theory sounds like it has advantages. Unfortunately on my D90 the actual practicality is that I just cant get used to it at all. The button used is located to the right of the viewfinder which means it's just too high for finger placement and the button too small for easy manipulation. I'm sure the technique works great with other Nikons but not the D90 I'm afraid.:shake:
 
Hi

The AF on is exactly in the same spot for all Nikon cameras.I have a Nikon camera and I always use it.I found it difficult initially but now I use it all the time.Just use your thumb to press AF On button and use index finger for shutter release.It is a matter of practice.It is useful especially when taking photos of moving objects.
 
Really? That surprises me. I would have thought that newer, more advanced cameras would have improved this feature.:thumbsdown:
 
It sounds like you're trying to press the button on the rear of the camera with your finger?

Have you tried with your thumb?
 
Doog said:
Really? That surprises me. I would have thought that newer, more advanced cameras would have improved this feature.:thumbsdown:
Click to expand...

The D90 only has the AE-AF Lock button, the D300 / D700 / D800 I have used have both an AE-AF Lock button and a dedicated AF-ON button.

Looking at an image of the rear of the D90 I would imagine it is a fair stretch to get to the AE-AF lock button.

Where the camera has a dedicated AF-ON button it is located closer to the hand grip area, the thumb finds it fairly easily, and is comfortable in use.



.
 
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I had a D90 and had no problem, but it does take a while to get used to it.

There again some people just can't get used to it, so horses for courses really.

I know when I first started using BBF I took the camera one day and wondered why my camera wasn't focusing, tried different lenses, still no AF. Then I realised that I was trying to use the shutter button for focusing DOH! :lol:, pressed the AF-ON button 'Bingo' instant AF.:bonk:

Forgot to mention the Nikon D90 doesn't have the AF-On button. So, using f4 setting, you have to set up the AE/AF-lock button to act as the AF-On button
 
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I just check the Nikon D90 photo and it does not have a dedicated AF-ON button but AE-Al button can be configured to do the same job as mention in the post above.
 
I think Martyn's right. There's no dedicated AF-On button as such. It's the AF-L and AE-L button which needs to be activated in the menu that's pressed into use. The LV button on the D90 is the one which I keep pressing in error as that seems to be more easily found whilst keeping eye to finder.
 
Doog said:
I think Martyn's right. There's no dedicated AF-On button as such. It's the AF-L and AE-L button which needs to be activated in the menu that's pressed into use. The LV button on the D90 is the one which I keep pressing in error as that seems to be more easily found whilst keeping eye to finder.
Click to expand...

Don't give up, it just needs practice until it becomes second nature. :thumbs:
 
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