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06-02-2010, 04:04 AM   #1
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BBF Button do we have one on K7

Am watching a photography course and as usual all about Nikon and Cannon cameras and where all those buttons are, I have the Pentax K7 what is the equivilant to the BBF on our Pentax
Thank you

06-02-2010, 04:09 AM   #2
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Yes, it is a button marked AF that you can use to auto focus. You can also set this button to cancel auto focus if you want. I personally like separating the auto focus from the shutter button, but different people differ on the subject.
06-02-2010, 04:12 AM   #3
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Thank you so much for answering so quickly, when you say cancel auto focussing what does that mean, how do you focus then with manual or am I missing something
06-02-2010, 04:33 AM   #4
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To focus with AF turned off, you have to turn the focus ring on the lens itself to focus.

06-02-2010, 05:58 AM   #5
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You can set the AF button to cancel auto focus. This means if you still have the shutter button to focus on a half press you can cancel the auto focus with the AF button pressed. This works well if you are shooting certain sports. You half press the shutter to focus on a player. Once you have your focus set, you hold down the AF button. If any one crosses between the camera and your focus point the camera won't refocus.
06-02-2010, 07:12 AM   #6
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I've been using 'Cancel AF' for a while--while holding the button down it is as if you quickly changed the AF/MF switch to MF. Particularly useful with a quick-shift lens or when you're having a hard time getting & keeping AF lock. When button is held, you'll see the 'MF' indicator illuminate in the viewfinder. I usually prefer to keep the engage AF on half-press enabled so I a) don't forget to AF and b) camera behaves more normally if I hand it to someone else to shoot.

This setting has no effect when using Live View--still engages contrast-detect AF.
06-02-2010, 09:59 AM   #7
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having auto focus on half press shutter is crap imo, it should only do that in green mode by default.

i use af button for af, and you can press and hold af while shooting too.
06-02-2010, 10:12 AM   #8
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QuoteOriginally posted by WerTicus Quote
having auto focus on half press shutter is crap imo, it should only do that in green mode by default.
I can't find it right now, but there was a poll in this forum last year asking what method people use to focus. It seems about 80% of respondents disagree with you, and I'm one of them.

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