Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
05-05-2016, 03:30 PM   #31
Site Supporter
jpzk's Avatar

Join Date: Jan 2009
Location: Québec
Photos: Gallery | Albums
Posts: 7,258
Original Poster
QuoteOriginally posted by audiobomber Quote
I don't see why back button focus will be useful. Its main purpose is a quick change from AF-S to AF-C. With the User mode set for AF-C, there's no need to switch back and forth with anything but the Mode dial.

I have a severe bias against BBF. It's unnatural for me. I've been using half-press for focus for many years. Now that I can switch from AF-C to AF-S on the mode dial, BBF has lost its advantage and kept its disadvantages.
Thanks Dan.

That's what I thought but it seems that some can get more (better) results using the AF back button: https://www.pentaxforums.com/forums/38-photographic-technique/236970-perfect-...everytime.html
but I too feel more comfortable using the shutter button .... more "natural" to me.
However, if this is going to help nail the focus better, I might as well give it a go ! If I don't like it, it'll be easy enough to revert to the other way.

So, I was just wondering if this back AF button configuration was saved in the User mode ... or not?

05-05-2016, 04:29 PM - 1 Like   #32
Loyal Site Supporter
clackers's Avatar

Join Date: Jul 2013
Location: Melbourne
Photos: Albums
Posts: 9,024
QuoteOriginally posted by audiobomber Quote
I don't see why back button focus will be useful. Its main purpose is a quick change from AF-S to AF-C.
But that's not its main purpose.

It separates focussing from shot-taking, even in AF-S.

After you've half-button pressed, got the shot, you release the button but now have to go through the focus routine again.

Not with BBF - it's right where you left it.
05-05-2016, 06:00 PM   #33
Pentaxian
audiobomber's Avatar

Join Date: May 2008
Location: Sudbury, Ontario
Photos: Albums
Posts: 6,686
QuoteOriginally posted by clackers Quote
But that's not its main purpose.

It separates focussing from shot-taking, even in AF-S.

After you've half-button pressed, got the shot, you release the button but now have to go through the focus routine again.

Not with BBF - it's right where you left it.
I do the same thing in AF-S with CF&R. No advantage.

In AF-C, I absolutely want to marry focus with shot-taking. That is critical with Pentax tracking. if your first shot misses focus, you're screwed, the whole sequence will be off.
05-05-2016, 10:28 PM   #34
Loyal Site Supporter
clackers's Avatar

Join Date: Jul 2013
Location: Melbourne
Photos: Albums
Posts: 9,024
QuoteOriginally posted by audiobomber Quote
I do the same thing in AF-S with CF&R.
No, you don't, Audiobomber.

You have to keep your finger half-pressed on the shutter button - no slipping, no interruption - or you can't take the second shot. Doesn't happen with BB.

QuoteOriginally posted by audiobomber Quote
In AF-C, I absolutely want to marry focus with shot-taking. That is critical with Pentax tracking. if your first shot misses focus, you're screwed, the whole sequence will be off.
??

Why is the shutter button more likely to get the first shot in an AF-C burst in focus than the back button?

05-06-2016, 05:09 AM   #35
Pentaxian
audiobomber's Avatar

Join Date: May 2008
Location: Sudbury, Ontario
Photos: Albums
Posts: 6,686
QuoteOriginally posted by clackers Quote
Why is the shutter button more likely to get the first shot in an AF-C burst in focus than the back button?
Finishing the half-press needs no thought or action except to move my index finger down a fraction of an inch. Coordinating a second button and another digit with the shutter release is more likely to miss IMO. It's definitely more likely to miss for me, because half-press is ingrained. I've done it for years, it's become an automatic reaction.

I have no objection to people using BBF if it works for them. What I object to is that people still think it is an advantage for action shooting. I grant that was true with previous Pentax bodies, but ever since the K-3, User modes have surpassed the advantage that BBF had, which is to quickly change from AF-S to AF-C. With a user mode, I can change focus method and many other things with a couple of clicks on the Mode dial.

Last edited by audiobomber; 05-06-2016 at 06:44 AM.
05-06-2016, 05:31 AM   #36
Loyal Site Supporter
clackers's Avatar

Join Date: Jul 2013
Location: Melbourne
Photos: Albums
Posts: 9,024
QuoteOriginally posted by audiobomber Quote
. It's definitely more likely to miss for me, because half-press is ingrained. I've done it for years, it's become an automatic reaction..
Okay. That is, as you say, an individual thing - talking about the photographer rather than the camera.

Last edited by clackers; 05-06-2016 at 01:17 PM.
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
af, af-c, dslr, focus, k-3, k3, pentax k-3, post, shots, spot, tc, thread, time
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Request feature: AF point select using a button on the body and one scroll dial howieb101 Pentax K-1 14 04-01-2016 02:20 AM
Linking Spot Metering to AF Point radeg Pentax K-5 4 11-26-2012 06:05 AM
K-5 autofocus accuracy varies by AF point Designosophy Pentax K-5 22 01-19-2012 08:32 AM
K-5 Select Af point in live view telfish Pentax K-5 5 10-21-2010 11:38 AM
Center AF point accuracy compared to the others GrinMode Pentax DSLR Discussion 4 04-22-2010 10:11 PM



All times are GMT -7. The time now is 03:11 PM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top