Join for FREE
It only takes a minute!
Discover the ZEISS Digital Nature Hub

Welcome to BirdForum.
BirdForum is the net's largest birding community, dedicated to wild birds and birding, and is absolutely FREE! You are most welcome to register for an account, which allows you to take part in lively discussions in the forum, post your pictures in the gallery and more.

40D custom Functions IV "AF-ON"

Reply
 
Thread Tools Rate Thread
Old Saturday 29th November 2008, 03:10   #1
Julian H
Registered User
 
Julian H's Avatar

 
Join Date: Jan 2006
Location: New Haven, Connecticut, USA
Posts: 669
40D custom Functions IV "AF-ON"

Just upgraded to a 40D and despite doing some browsing, can't seem to get my custom functions set the way I'd like.

Here's my wish:

To be able to switch AF from the shutter to the "AF-ON" button.
If I keep this depressed, the "AF-ON" switch behaves like AI Servo basically. Shutter takes the picture.

When I let go of the "AF-ON", I'd like AF to lock on my subject, allowing me to recompose and depress the shutter to take the shot.

This way I get to use both AI Servo and "one shot" focussing without the hassle of switching the modes via the dials.

I know this can be done on other models, yet despite some trying, I cna't seem to get it to work?

Anyone configured their camera's CF buttons to achieve this, and if so, a detailed list of the settinngs would be good.

Thanks in advance,

Julian
__________________
Julian Hough
http://naturescapeimages.wordpress.com
Julian H is offline  
Reply With Quote
Old Saturday 29th November 2008, 05:58   #2
Roy C
Occasional bird snapper
 
Roy C's Avatar

 
Join Date: Feb 2005
Location: Barnstaple,North Devon,UK
Posts: 16,340
Quote:
Originally Posted by Julian H View Post
Just upgraded to a 40D and despite doing some browsing, can't seem to get my custom functions set the way I'd like.

Here's my wish:

To be able to switch AF from the shutter to the "AF-ON" button.
If I keep this depressed, the "AF-ON" switch behaves like AI Servo basically. Shutter takes the picture.

When I let go of the "AF-ON", I'd like AF to lock on my subject, allowing me to recompose and depress the shutter to take the shot.

This way I get to use both AI Servo and "one shot" focussing without the hassle of switching the modes via the dials.

I know this can be done on other models, yet despite some trying, I cna't seem to get it to work?

Anyone configured their camera's CF buttons to achieve this, and if so, a detailed list of the settinngs would be good.

Thanks in advance,

Julian
Hi Julian, I have this set-up and use it all the time for birds.
Enable the custom function C.Fn IV-1 in the set-up menu I use option 2.

set the lens to AF and the camera to AI servo and providing you have a full time manual focusing lens you have the best of all worlds:
a) Keep your thumb on the button and you have AI servo
b) Hit the button and release and you have a one-shot AF
c) by not touching the AF on button you have manual focusing.

Hope this helps.
Roy C is offline  
Reply With Quote

BF Supporter 2007 Support BirdForum With A Donation

Old Sunday 30th November 2008, 03:44   #3
Julian H
Registered User
 
Julian H's Avatar

 
Join Date: Jan 2006
Location: New Haven, Connecticut, USA
Posts: 669
Roy,

Thanks for that! I'll give it a whirl..

best,

J
__________________
Julian Hough
http://naturescapeimages.wordpress.com
Julian H is offline  
Reply With Quote
Old Monday 1st December 2008, 01:13   #4
Mahsleb
Registered User
 
Mahsleb's Avatar

 
Join Date: Jan 2007
Location: Suffolk
Posts: 46,820
Quote:
Originally Posted by Roy C View Post
Hi Julian, I have this set-up and use it all the time for birds.
Enable the custom function C.Fn IV-1 in the set-up menu I use option 2.

set the lens to AF and the camera to AI servo and providing you have a full time manual focusing lens you have the best of all worlds:
a) Keep your thumb on the button and you have AI servo
b) Hit the button and release and you have a one-shot AF
c) by not touching the AF on button you have manual focusing.

Hope this helps.
Thanks Roy this has helped me too
While in for repair my camera got reset to default
and I couldn't remember how to set it back again

Cheers
__________________
Tony
Mahsleb is offline  
Reply With Quote

BF Supporter 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 Support BirdForum With A Donation

Old Sunday 7th December 2008, 12:08   #5
Tannin
Common; sedentary.
 
Tannin's Avatar

 
Join Date: Jun 2003
Location: Ballarat, Australia
Posts: 1,559
There are quite a few ways to set up the AF on Canon cameras, just in case anyone is reading this thread and pondering what will suit them best, there is a third good alternative.

If you've tried back-button focus and see some advantage to it but, on balance, dislike not having auto-focus available on the shutter button, try [i]reverse back-button focus[/b]. Through the same custom function menu, you can set the back button to act as an auto-focus STOP. You AF as usual with a half-press, but whenever you want to freeze the focus and reframe (or freeze it for any other purpose) you simply squeeze with your thumb. For example, focus on the eye, squeeze, then reframe and shoot. When you want to go back to normal auto-focus, just let go. The same applies if you want manual focus for a moment: you return to normal auto-focus mode as soon as you lift your thumb.

(Which is the best method of controlling focus? None of the above, or all of them - just whichever way suits you best. Try all three and decide for yourself.)

(Sorry for going a little off-topic.)
Tannin is offline  
Reply With Quote
Advertisement
Reply


Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Reviews of "To See Every Bird on Earth" and "A Supremely Bad Idea" jedigrant Books, Magazines, Publications, Video & DVD 3 Saturday 13th December 2008 19:53
custom functions paul_j_c2000 Canon 0 Thursday 30th November 2006 06:51
What makes a person a "naturalist" rather than a "nature lover"? Terry O'Nolley Birds & Birding 9 Friday 16th September 2005 11:42
10D Custom Functions Merop Canon 5 Friday 6th August 2004 22:30
"Lifers" - usually on a "birding trip" or by chance when you least expect it? pattianne Your Birding Day 17 Wednesday 4th February 2004 01:23

{googleads}

Fatbirder's Top 1000 Birding Websites

Help support BirdForum

Page generated in 0.10108900 seconds with 19 queries
All times are GMT. The time now is 19:26.