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.

Canon 50D/500f4 - autofocus custom function settings

Reply
 
Thread Tools Rate Thread
Old Wednesday 29th April 2009, 18:34   #1
torpid dormouse
Registered User
 
torpid dormouse's Avatar

 
Join Date: Feb 2009
Location: Ipswich
Posts: 2,445
Canon 50D/500f4 - autofocus custom function settings

Custom Function III - autofocus/drive. I usually have this set to 0 (focus search on). When I tried it on 1 (focus search off), I couldn't get it to focus at all; indeed it didn't even try - like the camera and lens didn't appear to talk to each other. I put the 17-85 lens on the 50D and it focussed fine but not with 500 f4. So I changed it back to 0. Wondered if anyone else had the same experience and could explain (very simply please!) why.
torpid dormouse is offline  
Reply With Quote
Old Friday 1st May 2009, 09:49   #2
Photovisions
Registered User

 
Join Date: Jan 2007
Location: Royston
Posts: 484
Because focus search is off, trying to focus on something that is at the other end of the scale usually fails as you have found out. I simply turn the focusing ring to achieve near focus and then there is no problem with the lens locking on. The advantage of this setting is that the lens doesnt wander when you are focusing on a BIF for example.
Adrian
Photovisions is offline  
Reply With Quote
Old Friday 1st May 2009, 19:26   #3
torpid dormouse
Registered User
 
torpid dormouse's Avatar

 
Join Date: Feb 2009
Location: Ipswich
Posts: 2,445
Thanks Adrian. Maybe I will try again, although at the time I couldn't get it to focus on near or far subjects, but maybe it was just stuck in the middle somewhere!
torpid dormouse 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
50d Autofocus/Drive search on/off for 400mm f5.6 Nikon Kid Canon 4 Saturday 28th March 2009 16:09
50D autofocus with Kenko 1.4 + 400 Lf5.6 Schulz-Benick Canon 13 Thursday 23rd October 2008 20:26
450d Custom Function (C Fn) AF Liveview Nikon Kid Canon 5 Sunday 27th July 2008 14:19
Canon 400 f4 v 500f4 graham catley Canon 27 Wednesday 26th October 2005 13:09

{googleads}

Fatbirder's Top 1000 Birding Websites

Help support BirdForum

Page generated in 0.12263894 seconds with 17 queries
All times are GMT. The time now is 21:56.