06-11-2013 02:21 PM
Has anyone had any problems with the Microfocus adjustment point drifting dependent on the temperature?
This happens on my 600mm lens alot.
06-13-2013 06:22 PM
How do you tell the problem is temperature related. Micro adjustment is a electroinic adjustment relating to the lens, and the photo sensor. Where are you seeing the change, in the micro adjustment section of the cameras menu? Living in Louisiana, in deep humidity, and high temperatures daily I've not seen this with any of my lenses. I use FoCal Pro for my adjustments, on a Canon 50D. How are you checking your lenses for front/back focus?
Bill
06-19-2013 12:25 PM
At times when it gets warmer outside I must reduce the AF microadjust as much as 4-5 in order to keep the center of my DOF
"Depth of field" in the same place. When cooler weather come in I have to adjust it back out by the same amount. The actual number setting doesn't drift It stays set where you adjust it too.
06-19-2013 09:31 PM
04/16/2024: New firmware updates are available.
RF100-300mm F2.8 L IS USM - Version 1.0.6
RF400mm F2.8 L IS USM - Version 1.0.6
RF600mm F4 L IS USM - Version 1.0.6
RF800mm F5.6 L IS USM - Version 1.0.4
RF1200mm F8 L IS USM - Version 1.0.4
03/26/2024: New firmware updates are available.
EOS 1DX Mark III - Version 1.9.0
12/05/2023: New firmware updates are available.
EOS R6 Mark II - Version 1.3.0
07/31/2023: New firmware updates are available.
Canon U.S.A Inc. All Rights Reserved. Reproduction in whole or part without permission is prohibited.