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Author Topic: 500mm f/4.5 focusing help?!?!?  (Read 5262 times)

Mt Spokane Photography

  • Canon EF 5-1500mm f/1.0L IS
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Re: 500mm f/4.5 focusing help?!?!?
« Reply #15 on: August 17, 2012, 09:20:46 PM »
I focused on the word "mixed" and so far this looked the best of all the other adjustments
Your AFMA method is a formula for disaster.  Focusing on a book that way, the camera might grab anyone of the horizontal lines. 
Use a target designed to make sure that you are forcing the camera to autofocus exactly where you want it to.
Using software like Reikan FoCal is far better, but at least use something like this.  Its free!
http://regex.info/blog/photo-tech/focus-chart
 
Note how the center horizontal line is isolated so the camera can only lock onto the one place.  There is a lot of other good info there as well.  Proper setup and exact perpendicularity to the target is a must.

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Re: 500mm f/4.5 focusing help?!?!?
« Reply #15 on: August 17, 2012, 09:20:46 PM »

DMITPHOTO

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Re: 500mm f/4.5 focusing help?!?!?
« Reply #16 on: August 20, 2012, 07:06:06 PM »
I focused on the word "mixed" and so far this looked the best of all the other adjustments
Your AFMA method is a formula for disaster.  Focusing on a book that way, the camera might grab anyone of the horizontal lines. 
Use a target designed to make sure that you are forcing the camera to autofocus exactly where you want it to.
Using software like Reikan FoCal is far better, but at least use something like this.  Its free!
http://regex.info/blog/photo-tech/focus-chart
 
Note how the center horizontal line is isolated so the camera can only lock onto the one place.  There is a lot of other good info there as well.  Proper setup and exact perpendicularity to the target is a must.

Thanks for the link

canon rumors FORUM

Re: 500mm f/4.5 focusing help?!?!?
« Reply #16 on: August 20, 2012, 07:06:06 PM »