Author Topic: Replacing focusing screen on 5DIII  (Read 1467 times)

axelcine

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  • Hi, I'm Axel, editor, journalist and photographer
Replacing focusing screen on 5DIII
« on: April 27, 2018, 07:44:35 PM »
Fast and precise manual focusing is paramount to getting the best results from the manual Samyang lenses (and old but excellent lenses from other suppliers, ie. my belowed Nikkor-S 50mm 1.4.) But with the focusing screens supplied with modern digital cameras fast focusing can be a daunting task, especially if the light conditions are less than ideal. I have replaced the focusing screens in my two 5D mark III's with the EC-B focusing screen originally designed for the 5D mark II. The EC-B has a split-image field in center of the screen - and it works extremely well with lenses better than f3.5-4. The 5DIII is not primarily designed for exchangeability of the focusing screen, but the procedure is really straight forward and very simple.
EOS RP, 5dIII.113/Batt.grip, 5dIII.123, 700d/Batt.Grip/VF4 viewfinder + a truckload of new and older Canon L, Sigma and Tamron glass

D_Odell

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Re: Replacing focusing screen on 5DIII
« Reply #1 on: May 12, 2018, 09:33:34 PM »
Fast and precise manual focusing is paramount to getting the best results from the manual Samyang lenses (and old but excellent lenses from other suppliers, ie. my belowed Nikkor-S 50mm 1.4.) But with the focusing screens supplied with modern digital cameras fast focusing can be a daunting task, especially if the light conditions are less than ideal. I have replaced the focusing screens in my two 5D mark III's with the EC-B focusing screen originally designed for the 5D mark II. The EC-B has a split-image field in center of the screen - and it works extremely well with lenses better than f3.5-4. The 5DIII is not primarily designed for exchangeability of the focusing screen, but the procedure is really straight forward and very simple.
Interesting, was there a guide that you followed? Took any pictures? Thanks!
5D3 (OLPF removed) :: 1.1.3 :: Canon FD L Serie