Which Canon focus screen for using manual lens?

tiziano · 5th of March 2006 (Sun)

Hi, I have an EOS 3, which will allow to change the focus scree. I just bought a bunch of vintage manual lens. I was thinking of purchasing one additional focus screen, to facilitate manual focusing. I found these two: Ec-B and Ec-L. Which one should I buy, is it difficult to change it, and, will autofocus still work with EF lens?
Thanks!

foxbat · 5th of March 2006 (Sun)

There will be no affect on auto-focus because the AF sensors are not behind the screen. The exposure sensors are behind the screen and it's possible that if you're using a slow lens where the split screen blacks out then you may have to compensate the auto exposure reading slightly. Obviously not a problem if you shoot full manual.

tiziano · 5th of March 2006 (Sun)

Thanks Foxbat!

5th of March 2006 (Sun)	#1
tiziano Senior Member Join Date: May 2005 Location: Italy, Rome Posts: 1,445 IMAGE EDITING OK	Which Canon focus screen for using manual lens? Hi, I have an EOS 3, which will allow to change the focus scree. I just bought a bunch of vintage manual lens. I was thinking of purchasing one additional focus screen, to facilitate manual focusing. I found these two: Ec-B and Ec-L. Which one should I buy, is it difficult to change it, and, will autofocus still work with EF lens? Thanks! __________________ Tiziano Gear list Last edited by tiziano : 5th of March 2006 (Sun) at 06:14.

5th of March 2006 (Sun)	#2
foxbat Goldmember Join Date: Jan 2005 Location: Essex, UK. Posts: 2,425	Re: Which Canon focus screen for using manual lens? There will be no affect on auto-focus because the AF sensors are not behind the screen. The exposure sensors are behind the screen and it's possible that if you're using a slow lens where the split screen blacks out then you may have to compensate the auto exposure reading slightly. Obviously not a problem if you shoot full manual. __________________ Andy Brown; South-east England. Canon, Sigma, Leica, Zeiss all on Canon DSLRs. My Gallery. Gear here.

5th of March 2006 (Sun)	#3
tiziano Senior Member Join Date: May 2005 Location: Italy, Rome Posts: 1,445 IMAGE EDITING OK	Re: Which Canon focus screen for using manual lens? Thanks Foxbat! __________________ Tiziano Gear list

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