02-01-2012, 04:18 PM
[quote name='Frank' timestamp='1328108015' post='15376']
Thank you again, Wim. I think I understand it now: what makes a laser matte screen shine is its very fine matting, not its focus confirmation mechanism; this very fine matting lets you see through the VF a DoF close to the true DoF. While for a normal or split prism screen you see through the VF a DoF bigger than the true DoF (for aperture larger than F5.6), which leads to incorrect or inaccurate focusing with MF.
Best regards,
Frank
[/quote]
That's correct.
And because of this behaviour, it is very easy to use manual focus with such a screen. Well, relatively easy <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='
' />.
Focus confirmation is as good or as bad as with any interchangeable screen, although it generally is easier to see how spot on one is <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='' />.
Kind regards, Wim
Thank you again, Wim. I think I understand it now: what makes a laser matte screen shine is its very fine matting, not its focus confirmation mechanism; this very fine matting lets you see through the VF a DoF close to the true DoF. While for a normal or split prism screen you see through the VF a DoF bigger than the true DoF (for aperture larger than F5.6), which leads to incorrect or inaccurate focusing with MF.
Best regards,
Frank
[/quote]
That's correct.
And because of this behaviour, it is very easy to use manual focus with such a screen. Well, relatively easy <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='
' />.Focus confirmation is as good or as bad as with any interchangeable screen, although it generally is easier to see how spot on one is <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='
' />.Kind regards, Wim
Gear: Canon EOS R with 3 primes and 2 zooms, 4 EF-R adapters, Canon EOS 5 (analog), 9 Canon EF primes, a lone Canon EF zoom, 2 extenders, 2 converters, tubes; Olympus OM-D 1 Mk II & Pen F with 12 primes, 6 zooms, and 3 Metabones EF-MFT adapters ....