06-23-2010, 08:38 AM
[quote name='genotypewriter' date='23 June 2010 - 04:36 AM' timestamp='1277260566' post='658']
One thing I didn't mention before was the differences introduced by the thickness of the IR filter that replaced the original IR cut filter. The original filter was a multi-layered one that also had the two AA filters and the sensor cleaning layer. The IR filter that was put on is most probably thinner, because it's a specially made on-sensor filter (rather than a glass filter cut to size).
The good news is that I don't need the VF to work for all the lenses. Just my 200 because the rest can AF without a problem. All that needs to be done is make the focusing screen distance consistent with the sensor distance.
I'm not sure how diopter adjustments can help lens focus... the lens image is already made on the focusing screen and any diopter adjustments will only affect how the eye focuses on the focusing screen, right?
GTW
[/quote]
That last remark was for accurate MF, not for AF <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='
' />. The differences between correct MF for each lens could be mitigated by different diopter settings for each lens. That's all I ment here. A theoretical more than a practical exercise <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='' />.
Kind regards, Wim
One thing I didn't mention before was the differences introduced by the thickness of the IR filter that replaced the original IR cut filter. The original filter was a multi-layered one that also had the two AA filters and the sensor cleaning layer. The IR filter that was put on is most probably thinner, because it's a specially made on-sensor filter (rather than a glass filter cut to size).
The good news is that I don't need the VF to work for all the lenses. Just my 200 because the rest can AF without a problem. All that needs to be done is make the focusing screen distance consistent with the sensor distance.
I'm not sure how diopter adjustments can help lens focus... the lens image is already made on the focusing screen and any diopter adjustments will only affect how the eye focuses on the focusing screen, right?
GTW
[/quote]
That last remark was for accurate MF, not for AF <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='
' />. The differences between correct MF for each lens could be mitigated by different diopter settings for each lens. That's all I ment here. A theoretical more than a practical exercise <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 ....