01-19-2012, 08:49 PM
[quote name='popo' timestamp='1327005359' post='15037']
Hmm... just had a look at similar shots with the same lens on a 600D, and I'm not seeing the variation. So I think we can say it is not the lens, but the body. This is further confirmed looking at some 50mm f/2 shots on the 450D where I get a similar effect.
Bear in mind I had the 450D modified for astro use, I wonder if that could be a contributing factor. If I get bored on the weekend I might open it up and check it. Maybe there's a big speck of dust in there causing the offset!
[/quote]
If that means removing/replacing the AA-filter, yes, that would well be possible <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='
' />.
However, where would you expect this dust speck to be, in that case? Between filter and sensor? Under the mount?
Kind regards, Wim
Hmm... just had a look at similar shots with the same lens on a 600D, and I'm not seeing the variation. So I think we can say it is not the lens, but the body. This is further confirmed looking at some 50mm f/2 shots on the 450D where I get a similar effect.
Bear in mind I had the 450D modified for astro use, I wonder if that could be a contributing factor. If I get bored on the weekend I might open it up and check it. Maybe there's a big speck of dust in there causing the offset!
[/quote]
If that means removing/replacing the AA-filter, yes, that would well be possible <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='
' />.However, where would you expect this dust speck to be, in that case? Between filter and sensor? Under the mount?
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 ....
