Quote:
Originally Posted by badpets
Does this mean that it still focus shift a bit after stepping down from 2.0?
Does anyone has a Noct that focus accurately at all stops?
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Mine don't. Even after two trips to Solms. But it predictably frontfocuses with a ca 5cm at 1,0 and the senter of DOF shifts backwards - and widens, gradually when a smaller aparture is applied. It is close to impossible to focus it accurately at shorter distances. At least; my eyesight is not good enough.
I have the old and no longer produced Canon EF 50 mm 1,0L which I use on my 1Ds III. This one is impossible to focus manually with the focusing screens of D-SLR's of today. But the 1Ds III/EF 50 mm 1,0L combo also front focuses 'slightly' at full aparture - when using AF. And the DOF drifts backwards when stopped down. Which is due to physical laws.
Examples bellow:
1)
From the Canon combo - 1Ds III / EF 50 mm 1,0L
2)
From the Leica Combo - M8 / Noctilux
Both without any filters, but with exposures corrected to make the results similar.