40mm manual focus and speed

Started Jun 24, 2012 | Discussions thread
Chev Chelios
Junior MemberPosts: 47
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relative focus speed
In reply to BlueInTheShadow, Jun 24, 2012

Compared to my 50L the focus speed of the 40mm seems about the same. But compared to my 28/1.8 and 50/1.8II the focussing of the 40mm is defintely slower (but not annoyingly so).

At around 3m focusing the internal barrel barely sticks out (i.e. all your points would be from MFD to 3m). And since you have to half press the shutter in order to pre-focus anyway, I wouldn't bother with the pre-marking idea. Mayeb think about the voigtlander instead if distance markings are more important than AF.

BlueInTheShadow wrote:

Hi all,
1. How would you rank the focus speed of the 40mm ?

2. Would there anything technically hindering marking a few point myself - would they be good for absolute reference or is there some kind of hysteresis in the focus mechanism?

Thanks!

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