SilverHalide
Newbie
I know this may sound a little weird. Will someone please kindly explain this to me.
The infinity on my M3's RF unit is short, say the RF images perfectly align when aimed at a subject 1.5 km away, but objects at actual infinity would appear like I could turn the focusing ring a tiny bit further pass the infinity lock.
That is, if I aimed it at a star, I would see the RF image of the star sitting a bit to the right of the actual star. (But a lamp post four standing blocks away would appear perfectly aligned.)
When I shot close-up portraits with a 50 mm lens at f4, focusing at the subject's eye about 1.3 meters away, the pictures came out with the subject's ear, shoulder, or the hair behind the head in sharp focus but not the eyes. It seems like the focus has overshot by about 20 centimeters.
Since this behavior is consistent, I often compensate for it by focusing on the nose or the subject's chest instead of the eyes and the picture would come out perfect. But this method proves to be unreliable at different focusing distances.
I've talked to a few technicians, two of which readjusted the eccentric screw for me looking at a ground glass. Both of them insisted 1.5 - 2 kilometers away is generally far enough as an infinity reference point and thus, they reseted my camera's infinity to the furthest subject they could see from their downtown shops. Which was not very far away at all.
(One of them previously calibrated my Leica IIIa to that very same lamp post and the camera focusses perfectly since, perhaps even more so than any of my M's.)
It bothers me very much that I can't do critical focussing nor enjoying the most my high speed lenses have to offer.
Does this make any sense to you? Can short infinity reference cause my focus to overshoot as mentioned?
Would it help if I'd try reseting the eccentric drum to true infinity myself?
Regards,
The infinity on my M3's RF unit is short, say the RF images perfectly align when aimed at a subject 1.5 km away, but objects at actual infinity would appear like I could turn the focusing ring a tiny bit further pass the infinity lock.
That is, if I aimed it at a star, I would see the RF image of the star sitting a bit to the right of the actual star. (But a lamp post four standing blocks away would appear perfectly aligned.)
When I shot close-up portraits with a 50 mm lens at f4, focusing at the subject's eye about 1.3 meters away, the pictures came out with the subject's ear, shoulder, or the hair behind the head in sharp focus but not the eyes. It seems like the focus has overshot by about 20 centimeters.
Since this behavior is consistent, I often compensate for it by focusing on the nose or the subject's chest instead of the eyes and the picture would come out perfect. But this method proves to be unreliable at different focusing distances.
I've talked to a few technicians, two of which readjusted the eccentric screw for me looking at a ground glass. Both of them insisted 1.5 - 2 kilometers away is generally far enough as an infinity reference point and thus, they reseted my camera's infinity to the furthest subject they could see from their downtown shops. Which was not very far away at all.
(One of them previously calibrated my Leica IIIa to that very same lamp post and the camera focusses perfectly since, perhaps even more so than any of my M's.)
It bothers me very much that I can't do critical focussing nor enjoying the most my high speed lenses have to offer.
Does this make any sense to you? Can short infinity reference cause my focus to overshoot as mentioned?
Would it help if I'd try reseting the eccentric drum to true infinity myself?
Regards,
