jaapv
RFF Sponsoring Member.
This one I have solved, I found it by chance during my Christmas reading:
Optical glass can exhibit birefringence or in plain langguage double contours when placed under mechanical stress. If one of the element mountings is slightly overtightened in the lens barrel double contours can appear.
Optical glass can exhibit birefringence or in plain langguage double contours when placed under mechanical stress. If one of the element mountings is slightly overtightened in the lens barrel double contours can appear.
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M
merciful
Guest
Neat. Thanks, Jaap.
RayPA
Ignore It (It'll go away)
Merciful, do you use a filter on your lens?
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M
merciful
Guest
RayPA said:
Nope, that sucker is bareback.