Re: Summaron 35/2.8 screw mount
You can only remove the goggles on the infinity position and when removed the focusing ring is blocked, if you want to unblocked it you have to push on the little ball.
I think that the possibility of removing the goggles was only made for easying the storing in case like the shell shaped one.
What is sure is when you use the 3.5 / 35 Summaron without the goggles on the M2 the viewfinder frame line set by the bayonnet cam is the one for the 50mm.
Same for the classic 3.5/35 (without goggles, to be used with the SBLOO viewfinder)
The only way to get the 35mm frame line is to use the 3.5/35 in screw mount version and use the adaptor ring for it.
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regards
JC
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