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[OM] Trigger pulled Sony Nex-7 on the way. Suggestions on OM Zuiko adapt

Subject: [OM] Trigger pulled Sony Nex-7 on the way. Suggestions on OM Zuiko adapter
From: usher99@xxxxxxx
Date: Mon, 13 Jan 2014 19:57:15 -0500 (EST)
BB writes


>>>Any suggestions on a decent OM Zuiko to NEX-7 adapter.

Seems my other comments were waay late, rather like discussing nuances 
of oar design after the Rubicon has been crossed.  BB doesn't even 
require any stinkin lenses for compelling images so anything I am sure 
will work well for the trip.  Please comment on what you think of the 
Nex.


Well to keep FOV about the same requires Speedbooster or 
lensturbo---latter much inferior optics but might be OK for slow teles 
by report. For now one option is the expensive EF to NEX  (&OMZ to 
Canyon!!)  that has the fancy electronics for aperture
control/AF and some OMZ lenses rear protrusions (don't remember  which 
one causes the trouble) interfere--see list below. That be said the 
tolerances are tight but some reported below have still worked w/o 
damaging the SB.

I read a comment by Bo Ming that they were working on a direct OM to E 
mount but they tend to keep things under wraps and not a word since 
late Nov. I would think it would be much cheaper with no fancy shmancy  
electronics. The MTF is reported to sl increase in the center (seems 
almost impossible) but the edges/corners suffer a tad. The optic is 
designed about as carefully as feasible.
Standard adapters w/o optics are available form the usual suspects.

How bout an A7R MkII with IBIS and an EFC, Mike


List of manual focus lenses which REQUIRE MODIFICATION to be used on 
Speed Booster:

"Many manual focus lenses have rear protrusions (spikes, levers, other 
appendages) which would damage the optics and/or housing of Speed 
Booster?? They need to be modified before they can be safely used on 
Speed Booster?? Check and make sure there are no rear protrusions from 
the adapter/lens combination before using on Speed Booster. Scratches 
and damages caused by rear protrusions or by poor quality adapters are 
not covered by warranty. The following is an incomplete list of lenses 
known to be incompatible.

Leica R
Super-Elmar-R 15mm

Elmarit R 28/2.8

Elmarit R 35/2.8

Summicron R 50/2
Nikon F
20/2.8 AI-S


Olympus OM
OM 18/3.5

OM 21/2

OM 21/3.5

OM 28/2.8

OM 50/1.8
Pentax K
Every Pentax K-mount lens has a protruding fin and an aperture lever. 
It does NOT fit."


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