timballic Offline Upload & Sell: Off
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As I have two A7's I thought I'd try a Shoten for the 2nd one and do a comparison between it and the Fotodiox Pro Signature Edition, that I got for the 1st one.
The Shoten is quite a bit cheaper as it can be obtained on eBay through Hong Kong.
The packaging was rather different, the Shoten arriving in a strong, fairly up-market, padded box, the Fotodiox Pro, in a simple thin cardboard filter box.
DPP_1 by Timothy Ball, on Flickr
The Shoten box was lined with shaped foam and came with instructions (in Japanese only!)
DPP_2 by Timothy Ball, on Flickr
The Fotodiox was simply in a plastic bag between two pieces of thin foam
DPP_3 by Timothy Ball, on Flickr
The Shoten has a Satin Chrome finish, the FP Signature Edition is in bare Brass,
DPP_4 by Timothy Ball, on Flickr
Underside: The FPSig is more substantial, with larger bayonet flanges
DPP_5 by Timothy Ball, on Flickr
The Shoten is 2.5mm smaller outer diameter than the FPSig, which covers the mount of the A7
The Shoten weighs 24g, the FPSig 27g
DPP_6 by Timothy Ball, on Flickr
The bare Brass finish of the FPSig is quite a bit softer than the Shoten, and by the end of my measurements showed quite a few scratches
DPP_7 by Timothy Ball, on Flickr
The Satin Chrome finish of the Shoten is quite a bit harder and was unmarked by the depth gauge
DPP_8 by Timothy Ball, on Flickr
The machining on the FPSig is a little rougher than the Shoten, but not bad
DPP_9 by Timothy Ball, on FlickrDPP_11 by Timothy Ball, on Flickr
The Shoten finish is a little better, but I doubt it is significant(?)
DPP_10 by Timothy Ball, on FlickrDPP_12 by Timothy Ball, on Flickr
However, the real difference is in the amount of variation between the two:
The main ring of both had only O.5 thou" variation around, so, a tie there.
The important dimension is the depth from front of the mount to the base of the machined holes.
Remember, I measured the front ring of the removed Sony mount at 59 thou"
Native mount thickness by Timothy Ball, on Flickr
The FPSig depths only varied by 0.05 thou" from 60.5 - 61 thou" So ~ 1.5 thou" thicker than the original,
which could/would affect infinity focus with some legacy lenses.
Signature thickness in recesses by Timothy Ball, on Flickr
The Shoten holes on the other hand varied by 2.5 thou", from 58.5 - 61 thou", so a greater chance of causing off-centering!
DPP_13 by Timothy Ball, on Flickr
Both makes feel much more secure and stop the rotational slack of the original.
You take your pick!
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