Focal length: 55mm
Aperture: F 1.4 - F 16
Min focus distance: 0.50m
Length (from flange): 45/52mm [+ 27mm for the adapter], rear element protrudes 8mm
A7 and the lens.
Sample pictures: You may click
on the sample image (except closest focus) for full resolution. The
full resolution image opens in a new window, so you can keep it open
for comparison. Focus is on the
dish to the right of the big solar panel near the center of the photo.
F 1.4, ISO 100.
Closest focus is 37cm from
edge of the lens, F 8. Focus on
the program wheel of the camera.
This lens was one of the sought after luminous lenses for SLR
cameras. They have quite heavy, yellow tinted glass. A major part of
these were made by Tomioka for different brands. Whether Tomioka made
lenses for Rikenon, I don't know. In any case it's nearly identical to
my Revuenon, hence its perfomance is the same. Some time ago there was
a hype about these lenses and they
sold for high prices, but this is more ore less over. The daylight
setting of the camera compensates the yellow tint, which isn't the case
with auto-white-balance on my camera.
Wide open it's fine for a F 1.4, there is a hint of shaded
upper edges and some softness, but it's perfectly usable. Stopped down
sharp. The lens has good
close focussing capablities. It is relatively big and heavy for a F 1.4
lens. A nice lens which offers two more usable stops than a standard
lens, or a 4x ISO gain.