|Osawa MC 80-205mm f/4.5 Macro|
For those who haven't heard about a lens brand called 'Osawa', some online search turns up that it was the worlwide distributor of Mamiya products until they went bankrupt in 1984. They designed and manufactured their own lenses, and were usually sold at budget prices.
I found this old Osawa MC 80-205mm f/4.5 Macro, whose glass had bubbles and fungus. It comes in Pentax K mount.
Based on the condition of the glass and its specs, I didn't bother to waste time/effort to clean and convert this lens to a Nikon mount.
Minimum Focusing Distance: 6.5 feet 2 meters (normal mode)
Macro Mode: 1:7 at 80 mm
Filter Thread Size: 52 mm
Focus Throw: 90°
Aperture Run: f/4.5 - f/32
Wih built-in hood.
Made in Japan
The lens seems to be in mint cosmetic appearance and very clean. No scratches or dents.
Oh, it's the smoothest lens to operate ever! The focus/zoom ring is as light as air and nothing like I've ever tried before. It's also very lightweight.
Unfortunately, the glass had some bubbles and fungus inside. I didn't bother to waste time cleaning this lens since I won't be able to use it anyway. At least on my Nikon camera.
Considering the condition of its glass, I still managed to get decent images with this lens. It could have been a good performer when clean.
The macro at 80mm only goes to 1:7. Since I'm a macro shooter, at least a close focusing of 4 feet would be highly appreciated... but it does not. Yuck!
An aperture that goes down to f/32? It could have been nice if this was for a really close 1:2 or 1:1 macro.
I appreciate the half-hearted effort to include a macro feature that still isn't too close and therefore useless.
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