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LENS PORN: Sankyo Kohki Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)
LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)




Very little information exsits for this lens, but I can presume it's from around the 1960s. It's a pretty small and petite lens for a 200mm prime, it's slightly bigger than my hand and can easily fit the pocket. In terms of weight, it's insanely light for its focal range.

Just so you have an idea, I have 2 other 200mm primes: Sigma-Z Pantel 200mm f/3.5 and Komura 200mm f/3.5. Both of these are twice as huge and heavy!

It originally came in a removable Minolta MD mount. I just removed the screws and replaced the plate with a Nikon reverse ring. That fixes it!

What's nice about this f/4.5 variant over the f/3.5 variant is the star shaped iris when you close it down. The f/3.5 version only has a circular shape, but also the same 16 metal blades in the aperture.




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Specifications

Model: Komura 200mm f/4.5
Made in Japan

Aperture: f/4.5 - f/22
Blades: 16 (Metal, Star-shaped)

Focus throw: 270 degrees

Filter Thread Size: 55mm


LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)
Original mount beside the new Nikon converted mount

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Summary


Pros

Very small and lightweight, fits in the palm!

16 metal blades with star-shaped bokeh

Totally sharp and crisp from f/5.6 all the way down to f/22. In fairness, other lenses soften by f/16 due to diffraction.

270 degrees focus throw for accurate focusing

Great as a portrait lens.

Very simple construction, you can easily disassemble for cleaning

Very beautiful and stylish craftsmanship




Cons

Dreamy soft contrast when wide open at f/4.5

Manual stop-down aperture. Some of you may not like it.

The focus throw is too long when you want to shoot something in fast action, you're likely to miss it.

It comes with the Komura Uni Adapter, which you can change to fit the mount of your camera -- the bad news is they're pretty rare. So what I did was to glue a Nikon reverse ring instead.




Conclusion

This is a pretty good 200mm prime lens. You're good with this as long as you don't need f/4.5 since it's sharpest and has better contrast from f/5.6 down to f/22. Most old lenses from the 1950-1970s have a tendency to be soft wide open, so this is not an issue as long as you know this lens' limitation and know how to work around it.

The focus throw is one of the big turn off for me, especially when I need to capture something in action. I'm likely to miss it.

The main bonuses for having this lens is the fine craftsmanship and design, the compact convenience and the 16-metal-blade starry bokehs. Contrast and color rendition are so-so and I can easily just let go of this lens for a better one... perhaps its bigger sibling, the Komura 200mm f/3.5.

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Samples (Unedited)


LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

LENS REVIEW: Komura 200mm f/4.5 (Preset Lens)

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Further Reading








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The Nikon D5200 as my weapon of choice.

Vintage lenses are my poison.

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