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Vivitar (kobori) 35-105 f/3.2-4

Reviews Views Date of last review
1 10,603 Tue February 10, 2015
Recommended By Average Price Average User Rating
100% of reviewers $25.00 8.00
Vivitar (kobori) 35-105 f/3.2-4

Push-pull zoom, made by kobori (77xxxx serials).
This lens can have the overlarge aperture lever guard, which will prevent the lens mounting properly on dslr, see here.

M-type lens, no aperture contacts
55mm filter size
6 aperture blades; minimum aperture f/16
Mount Type: Pentax K

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Registered: May, 2010
Location: 1hr north of PDX
Posts: 3,682
Lens Review Date: February 10, 2015 I can recommend this lens: Yes | Price: $25.00 | Rating: 8 

Pros: fairly compact, 55mm filter size, 1:4 closeup@105mm
Cons: not sharp at max aperture, zoom creep, min focus 5'
Sharpness: 8    Aberrations: 8    Bokeh: 9    Handling: 8    Value: 9    Camera Used: K200d   

This is a pretty solid 8 in performance, but for $25 that's impressive! This lens' serial number begins with 77 which indicates Kobori manufacture; I've owned several Vivitar '77 lenses and really like the build quality.

I like its size more than the similar 28-105mm f/3.5-4.5 (also Kobori) with its 72mm filters; this one takes 55mm which I already own. I gave that lens an 8 also, this one would rank higher but hardly a full 9.

Stopping at f/16 is no issue with aps-c sensors, but 3624 users might wish for f/22. Both zoom and focus ranges are very short throws on this lens; 105mm is about an inch away from 35mm, and minfocus excluding macro is less than an inch. Aperture blades appear to be slightly rounded but in any case bokeh is quite smooth from what I've seen so far. A slight amount of flare is evident on strong interior lighting; maybe some day the sun will come out so I can use that..

I like it!

p.s. my copy had the flange that won't allow it to mount to digital cameras --- but the flange had separate screws on the outside that made removal a snap! Much better than needing to remove the mount to access the flange, I've done that before

Edit/update - this is impressively sharp and bright enough to make focusing easy. Very usable wide open. Definitely a flare machine when light hits the glass, but that can be a creative option.. unless it takes over the entire image. My rating is a high 8 after these tests, it's a 9 if you like creative flare

Two shots at 105mm f/4

flare sample - no PP
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