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Cosina 28-105 2.8

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AaeJay View Drop Down
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Post Options Post Options   Quote AaeJay Quote  Post ReplyReply Direct Link To This Post Topic: Cosina 28-105 2.8
    Posted: 24 November 2009 at 15:54
I saw a Cosina 28-105 2.8 lens for $99. I'm having a heard time finding reviews on this lens. Anyone know anything about it? I'm not sure if its worth buying or not. I think it has a 72mm filter. If anyone can help and offer some insight on this lens, it would be great appreciated. I found this link with 2 sample images using this lens. Anymore would be great

http://www.shutterasia.com/forum/showthread.php?t=22647
 



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Fuzzphoto View Drop Down
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Post Options Post Options   Quote Fuzzphoto Quote  Post ReplyReply Direct Link To This Post Posted: 24 November 2009 at 16:38
There's no such lens as a Cosina 28-105mm f/2.8. The one I know is a 28-105mm f/2.8-3.8 which I often see advertised as a f/2.8, and yes it's cheap and even then, probably not worth the money.
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gillbod View Drop Down
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Post Options Post Options   Quote gillbod Quote  Post ReplyReply Direct Link To This Post Posted: 24 November 2009 at 16:51
i've heard bad things about it. but then again, haven't seen many samples.

if you're after a bargain, look for an old minolta 35-105, and try to get a metal bodied one.

not particularly fast. but sharp, and well-built.
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Rusty View Drop Down
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Post Options Post Options   Quote Rusty Quote  Post ReplyReply Direct Link To This Post Posted: 24 November 2009 at 16:59
Theres 2 Cosina's that are knowned to be 'worth it', the 100/3.5, and a wide zoom, can't remember exactly the specs, but it's close to a 16-35 zoom, IIRC.

The rest of Cosina's lineup is pretty weak and not worth the bargain. Better to save your money and buy up.
a850 | MinO 35-70/4 | MinO 28-85 | MinO 100/2.8 Macro | Tamron 70-300USD
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icameisaw View Drop Down
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Post Options Post Options   Quote icameisaw Quote  Post ReplyReply Direct Link To This Post Posted: 10 October 2019 at 13:24
Somewhat late reply :) but there's almost nothing else out there about it and someone's offering a 'Minolta 28-105mm' just sent this to me. Well, it is the Minolta Alpha fit version...

I've only done a handful of test shots, just in case it was worth keeping, but it's bad: visibly not sharp even without pixel peeping, pale flat colours, and a horrible push-pull zoom that (on this copy at least) is very loose.

About the only plus points would be the speed and no colour fringing when given a tough test, but it's going straight back.

Their 100mm f3.5 macro is, despite its build, so much nicer than this that it's hard to believe it's the same manufacturer.

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Miranda F View Drop Down
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Post Options Post Options   Quote Miranda F Quote  Post ReplyReply Direct Link To This Post Posted: 11 October 2019 at 15:02
Every Japanese lens manufacturer and his dog can make a good prime lens. They sorted the problems out in the 1960s and they had another three decades to practise it before digital SLRs came out.

Zooms are a different matter. Making a good one *before* the era of cheap computing power was very difficult and several manufacturers made a hash of it. Minolta were (IMHO) one of the very few who managed to devise a simple optical formula which could give quite acceptable performance to a cheap mass-produced consumer zoom in the 28-80/100mm range. So choose your film-era zoom with care ...

IMHO Sony are still among the best at selling good-quality zooms at low prices. I just wish they'd do it in FF. Maybe when the demand for expensive lenses has dampened, they'll have a go ...
Miranda F & Sensorex, Sony A58, Nex-6, Dynax 4, 5, 60, 500si/600si/700si/800si, various Sony & Minolta lenses, several Tamrons, lots of MF primes and *far* too many old film cameras . . .
 



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skm.sa100 View Drop Down
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Post Options Post Options   Quote skm.sa100 Quote  Post ReplyReply Direct Link To This Post Posted: 15 October 2019 at 02:20
agree with gillbod.
Another option would be a MAF 28-135. Pretty good lens for its age. Might be a bit over hyped but it delivers good images and the Minolta colors are always a favorite of mine.
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