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28mm lens test: Vivitar vs. Vivitar vs. Vivitar, Chapter One
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PostPosted: Sun Mar 28, 2010 9:37 pm    Post subject: 28mm lens test: Vivitar vs. Vivitar vs. Vivitar, Chapter One Reply with quote

My Vivitar collection is growing, today I made a small test with my three 28mm Vivitars, a Kiron made f2.5, a Komine made f2.8 and a Tokina made f2.8

I also threw in there a Polar 28mm f2.8 and a Minolta 28mm f2

Sorry for not making a chart with the crops side by side (I don't have Photoshop here)

and sorry again for the boring image and the overexposed sky (I thought it was nice for testing for CA)

All photos taken in a tripod, with timer, in a Lumix G1, edited on Bibble 5

Links to full samples

Vivitar (Kiron) f/2.5 --> http://img138.imageshack.us/img138/5854/vivitarkiron28mmf25.jpg

Vivitar (Kiron) f/4 --> http://img28.imageshack.us/img28/2718/vivitarkiron28mmf4.jpg

Vivitar (Kiron) f/5.6 --> http://img338.imageshack.us/img338/3974/vivitarkiron28mmf56.jpg

Vivitar (Komine) f/2.8 --> http://img338.imageshack.us/img338/60/vivitarkomine28mmf28.jpg

Vivitar (Komine) f/4 --> http://img185.imageshack.us/img185/2522/vivitarkomine28mmf4.jpg

Vivitar (Komine) f/5.6 --> http://img185.imageshack.us/img185/2483/vivitarkomine28mmf56.jpg

Vivitar (Tokina) f/2.8 --> http://img340.imageshack.us/img340/1923/vivitartokina28mmf28.jpg

Vivitar (Tokina) f/4 --> http://img340.imageshack.us/img340/8328/vivitartokina28mmf4.jpg

Vivitar (Tokina) f/5.6 --> http://img684.imageshack.us/img684/4384/vivitartokina28mmf56.jpg

continue...


PostPosted: Sun Mar 28, 2010 10:00 pm    Post subject: Reply with quote

Polar f/2.8 --> http://img28.imageshack.us/img28/7942/polar28mmf28.jpg

Polar f/4 --> http://img28.imageshack.us/img28/2701/polar28mmf4.jpg

Polar f/5.6 --> http://img202.imageshack.us/img202/3423/polar28mmf56.jpg

Minolta f/2 --> http://img6.imageshack.us/img6/9844/minolta28mmf2.jpg

Minolta f/2.8 --> http://img6.imageshack.us/img6/1313/minolta28mmf28.jpg

Minolta f/4 --> http://img444.imageshack.us/img444/9756/minolta28mmf4.jpg

Minolta f/5.6 --> http://img444.imageshack.us/img444/9679/minolta28mmf56.jpg


My final impressions:

I'm not very impressed with the Vivitar Kiron, it's not super sharp, but at least the CA is low.
The Komine version is very sharp, but has lots of CA
The Tokina is very soft wide open but sharpens nicely stopped down.
The Polar is garbage, and the Minolta is the clear winner, very sharp at wider apertures, almost no CA and has the best color rendition

hope you liked Very Happy


PostPosted: Sun Mar 28, 2010 10:04 pm    Post subject: Reply with quote

Thanks for the test!

It's quite strange, that my result with Komine and Kiron were exactly opposite Smile Difference was smaller than on you samples, but Kiron was a bit less sharp and had a bit more CA.

So... my Kiron was lemon copy or your Komine is a lemon Confused

Any other owner of Komine 28/2.8 + Kiron 28/2.5 who could make a comparision?


PostPosted: Sun Mar 28, 2010 10:52 pm    Post subject: Reply with quote

Was the Komine by chance the Close Focus model?


PostPosted: Sun Mar 28, 2010 11:37 pm    Post subject: Reply with quote

no-X wrote:
Any other owner of Komine 28/2.8 + Kiron 28/2.5 who could make a comparision?


Are there any guides or references to determine which lenses were made by which manufacturers?

I have a Soligor 28/2.8, a Tamron 28/2.8, and a Panagor 28/2.5... no idea who made which... Question


PostPosted: Mon Mar 29, 2010 12:02 am    Post subject: Reply with quote

Scheimpflug,

The Panagor was likely made by Kino (aka Kiron) unless it was a late model which could have been made by Tokina (Panagor was the marketing name for Kino in Europe)...After it's demise, Tokina marketed some lenses under the Panagor label. The Tamron was made by Tamron & the Soligor could have been made by Kino, tokina, Komine or others....Aphot of it may help determine it's lineage...

Ivan Lee,
Looking at the lenses listed, it's no suprise that the Minolta was the best....It cost the most when new as well (by a large margin at that)


PostPosted: Mon Mar 29, 2010 12:58 am    Post subject: Reply with quote

Screamin Scott wrote:
Aphot of it may help determine it's lineage...


Thanks for the info. Here are all three side-by-side, in various stages of Frankenstein mount conversions. Very Happy





PostPosted: Wed Mar 31, 2010 11:40 pm    Post subject: Reply with quote

Any thoughts? Wink

Thanks.


PostPosted: Wed Mar 31, 2010 11:46 pm    Post subject: Reply with quote

Hard to say for certain...I'd venture to guess it was made for Soligor by Tokina...


PostPosted: Thu Apr 01, 2010 12:05 am    Post subject: Reply with quote

Thanks. So what I actually have then is:
* Soligor 28/2.8, probably made by Tokina
* Tamron 28/2.8, made by Tamron. Wink
* Panagor 28/2.5, made by Kino/Kiron
?

Also, if you had to take a guess at a rank from best to worst, how would you rank them? I would love to do a full comparison like Ivan Lee, but at the moment the Soligor is the only one with a stable mount on it. The Panagor in particular would take some permanent modification, possibly some machining to get a Nikon mount on it for me to test it. If it was a better lens, it might be worth it....

Thanks


PostPosted: Thu Apr 01, 2010 12:30 am    Post subject: Reply with quote

I would like to see the Vivitar Close Focus in Ivan's test.


PostPosted: Thu Apr 01, 2010 4:13 am    Post subject: Reply with quote

woodrim wrote:
Was the Komine by chance the Close Focus model?


nope, it's not the close focus version, but I would like to try it... Very Happy


PostPosted: Thu Apr 01, 2010 12:36 pm    Post subject: Reply with quote

***Komine 2.8/28 is average lens. very high CA at wide open and average sharpness.***

Huh! "only average", you're hard to please......I would say it's "very good".


PostPosted: Thu Apr 01, 2010 1:23 pm    Post subject: Reply with quote

Is Komine 28/2.8 and Komine Close-Focus 28/2.8 different lens? I thought the change of name was just a marketing decision and not an optical change... but these results could signify different optical design.

According to my experience Komine 28/2.8 was better than S-M-C Takumar 28/3.5, Vivitar/Kiron 28/2.5 and Focal 28/2.8.

Vivitar/Tokina Series 1 28/1.9 was sharper, but with more CA. I'll make some comparision to S-M-C Pentax 28/2.0 (Hollywood) in future.


PostPosted: Thu Apr 01, 2010 2:18 pm    Post subject: Reply with quote

I have collected a few Close Focus versions. I couldn't find an M42 version, so I kept buying others in search of a good candidate for mount conversion. I have a Minolta mount which is no good for a conversion; a Fujica X which is a good candidate; and an OM which looks to be a better candidate. However, I have yet to complete a conversion (soon). I have been able to try out the Minolta version by use of a mount converted with element. I wasn't expecting much because of the element. but it surprised me by being better than expected. I can only believe the direct mount will be better yet. And yes, the Close Focus is a different lens.


PostPosted: Thu Apr 01, 2010 2:46 pm    Post subject: Reply with quote

Interesting, thanks...

That would mean: Komine 28/2.8 < Kiron 28/2.5 < Komine Close-Focus 28/2.8 Smile


PostPosted: Thu Apr 01, 2010 3:56 pm    Post subject: Reply with quote

How to tell whether it is close focus or regular Komine? Any pics?


PostPosted: Thu Apr 01, 2010 4:58 pm    Post subject: Reply with quote

It says "Close Focus" along with everything else on the front.


PostPosted: Fri Apr 02, 2010 11:25 am    Post subject: Reply with quote

I have been trying to get one of the "Close Focus" versions on eBay for awhile in Nikon mount...They mostly show up as BIN @ overinflated prices...I've got a few other Komine made close focusing lenses (135mm F2.8 & 90mm F2.8 macro) but would like to get a copy of this one...The shots I have seen taken with it are intriguing..


PostPosted: Fri Apr 02, 2010 1:53 pm    Post subject: Reply with quote

I find the lens intriguing as well Scott,and like the saturation better then the Nikon 28mm f2.8 AI-S.....it's sharpness is also better then expected....

Woodrim is correct,the Close Focus version is different optically then the other Vivitar versions of the 28mm f2.8 lens.The Komine Close Focus 28mm f2.8 and the Komine RL Edition Close Focus are identical optically,the RL Edition had an extended six year warranty as a marketing ploy.











PostPosted: Sat Apr 03, 2010 4:06 pm    Post subject: Reply with quote

BTW...for those who haven't seen "The Great Vivitar 28mm Bestiary"

The list of Vivitar 28mm lenses so far...
http://photografica.robinparmar.com/vivitar.html

...and for those who have a little extra time ....

The thread that started the Bestiary...
http://www.pentaxforums.com/forums/pentax-slr-lens-discussion/34654-vivitar-28mm-fa31mm-replacement.html


PostPosted: Mon Apr 05, 2010 6:18 am    Post subject: Reply with quote

Scheimpflug

You Panagor lens looks exactly like my Vivitar 28mm f/2.5 The writing, the shape of the barrel and the tip looks exactly the same. And this Vivitar 28mm F/2.5 of mine is very sharp. It is sharper than another Vivitar that I have 28mm with F/2.8 (which for some reason, I believe that it is a Komine lens). The F/2.8 lens is made of plastic, small and light. The 28mm f/2.5 is heavy and metal mount.


PostPosted: Mon Apr 05, 2010 8:33 am    Post subject: Reply with quote

That's interesting, aniramca. What mount is your lens? My Panagor is a Canon FD mount, which doesn't show up in the Vivitar list in the page that Boomer Depp linked to a few posts up...


PostPosted: Mon Apr 05, 2010 9:00 am    Post subject: Reply with quote

Some time ago I posted this comparision

left-upper edge (sharpness):




right-down egde (CA):



the Komine Vivitar is close-focus MC model


PostPosted: Mon Apr 05, 2010 11:58 am    Post subject: Reply with quote

Scheimpflug

Mine is a Nikon mount. Here are photos of the lens and samples