vivitar 28 2.8 vmc

hellbike · 12-26-2013, 05:16 AM

I have vivitar 28mm 2.8 auto vmc version, that is not present in the lens database.

Is this lens worth keeping? I aim for good IQ and my other lenses are pentax-k 50mm 1.4 and pentax-k 135mm 2.5 and i need 28mm that is at similar level (but doesn't have to be so light)

elliott · 12-26-2013, 05:28 AM

There are a lot of different Vivitar 28mm f2.8s, made by many different optical manufacturers.The serial number is an indicator of who made it, what are the first two digits?

It is odd that it says VMC, which is Vivitar Multi Coating, that is usually reserved for their higher end lenses like the Series 1s. The only Series 1 28mm I know of is the Tokina made 28mm f1.9.

Since you have it and there is always sample variation between otherwise identical lenses, you're really the best to judge whether or not it is a keeper.

hellbike · 12-26-2013, 05:29 AM

it's 90401331

hellbike · 12-26-2013, 05:42 AM

it looks like this - Great Vivitar 28mm Bestiary: Details

elliott · 12-26-2013, 05:42 AM

The 9 indicates a Cosina made lens.

A quick search turned up this thread where pentagor has one under the Cosina name that he likes.
https://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/41025-cosina-mc.html

There are a few pictures of his lens there, so you can see if it matches yours. Vivitar never made their own lenses, though the did design the Series 1s, you can usually find identical stuff under other brands.

elliott · 12-26-2013, 05:54 AM

If it is identical to the one from that site, I don't think it is a match for pentagor's, the distance scale is different. It appears to be a match for the Cosinon-W 28mm f2.8.

This reviewer didn't love his:
Cosina MC Cosinon-W 28mm F2.8 Lens Reviews - Cosina Lenses - Pentax Lens Review Database

12-26-2013, 05:16 AM	#1
hellbike New Member Join Date: Jul 2011 Posts: 10	vivitar 28 2.8 vmc I have vivitar 28mm 2.8 auto vmc version, that is not present in the lens database. Is this lens worth keeping? I aim for good IQ and my other lenses are pentax-k 50mm 1.4 and pentax-k 135mm 2.5 and i need 28mm that is at similar level (but doesn't have to be so light)

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Vivitar VMC 40mm f/2.5 Pancake Lens	Judah	Pentax SLR Lens Discussion	3	12-15-2013 03:47 PM
For Sale - Sold: Pentax 67+105 2.4, A 28 2.8, vivitar macro converter, Leica M3+Elmar 50 2.8 etc.	Sonny0205	Sold Items	4	09-28-2013 10:04 AM
For Sale - Sold: Vivitar Series One 55mm f1.2 (Revuenon, but in the ultra-rare Vivitar VMC badging)	Quazimoto	Sold Items	2	07-31-2013 10:05 PM
Vivitar Series 1 VMC 28-90mm f2.8-3.5	FotoPete	Pentax SLR Lens Discussion	4	02-20-2007 06:52 PM

12-26-2013, 05:28 AM	#2
elliott Inactive Account Join Date: Dec 2008 Location: North Carolina Photos: Albums Posts: 1,720	There are a lot of different Vivitar 28mm f2.8s, made by many different optical manufacturers.The serial number is an indicator of who made it, what are the first two digits? It is odd that it says VMC, which is Vivitar Multi Coating, that is usually reserved for their higher end lenses like the Series 1s. The only Series 1 28mm I know of is the Tokina made 28mm f1.9. Since you have it and there is always sample variation between otherwise identical lenses, you're really the best to judge whether or not it is a keeper.

12-26-2013, 05:29 AM	#3
hellbike New Member Join Date: Jul 2011 Posts: 10 Original Poster	it's 90401331

12-26-2013, 05:42 AM	#4
hellbike New Member Join Date: Jul 2011 Posts: 10 Original Poster	it looks like this - Great Vivitar 28mm Bestiary: Details

12-26-2013, 05:54 AM	#6
elliott Inactive Account Join Date: Dec 2008 Location: North Carolina Photos: Albums Posts: 1,720	If it is identical to the one from that site, I don't think it is a match for pentagor's, the distance scale is different. It appears to be a match for the Cosinon-W 28mm f2.8. This reviewer didn't love his: Cosina MC Cosinon-W 28mm F2.8 Lens Reviews - Cosina Lenses - Pentax Lens Review Database