Cosina 100-500mm 1:5.6-8 MC Macro

altopiet · 07-28-2011, 05:26 AM

I got this lens for about $20. It has no zoom creep, I would rather call it zoom RUN.
No PP, just resized from RAW to JPEG

The lens

Two bird photo's taken at between 450+500, and f5.6, with my K-x, using CIF
1. At 1/1000, ISO 1250

2.

This is a heavy lens, I still have to try it hand held

Last edited by altopiet; 05-07-2012 at 08:22 AM.

kenafein · 07-28-2011, 07:15 AM

Wow what a steal, congrats on the great deal. You will make RioRico so jealous. 20 is probably the scrap metal price alone for that beast.

altopiet · 07-28-2011, 08:33 AM

Originally posted by kenafein

Wow what a steal, congrats on the great deal. You will make RioRico so jealous. 20 is probably the scrap metal price alone for that beast

I must say I do take his advice of bid low and bid often! The problem with this lens is that I'll most probably have to go to gim before I can try decent hand held shots, and that would cost an arm and a leg

atupdate · 09-10-2011, 10:55 AM

I bought the Promaster 100-500mm f5.6-f8 (Same lens - different badge) back in May and decided it was time to try it out. I bought the lens off Craigslist for $20 and about $20 in gas to pick it up.

The reason I got it so cheap was that there was an issue with the barrel and I could only operate the zoom from 120-500mm. When I got it home, I discovered that the barrel had a big screw mark under the collar thread that attaches to a tripod. I figure someone tighten the collar to tight or someone's tripod screw was too long. Either way, it probably put a flat spot on the barrel. To add insult to injury, when I was removing the Ricoh pin, the steel ball that locks the aperture in the A position fell out and turned my A lens into a M lens.

Enough talk, here are a few shots I posted in the long lens club (with mono-pod).

Somewhere in the 400-500mm range

300-400mm range

Not really sure.

500mm with a little crop

Post processing wasn't much different from my normal processing with my Kit lens.

Tim

Sagitta · 01-06-2022, 11:31 PM - **2 Likes**

Picked this lens up in late summer this year for just under $100. The lens is DEFINITELY worth more than that for the results it produces.

07-28-2011, 05:26 AM	#1
altopiet Veteran Member Join Date: Sep 2010 Location: The Gem of the Karoo, South Africa Photos: Gallery \| Albums Posts: 2,307	Cosina 100-500mm 1:5.6-8 MC Macro I got this lens for about $20. It has no zoom creep, I would rather call it zoom RUN. No PP, just resized from RAW to JPEG The lens Two bird photo's taken at between 450+500, and f5.6, with my K-x, using CIF 1. At 1/1000, ISO 1250 2. This is a heavy lens, I still have to try it hand held Last edited by altopiet; 05-07-2012 at 08:22 AM.

09-10-2011, 10:55 AM	#4
atupdate Pentaxian Join Date: Oct 2006 Location: Dayton, OH Photos: Gallery Posts: 4,723	Promaster Version I bought the Promaster 100-500mm f5.6-f8 (Same lens - different badge) back in May and decided it was time to try it out. I bought the lens off Craigslist for $20 and about $20 in gas to pick it up. The reason I got it so cheap was that there was an issue with the barrel and I could only operate the zoom from 120-500mm. When I got it home, I discovered that the barrel had a big screw mark under the collar thread that attaches to a tripod. I figure someone tighten the collar to tight or someone's tripod screw was too long. Either way, it probably put a flat spot on the barrel. To add insult to injury, when I was removing the Ricoh pin, the steel ball that locks the aperture in the A position fell out and turned my A lens into a M lens. Enough talk, here are a few shots I posted in the long lens club (with mono-pod). Somewhere in the 400-500mm range 300-400mm range Not really sure. 500mm with a little crop Post processing wasn't much different from my normal processing with my Kit lens. Tim

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07-28-2011, 07:15 AM	#2
kenafein Veteran Member Join Date: May 2011 Location: Southern California Photos: Albums Posts: 4,082	Wow what a steal, congrats on the great deal. You will make RioRico so jealous. 20 is probably the scrap metal price alone for that beast.

07-28-2011, 08:33 AM	#3
altopiet Veteran Member Join Date: Sep 2010 Location: The Gem of the Karoo, South Africa Photos: Gallery \| Albums Posts: 2,307 Original Poster	Originally posted by kenafein Wow what a steal, congrats on the great deal. You will make RioRico so jealous. 20 is probably the scrap metal price alone for that beast I must say I do take his advice of bid low and bid often! The problem with this lens is that I'll most probably have to go to gim before I can try decent hand held shots, and that would cost an arm and a leg

01-06-2022, 11:31 PM - 2 Likes	#5
Sagitta Veteran Member Join Date: Feb 2011 Location: Maine Photos: Gallery Posts: 3,081	Picked this lens up in late summer this year for just under $100. The lens is DEFINITELY worth more than that for the results it produces.