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**zzaletel** · 11:13 AM

Potentially some long reach on the cheap - I think this is k-mount, but am not 100% certain. That said, if you want to take a chance or can better determine the mount than I can via the internet (decent Vivitar Series 1 KA mount reference - https://simonhawketts.co.uk/2014/03/08/vivitar-series-1-70-210-mm-macro-zoom/#jp-carousel-3617), could be a low-cost manual focus option.

Vivitar Series II 100-500mm 1:5.6-8.0 Camera Lens - shopgoodwill.com

**marcusBMG** · 02-01-2022, 11:50 AM - **1 Like**

This is a later cosina made viv with PKA mount, so you will have on-camera aperture operation.

**aslyfox** · 02-01-2022, 11:52 AM

here is owners reviews

if it a series 1 as opposed to a series II

Quote:

Vivitar Series 1 100-500mm F5.6-8

Description:
This Vivitar Series 1 telephoto zoom lens was made by Cosina - 9xxxxx serials.
Also sold as a cosina and other marques eg phoenix.
Note that the PK-A/R mount has the ricoh pin which can catch in the AF slot on pentax dslr.

100-500mm F5.6 - 8 push pull zoom
Aperture: 5.6 - 8
Optical construction: 15 elements/ 10 groups
Field of View (full frame 35mm) 24° - 5,1°
CFD 3 m
Magnification max: 1:5
Length: 199,5 mm
Weight: 995 g
Filter: 67 mm

.

Read more at: Vivitar Series 1 100-500mm F5.6-8 Lens Reviews - Vivitar Lenses - Pentax Lens Review Database

**MXLX** · 02-01-2022, 08:52 PM

Why am I avoiding reading the review, HMMMM?

**zzaletel** · 02-06-2022, 05:26 PM

Sold for $66 - someone here snag it?

**MXLX** · 02-06-2022, 10:55 PM

Dang. In a perverse kinda way, I’m sorry I missed it.

**zzaletel** · 02-06-2022, 11:08 PM

There’s a Sigma 600mm mirror lens there if that’s an acceptably perverse substitute?

**MXLX** · 02-07-2022, 08:08 AM

No, I've done my mirror lens experiment(s). Two are still in the herd, but those are ones I did some searching for.

**zzaletel** · 02-08-2022, 08:30 AM

Well now you’ve piqued my curiosity.

**MXLX** · 02-09-2022, 08:59 PM

Well, the one I'd advise avoiding is the Tokina. The very early Sigmas were supposedly good. And believe it or not, there was a Spiratone (alert from the 60s and 70s) that was made by Tomioka (if memory serves) that was reportedly a gem. That one was a T-mount, so you can buy a T-to-PK mount for peanuts. Overall: Read up.

**zzaletel** · 02-09-2022, 10:39 PM

I’ve got the Tamron Adaptall II version and good for moonshots and sunspots but otherwise it’s okay.

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02-01-2022, 11:50 AM - 1 Like	#2
marcusBMG Site Supporter Join Date: Nov 2012 Location: North Wales Photos: Gallery \| Albums Posts: 2,870	This is a later cosina made viv with PKA mount, so you will have on-camera aperture operation.

02-01-2022, 11:52 AM	#3
aslyfox Seeker of Knowledge Join Date: Aug 2016 Location: Topeka, Kansas Photos: Gallery \| Albums Posts: 24,583	here is owners reviews if it a series 1 as opposed to a series II Quote: Vivitar Series 1 100-500mm F5.6-8 Description: This Vivitar Series 1 telephoto zoom lens was made by Cosina - 9xxxxx serials. Also sold as a cosina and other marques eg phoenix. Note that the PK-A/R mount has the ricoh pin which can catch in the AF slot on pentax dslr. 100-500mm F5.6 - 8 push pull zoom Aperture: 5.6 - 8 Optical construction: 15 elements/ 10 groups Field of View (full frame 35mm) 24° - 5,1° CFD 3 m Magnification max: 1:5 Length: 199,5 mm Weight: 995 g Filter: 67 mm . Read more at: Vivitar Series 1 100-500mm F5.6-8 Lens Reviews - Vivitar Lenses - Pentax Lens Review Database

02-01-2022, 08:52 PM	#4
MXLX Loyal Site Supporter Join Date: Apr 2019 Location: Western NC Photos: Albums Posts: 841	Why am I avoiding reading the review, HMMMM?

02-06-2022, 05:26 PM	#5
zzaletel Site Supporter Join Date: Dec 2011 Location: Alaska Posts: 525 Original Poster	Sold for $66 - someone here snag it?

02-06-2022, 10:55 PM	#6
MXLX Loyal Site Supporter Join Date: Apr 2019 Location: Western NC Photos: Albums Posts: 841	Dang. In a perverse kinda way, I’m sorry I missed it.

02-06-2022, 11:08 PM	#7
zzaletel Site Supporter Join Date: Dec 2011 Location: Alaska Posts: 525 Original Poster	There’s a Sigma 600mm mirror lens there if that’s an acceptably perverse substitute?

02-07-2022, 08:08 AM	#8
MXLX Loyal Site Supporter Join Date: Apr 2019 Location: Western NC Photos: Albums Posts: 841	No, I've done my mirror lens experiment(s). Two are still in the herd, but those are ones I did some searching for.

02-08-2022, 08:30 AM	#9
zzaletel Site Supporter Join Date: Dec 2011 Location: Alaska Posts: 525 Original Poster	Well now you’ve piqued my curiosity.

02-09-2022, 08:59 PM	#10
MXLX Loyal Site Supporter Join Date: Apr 2019 Location: Western NC Photos: Albums Posts: 841	Well, the one I'd advise avoiding is the Tokina. The very early Sigmas were supposedly good. And believe it or not, there was a Spiratone (alert from the 60s and 70s) that was made by Tomioka (if memory serves) that was reportedly a gem. That one was a T-mount, so you can buy a T-to-PK mount for peanuts. Overall: Read up.

02-09-2022, 10:39 PM	#11
zzaletel Site Supporter Join Date: Dec 2011 Location: Alaska Posts: 525 Original Poster	I’ve got the Tamron Adaptall II version and good for moonshots and sunspots but otherwise it’s okay.

Vivitar Series 1 100-500mm f5.6-8.0 lens on Shopgoodwill.com

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