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05-04-2021, 09:27 PM - 4 Likes   #1
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Bronica PG lens on Pentax 645Z - images.

Fotodiox had a sale on their Bronica lens adapter. So I picked one up and found a PG lens on the bay,

The adapter is well made and the inner surfaces aren't as reflective as previous adapters. It fits both camera and lens well. I did add flocking inside to make it even less reflective.

The Bronica PG lenses were made for the last Bronica SLR - the 6x7 GS-1. The lenses have leaf shutters that do not function with the Pentax 645. The 150 lens is the smallest of all PG lenses. Many Bronica users praise the bokeh.

Using the Pentax 645 with the Bronica isn't difficult. It does require stop down metering. There is one small hitch. The adapter has no way to stop the lens down. It is always wide open. The lens has a button for depth of field preview. It doesn't lock. I use a wire zip tie to keep the button depressed.

I think the lens performs nicely. It has nice bokeh and F4 gives a little more depth of field than the Pentax 165 F 2.8.
Here are a few pictures processed in my normal fashion.

Thanks for looking,
barondla

Tree full of blooms was shot at F4. Tree trunk at F8. Both on tripod.

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Last edited by barondla; 05-06-2021 at 09:43 PM. Reason: Fixed error. Tamron owned Bronica, not Tokina. Lenses were designed and built by Bronica.
05-04-2021, 09:46 PM - 1 Like   #2
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QuoteOriginally posted by barondla Quote
Fotodiox had a sale on their Bronica lens adapter. So I picked one up and found a PG lens on the bay,

The adapter is well made and the inner surfaces aren't as reflective as previous adapters. It fits both camera and lens well. I did add flocking inside to make it even less reflective.

The Bronica PG lenses were made for the last Bronica SLR - the 6x7 GS-1. All of these lenses were designed and built by Tokina, Bronica's owner. The lenses have leaf shutters. The leaf shutters do not function with the Pentax 645, The 150 lens is the smallest of all PG lenses. Many Bronica users praise the bokeh,

Using the Pentax 645 with the Bronica isn't difficult. It does require stop down metering. There is one small hitch. The adapter has no way to stop the lens down. It is always wide open. The lens has a button for depth of field preview. It doesn't lock. I use a wire zip tie to keep the button depressed.

I think the lens performs nicely. It has nice bokeh and F4 gives a little more depth of field than the Pentax 165 F 2.8.
Here are a few pictures processed in my normal fashion.

Thanks for looking,
barondla

Tree full of blooms was shot at F4. Tree trunk at F8. Both on tripod.
Very nice results.
05-04-2021, 09:55 PM - 1 Like   #3
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Yes, the results look good!
05-04-2021, 11:39 PM - 1 Like   #4
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Wasn't Tamron the Bronica's owner?

05-05-2021, 01:06 AM   #5
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QuoteOriginally posted by BarneyL Quote
Wasn't Tamron the Bronica's owner?
Oops, you are correct. I'll fix the post.

Thanks,
barondla
05-05-2021, 05:26 AM - 1 Like   #6
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The results are pretty good. You might want to check out other manufacturer's adapters if available. I had 2 Fotodiox for Pentax 6x7 to 645 that the lens lock pins got stuck - with the lens attached. A nightmare to disassemble. Fotodiox helped with replacements, but they had the same problem. Other Fotodiox adapters were fine. I have a K&F now for 6x7 to 645 as well as genuine Pentax. Both work well.
05-05-2021, 07:23 AM - 1 Like   #7
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The first picture is beautiful.
05-05-2021, 10:25 AM   #8
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QuoteOriginally posted by ProfessorBuzz Quote
The results are pretty good. You might want to check out other manufacturer's adapters if available. I had 2 Fotodiox for Pentax 6x7 to 645 that the lens lock pins got stuck - with the lens attached. A nightmare to disassemble. Fotodiox helped with replacements, but they had the same problem. Other Fotodiox adapters were fine. I have a K&F now for 6x7 to 645 as well as genuine Pentax. Both work well.
Thanks for the warning. Haven't seen another Bronica lens to Pentax 645 adapter. If the lens gets stuck on the adapter it won't matter. It's the only Bronica lens I have and there aren't any Bronica bodies sitting around. Will check it out.

I have a 3rd party 645-67 adapter. It might be Fotodiox. Had to wait for it because it was a new design. It will now be checked out in great detail.

Thanks for the heads up,
barondla

05-05-2021, 06:39 PM   #9
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QuoteOriginally posted by UncleVanya Quote
Very nice results.
Thank you. I'm happy with the results.

Thanks,
barondla

Last edited by barondla; 05-05-2021 at 06:46 PM.
05-05-2021, 06:46 PM   #10
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QuoteOriginally posted by Ed Hurst Quote
Yes, the results look good!
Thank you.

Thanks for commenting,
barondla
05-05-2021, 06:56 PM   #11
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QuoteOriginally posted by sergysergy Quote
The first picture is beautiful.
Thanks. The lens has nice bokeh.

Thanks,
barondla
05-05-2021, 10:27 PM   #12
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Maybe you will even find a deal on other Bronica lenses.
05-06-2021, 02:09 PM - 1 Like   #13
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QuoteOriginally posted by pentaxus Quote
Maybe you will even find a deal on other Bronica lenses.
From what I saw on eBay the prices arenít far from Pentax A glass for the 645.
05-06-2021, 08:54 PM - 1 Like   #14
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Re: Tamron and Bronica

The GS-1 was released in 1983

Tamron bought Bronica in 1998, primarily for thier optical works and IP.

The GS-1 lenses were not Tamron made or designed, but you could argue that the current Tamron lenses are Bronica designs.... well sort of...
05-06-2021, 09:44 PM   #15
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QuoteOriginally posted by itsdoable Quote
The GS-1 was released in 1983

Tamron bought Bronica in 1998, primarily for thier optical works and IP.

The GS-1 lenses were not Tamron made or designed, but you could argue that the current Tamron lenses are Bronica designs.... well sort of...
Interesting. I corrected original post.

Thanks,
barondla
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