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06-02-2016, 08:17 PM   #1
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CZ Flektogon 50 f4

Does anyone know CZ Flektogon 50 f4 in Pentacon 6 mount? This looks like an old lens, maybe from the 60s, if not older. In the past I assumed that all CZ lenses are great, but I hear there is variation across the years, I guess like with all lenses. Would this be a good lens to mount on the 645?

06-02-2016, 10:01 PM   #2
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Yes, I noted variations in the course of the time too. I think the reason was the changing quality of the glasses.
This Flektogon is shown here for example:

Carl Zeiss Jena Flektogon 50mm f4

I have found almost all CZ DDR lenses to be a little "blueish".
I had an adapter Pentacon-M42 and never seeing similar for 645.
06-02-2016, 11:08 PM   #3
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I've got a Pentacon Six mount Flektogon 50/4 (a later, black version). You can get some idea of the age by reading this... Zeiss design variations & Serial numbers

Hartblei make a good quality P6 -P645 adapter.

Bob
06-03-2016, 12:41 AM   #4
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Thank you for your comments! Would you recommend getting it?

06-03-2016, 11:38 AM   #5
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It's not a bad lens but I've not yet used it on the 645Z......I've had P6 lenses for some time but only recently picked up the 645Z and haven't got around to tryng them all yet.

For the record, I've got the following Pentacon Six mount lenses;
Carl Zeiss Jena 50mm f/4 Flektagon MC P6
Carl Zeiss Jena 65mm f/2.8 Flektagon P6
Carl Zeiss Jena 80mm f/2.8 Biometar MC P6
Carl Zeiss Jena 120mm f/2.8 Sonnar MC P6
Petzvar Petzval 120mm f/3.8 P6
Carl Zeiss Jena 180mm f/2.8 Sonnar MC P6
Carl Zeiss Jena 300mm f/4 Sonnar MC P6
Heinz Kilfitt 300mm f/4 Pan-Tele-Kilar P6
Meyer-Pentacon 300mm f/4 Orestegor P6
Meyer-Pentacon 500mm f/5.6 Orestegor P6

of which the 120 and 180 Sonnars, along with the Pan Tele Killar, are excellent on the Z

Bob
06-03-2016, 12:05 PM   #6
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QuoteOriginally posted by Bob L Quote
It's not a bad lens but I've not yet used it on the 645Z......I've had P6 lenses for some time but only recently picked up the 645Z and haven't got around to tryng them all yet.

For the record, I've got the following Pentacon Six mount lenses;
Carl Zeiss Jena 50mm f/4 Flektagon MC P6
Carl Zeiss Jena 65mm f/2.8 Flektagon P6
Carl Zeiss Jena 80mm f/2.8 Biometar MC P6
Carl Zeiss Jena 120mm f/2.8 Sonnar MC P6
Petzvar Petzval 120mm f/3.8 P6
Carl Zeiss Jena 180mm f/2.8 Sonnar MC P6
Carl Zeiss Jena 300mm f/4 Sonnar MC P6
Heinz Kilfitt 300mm f/4 Pan-Tele-Kilar P6
Meyer-Pentacon 300mm f/4 Orestegor P6
Meyer-Pentacon 500mm f/5.6 Orestegor P6

of which the 120 and 180 Sonnars, along with the Pan Tele Killar, are excellent on the Z



Bob
That's quite a collection! I am looking at the CZJ 120mm f2.8 as well, and I have CZJ 80mm f2.8. I haven't tried it yet, as I just got a 645 and am still waiting for the film to arrive. How would you say CZJ lenses compare to Pentax - A 645 lenses? I have one CZJ 50mm f2.8 in M42 mount and I think it is closest to K28 f3.5 of all Pentax lenses I have... I would be happy if the Flektogon was the same.
06-03-2016, 02:21 PM   #7
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My assessment will be based on slightly different parameters in that the Z only needs 55mm of the image circle compared to around 75mm for your film body. The P6 lenses cast a circle of 90mm (similar to the P67 lenses) so you may see some manifestations of softer corners that are still well outside the area that I can capture.
The CZJ P6 lenses are certainly heavier than the A-645's (generally speaking) .....the 180/2.8 is worth three 645 A-200/4's and is perhaps closer to the P67 165/2.8

I'm away at the moment (intending to pit the 645Z against the 5DS R) but, when I get home, I'll take some time to get some comparison shots done so that you can maybe judge the differences yourself. I rate rendering/bokeh higher on the scale than ultimate sharpness but I appreciate that the majority have drifted the other way.

Bob
06-04-2016, 07:36 AM   #8
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QuoteOriginally posted by Bob L Quote
My assessment will be based on slightly different parameters in that the Z only needs 55mm of the image circle compared to around 75mm for your film body. The P6 lenses cast a circle of 90mm (similar to the P67 lenses) so you may see some manifestations of softer corners that are still well outside the area that I can capture.
The CZJ P6 lenses are certainly heavier than the A-645's (generally speaking) .....the 180/2.8 is worth three 645 A-200/4's and is perhaps closer to the P67 165/2.8

I'm away at the moment (intending to pit the 645Z against the 5DS R) but, when I get home, I'll take some time to get some comparison shots done so that you can maybe judge the differences yourself. I rate rendering/bokeh higher on the scale than ultimate sharpness but I appreciate that the majority have drifted the other way.

Bob
I am with you on bokeh and rendering. I like sharpness in theory, but I have never bought a lens specifically because it was sharp. I saw a video comparing an old Soviet Lomo lens with a modern nikon. Nikon was way sharper, but produced very medical - looking images that were no match for beautiful pastel colours of the Lomo. Lomo wasn't very sharp in the corners though... I am thinking of using the 645 for landscapes, so I wonder if sharpness might be more important. I usually have an idea of an image I want to create and then I pick the lens that will do it. So in my mind lens A is not better than lens B, but rather lens A is better for that, and lens B is better for this.

I really appreciate your offer, and am very interested in seeing some pictures...

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