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09-15-2018, 02:01 PM   #16
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QuoteOriginally posted by MilkaSchokoHase87 Quote
K-Mount lenses? I never Heard about them and they are Not listed in the data base
Look at the Pentax camera I use in my sig.

09-15-2018, 02:03 PM   #17
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I think you speak about 67 Mount lenses
09-15-2018, 02:19 PM   #18
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QuoteOriginally posted by tuco Quote
Look at the Pentax camera I use in my sig.
this list is limited to only Pentax-branded k-mount lenses....
09-15-2018, 02:33 PM - 1 Like   #19
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QuoteOriginally posted by pepperberry farm Quote
this list is limited to only Pentax-branded k-mount lenses....
Okay. But in the catagory Pentax SLR Lens Discussion the Pentax 6x7 certainly qualifies as a candidate since I didn't see any other reference to format. From my film use perspective I think, oh, Pentax also makes small format lenses?

09-15-2018, 02:34 PM   #20
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QuoteOriginally posted by tuco Quote
Okay. But in the catagory Pentax SLR Lens Discussion the Pentax 6x7 certainly qualifies as a candidate since I didn't see any other reference to format. From my film use perspective I think, oh, Pentax also makes small format lenses?
it's his list, not mine... post #6
09-15-2018, 09:44 PM   #21
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Also, it seems you are missing the M 50/2?
09-15-2018, 10:27 PM   #22
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Leekil you are right. I know I had it. I Start searching for it

---------- Post added 09-15-18 at 10:29 PM ----------

But I still need some ideas and Tipps of testing and comparing. I dont want to open a discussion which one is the Best.
09-15-2018, 10:34 PM - 2 Likes   #23
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I would say test sharpness, both at maximum aperture and stopped down. Also contrast (for extra points, do it both with and without lens hoods), bokeh, flare resistance, overall image quality. Include the photos for others to look at and make their own evaluations, but also draw your own subjective conclusions about the more subjective of the qualities listed above. Also evaluate ergonomic aspects, like manual focus feel and ease of use. Potentially evaluate on film, as well as digital.

09-16-2018, 06:27 AM - 3 Likes   #24
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Great collection.

I am feeling a little unworthy now.

Of all the lenses shown, I only have the M 50mm f/1.4, M 50mm f/1.7, M 50mm f/2 and A 50mm f/1.7.

But then, I have one of these. So there is that to make me feel better.



The M 50mm f/4 macro is also missing from the collection.

Edit: there was an F 50mm f/2.8 macro as well.

Last edited by Wasp; 09-16-2018 at 06:41 AM.
09-16-2018, 01:10 PM - 2 Likes   #25
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I've gotta wonder why you want to test them. Just enjoy using them! Most lenses are better than most photographers. 😀
09-16-2018, 03:02 PM - 1 Like   #26
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QuoteOriginally posted by jcdoss Quote
I've gotta wonder why you want to test them. Just enjoy using them! Most lenses are better than most photographers. 😀
especially if you are limiting yourself to only Pentax-manufactured, k-mount, film-era lenses....
09-16-2018, 03:36 PM   #27
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http://www.takinami.com/yoshihiko/photo/lens_test/pentax_normal.html
09-16-2018, 10:02 PM   #28
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@wasp: I got the A50f2.8 macro too and the FA50f2.8 macro

@wheatfield: thanks for this link.
Lets See if I can confirm these data with some pics.
09-17-2018, 08:53 AM   #29
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Is there a way to determine MTF at home with some software and charts at reasonable prices?
09-17-2018, 02:16 PM   #30
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What does MTF mean?
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