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09-01-2017, 08:20 AM   #1
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What is the sharpest manual lens for pentax 67 / 645 ?

I'm currently looking forward to own a pentax medium format camera. But I'm very keen to lenses so I would like to research as much as I could.

By the way, I'm into portraits, weddings, and environmental prenuptials. So mid to tele prime is what I'm looking at.

09-01-2017, 09:48 AM - 1 Like   #3
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In 645 mount, the 120 A and the 35 A are probably the ones....although my 75 and 135 LS lenses are real sharp.
09-01-2017, 09:56 AM   #4
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I'm just starting to explore the wonderful world of the Pentax 67 myself, but given your interests I suspect that the venerable 165/2.8 might be your huckleberry. (I'm anxiously waiting for the first roll I shot with my copy to come back.) About the only downside I would see is that its mediocre MFD results in a pretty large (20"x16") picture area, so if you shoot a lot of "head shot" portraits, the newest version of the 200/4 might be a better bet. Otherwise, you're looking at the equivalent of the classic 85mm focal length; a nice, bright image in the finder; and "pixie dust" that seems to rival that of the classic 105/2.4.

09-01-2017, 11:00 AM   #5
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QuoteOriginally posted by CreationBear Quote
I'm just starting to explore the wonderful world of the Pentax 67 myself, but given your interests I suspect that the venerable 165/2.8 might be your huckleberry. (I'm anxiously waiting for the first roll I shot with my copy to come back.) About the only downside I would see is that its mediocre MFD results in a pretty large (20"x16") picture area, so if you shoot a lot of "head shot" portraits, the newest version of the 200/4 might be a better bet. Otherwise, you're looking at the equivalent of the classic 85mm focal length; a nice, bright image in the finder; and "pixie dust" that seems to rival that of the classic 105/2.4.
For pictorial work on the 6x7 the 45mm f4 is hard to beat.
09-01-2017, 11:27 AM   #6
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QuoteOriginally posted by gat3keeper Quote
So mid to tele prime is what I'm looking at.
The 165LS for the 6x7 is quite sharp, as is the 200 Pentax. On the long end, the 300 EDIF is one of the best. Possibly sharper than these is the 75 Takumar but it might be too wide for your application.
09-01-2017, 12:11 PM   #7
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I really never did sharpness comparisons when I was using the pentax 67 regularly back in the day but for landscape work I would concur with Cipher that the 45 is really sharp. I also like the 135/4 and the 100 macro. The only lens that I thought a notch below the rest was the 200 -- maybe it was just my copy. The 135 would work well for portraits.


If you ever want the lenses to do double duty my experiences so far with the 67 lenses are trying the 100 macro on a canon 5dii and the 135 on the K-1 with fotodiox adapters -- both with good results. The 200 had some pretty bad purple fringing when I used it on the K-1.
09-01-2017, 10:01 PM   #8
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QuoteOriginally posted by desertscape Quote
The 165LS for the 6x7 is quite sharp, as is the 200 Pentax.
Be careful of which version you are referring to: The 1970s takumar 67 200mm f/4 is known to be soft at infinity*, and has pretty spectacular fringing. The redesigned 1980s SMC 200mm f/4 is optically superior, and also has a closer MFD. The 1989 variant of the SMC 67 165mm f/2.8 is excellent optically, as is the 1980s version of the SMC 67 55mm f/4.

Avoid the 90mm LS. the Zoom lenses for the 67 are slow as hell and optically aren't anything to write home about either.

*i'm not sure if this is a calibration issue, however my lasting impression of the Pentax 67 Takumar 200mm f4 was one of disappointment.


Last edited by Digitalis; 09-01-2017 at 10:14 PM.
09-02-2017, 03:36 PM   #9
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QuoteOriginally posted by Digitalis Quote
*i'm not sure if this is a calibration issue, however my lasting impression of the Pentax 67 Takumar 200mm f4 was one of disappointment.
I was referring to the latest 200, that's why I said Pentax and not Takumar. Pentax abandoned the 4 element triplet variant (Takumar) in favor of a 5 element Ernostar design in the Pentax.
09-02-2017, 04:02 PM - 2 Likes   #10
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My A120/4 macro is blisteringly sharp on the 645Z. I haven't used it for portraits yet.





The DFA90/2.8 macro has a reputation for extreme sharpness, but it's too expensive for my amateur aspirations. And not manual of course
09-02-2017, 06:59 PM   #11
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There are only a few optically top-notch SMC Pentax 67 lenses that can be described as really sharp, however, their use is not dependent on them carrying an image over the line without any experience!

The SMC Pentax 67 55mm, 45mm and 75mm AL lenses are widely used in the landscape/scenic context, and can be used quite well in portraiture for head/shoulder shots, but the contrast and ability of the 75AL to see every fold, bulge and wrinkle may be quite off-putting. Shooting it wide open doesn't necessarily negate this! The old 105mm, long held as a "standard" kit lens, is less commonly cited but still widely used. The disadvantage with the ultrawides is their slow speed; at f4 in low light, focusing can for many people be challenging. Even more so if a polariser is used. For that reason you should have at least one, preferably two f2.8 lenses available.

The two leaf shutter lenses, 90mm (the only LS lens that can be used in MLU + LS mode) two-speed 165mm lenses can be good choices in portraiture, but require additional skills to learn to use correctly when the leaf shutter mode is engaged (chiefly for higher speed sync over the native Pentax 6x7 / Pentax 67 1/30sec). There are a few 165mm f4 lenses in use in the landscape context and also the 90mm that finds use in still life/portraiture. I do not think it is as sharp as the ordinary 90mm, and nowhere near the performance of the 75mm f2.8AL.

Takumars should be left to their present and future life as trinkets for collectors tugging at the forelocks of a long-gone era of quite ordinary optical performance.
09-03-2017, 09:52 PM   #12
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sharp

the 67 100 macro is the winner....

and the 67 400 f4 ed if is the runner up......

IMHO
09-06-2017, 05:18 AM   #13
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To really distance yourself from digital in terms of resolution go with the 67II true MF (make sure you get the 67II and not the 6X7—a huge upgrade). The 645s does offer more shots per roll and film backs, though.
In the normal to short tele range, the SMC 67 75/4.5 is really sharp (havenīt tried the 75AL), as is the (all versions) 105/2.4. The SMC 67 135/4 Macro is less sharp (outside macro), but great for portraits. Some people praise the zooms (as sharp as the prime, some say?), like the 90-180/5.6 in your prefered lenghts range (good for weddings?), if a bit slow (but we have Portra 800 (push to 1600 with no image degradation) for that). I like the 200/4 for portraits as well. The old Takumars are to be dusted off and used for B&W where they shine with wonderful, dreamy highlights.

S-T 6X7 200/4 on 6X7 MLU with TMY400


... on APS-C
[IMG][/IMG]

Happy hunting, regards Jakob

Last edited by jt_cph_dk; 09-06-2017 at 07:23 AM. Reason: added image
09-07-2017, 10:19 PM   #14
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I too have found the 400mm f4 ED-IF (big white one) to be incredible.
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