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10-04-2012, 05:11 AM   #1
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Digital ready dinasours?

Legacy Pentax 67 lenses offer good quality glass for more affordable prices than the latest generation of designed for digital lenses. But there must be some reason why the newer lenses cost so much more than their venerable ancestors? What are the drawbacks of using legacy lenses for medium format digital photography? Maybe none?

10-04-2012, 06:33 AM   #2
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I think 67 lenses are relatively cheap because there isn't much demand for them since you can only use them on modern digital cameras with adapters (I think)
Secondly, they (often) don't have AF. And the coatings are different, which means more purple fringing on digital sensors, maybe lower flare resistance, things like that. On the other hand, you can control those things and considering how much you save, it can be worthwhile. Also, using those lenses you can sometimes achieve a more 'vintage' look to your photos.
10-04-2012, 06:52 AM   #3
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more purple fringing...

Until we get a digital Pentax 67 (sooner rather than later would be nice) or a modified Pentax 67 like this modified Mamiya 6 that can take a MFDB we will have to rely on adapters. Looks like there are already plenty of them that permit use of these lenses on the Pentax 645, other 645 bodies, or for stitching on Canon eos and other DSLRs. So apart from AF capability the barrier becomes lens design, coating, etc. Maybe later generations of these legacy lenses cope better with purple fringing than others???
10-04-2012, 09:02 AM   #4
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People here on PF have tested various 6x7/67 lenses on the 645D. Not all are stellar performers, apparently. The M* and some 67 generation lenses that were optically reformulated instead of just a cosmetic change appear to yield good results. But that is only a few out of the many 6x7/Takumar generation of 6x7 lenses. But some of the 645D owners here can no doubt be more specific.

10-05-2012, 08:39 AM   #5
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I think cost evolution is very different for optical glass as compared to SLR bodies.
The very high manpower input, heavy tools required to produce them, and the "noble materials" they are made of , entail much higher prices tag today than say 15 or 20 years ago.
I would compare this cost evolution trend with classical automobile's one.

Regarding 6x7 lenses optical quality with digital sensors, i have 4 of them (SMC 35/4.5, 55/4, 90/2.8 and 165/2.8) that render very good when used on my 645D.
Not even too much CAs.
10-05-2012, 08:45 AM   #6
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QuoteOriginally posted by windhorse Quote
Until we get a digital Pentax 67 (sooner rather than later would be nice)
It was confirmed at Photokina that the 6x7 mount is officially dead, so don't hold your breath on that...
10-05-2012, 06:01 PM   #7
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I use several 67 lenses on my 645D. The 45/4 has some CA in the corners that is easily fixed in Lightroom. The 55/4 is really outstanding, probably the best pentax lens at that focal length for the 645D. The 105/2.4 is sharp, fast, and focuses close. I recently picked up a copy of the 55-100/4.5 zoom and it's really impressive throughout the range; however it's also really heavy and prone to flare. Used carefully it can produce excellent results.
10-05-2012, 07:28 PM   #8
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You guys might want to tell the OP what version of the 55mm f4 you are using.


Last edited by tuco; 10-07-2012 at 12:34 PM.
10-06-2012, 04:36 AM   #9
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I'm referring to the latest 67 version of the 55/4, not the earlier 6x7 version. It seems that the newer 67 lenses are generally superior to the 6x7 and Takamur versions of the same lens--or at least as good. Most can be purchased at very affordable prices and in my opinion are real bargains considering their build quality. Of course all are manual focus, but I actually enjoy that.
10-06-2012, 08:47 AM   #10
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With P67 lenses used on digital bodies, there seems to be a pretty good correlation between success on the 67 and success on the digital capture bodies. This is not always the case when using film lenses for digital use on other camera systems however. Since there is a good correlation with P67 lenses, one could get an idea about which of the 30 optically different lenses for this system could be viable for digital use, by visiting our lens reviews here at PF.

Last edited by desertscape; 10-06-2012 at 10:42 AM.
10-07-2012, 10:38 AM   #11
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QuoteOriginally posted by klewish Quote
I'm referring to the latest 67 version of the 55/4, not the earlier 6x7 version. It seems that the newer 67 lenses are generally superior to the 6x7 and Takamur versions of the same lens--or at least as good. Most can be purchased at very affordable prices and in my opinion are real bargains considering their build quality. Of course all are manual focus, but I actually enjoy that.
Yes, i only bought latest SMC Pentax 67 lenses.
Only a few hundred (250 to 450, 800 for the fish-eye) bucks each...
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