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12-01-2020, 01:16 AM   #8356
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QuoteOriginally posted by iheiramo Quote
Could be sample variation. I've seen test results that show M85 weaker wide open than I'm ready to believe based on my copy. But from what I've read K135/2.5 is supposed to be a sharper lens than M150. Maybe just go with it and crop a little if needed.
I'm gonna be honest and say the Tak Bayonet 135 probably creams both of them. More modern optical design and cheaper to boot. It'd be my first choice if I needed a good inexpensive mid telephoto.
Just to put it into perspective, my Tak Bayonet 135 is sharper than BOTH of my copies of the pentax-m 200/4 cropped to the same focal length.

Edit: Hell I'd say the M75-150 would be a better choice too if you don't need a particularly bright lens. Probably one of the best lenses in the entire M lineup.


Last edited by ZombieArmy; 12-01-2020 at 01:23 AM.
12-01-2020, 01:31 AM - 1 Like   #8357
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QuoteOriginally posted by ZombieArmy Quote
I'm gonna be honest and say the Tak Bayonet 135 probably creams both of them. More modern optical design and cheaper to boot. It'd be my first choice if I needed a good inexpensive mid telephoto.
Just to put it into perspective, my Tak Bayonet 135 is sharper than BOTH of my copies of the pentax-m 200/4 cropped to the same focal length.

Edit: Hell I'd say the M75-150 would be a better choice too if you don't need a particularly bright lens. Probably one of the best lenses in the entire M lineup.
I wouldn't use M200 as comparison to anything. It's among the weakest in series in sharpness. Still you could be right about Tak Bayonet 135. I have no experience to comment it.

About M75-150 you are wrong. It's good for an old zoom, but no way on the level with primes.
12-01-2020, 01:41 AM   #8358
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QuoteOriginally posted by iheiramo Quote
About M75-150 you are wrong. It's good for an old zoom, but no way on the level with primes.
Maybe in terms of absolutely sharpness, but I think you're kinda splitting hairs stopped down. The added flexibility and wonderful rendering of the lens makes it a very strong pick in the M catalog and my favorite I've used so far.
12-01-2020, 05:10 AM   #8359
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I'm another fan of the 75-150mm. I've found it to be extremely good. It's one of the very few manual focus zooms that I keep around.

12-01-2020, 09:08 AM   #8360
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QuoteOriginally posted by ZombieArmy Quote
I think some M lenses can have some serious copy variation. I've had quite a few 50 1.7s go through my hands and their performance for me varied wildly unlike the earlier Takumar 50s.
Of course my sharpest M 50 1.7 is the one with a warped mount, so I can't even use it until I get around to fixing it
That is interesting. I have had two M 50 1.7s and I could not tell their pictures apart, I tested them but it was on the K20D at the time, maybe with the K-3 I would see differences...

QuoteOriginally posted by ZombieArmy Quote
I'm gonna be honest and say the Tak Bayonet 135 probably creams both of them. More modern optical design and cheaper to boot. It'd be my first choice if I needed a good inexpensive mid telephoto.
Just to put it into perspective, my Tak Bayonet 135 is sharper than BOTH of my copies of the pentax-m 200/4 cropped to the same focal length.

Edit: Hell I'd say the M75-150 would be a better choice too if you don't need a particularly bright lens. Probably one of the best lenses in the entire M lineup.
I was going to mention the Takumar Bayonet 135... I had the f2.5 version and it was even sharper than the SMC-A 135 2.8, especially wide open! I sold both because I was saving up for another lens, but later found and bought the Takumar Bayonet 135 f/2.8... and it's at least as good if not better than the f2.5 version, but the colors and rendering are basically as nice as the SMC-A 135 2.8, perhaps not quite as contrasty - more of an K or M rendering reather than the contrastier A series rendering. I'm holding on to this one despite the overlap with other lenses... it's that good...

I have seen so many great pictures from the M 75-150 but I have always had a soft spot for my SMC-A 70-210 f4 Macro, so I never bought the 75-150... there's nothing about the 70-210 f4 that makes me think I should get something better... it's beautiful in every way.
12-01-2020, 08:09 PM   #8361
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^^^^^
Flashing back. My rig with the MX for years was the M50/1.7, M28/2.8 and the M75-150/4. When SWMBO decided that manual focus and exposure was the way she wanted to learn, I had parted with the 75-150 and had the Series 1 70-210/2.8 which was beautiful but a beast. She went with the Pentax 70-210/4, which I think is still in the bag with her MX.
12-02-2020, 05:14 AM - 8 Likes   #8362
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QuoteOriginally posted by ChristianRock Quote
I have seen so many great pictures from the M 75-150 but I have always had a soft spot for my SMC-A 70-210 f4 Macro, so I never bought the 75-150... there's nothing about the 70-210 f4 that makes me think I should get something better... it's beautiful in every way.
I have both lenses and the while both are reasonably sharp edge to edge throughout the entire zoom range (at least at f8), even on FF, the 70-210 is at least slightly better. Colors are more natural and it it's slightly sharper.

My work with M lenses continues to be restricted the M 20/4:



12-02-2020, 05:21 AM   #8363
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QuoteOriginally posted by northcoastgreg Quote
My work with M lenses continues to be restricted the M 20/4:
Great clouds. Good detail and colour.
12-02-2020, 05:59 AM   #8364
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QuoteOriginally posted by northcoastgreg Quote
I have both lenses and the while both are reasonably sharp edge to edge throughout the entire zoom range (at least at f8), even on FF, the 70-210 is at least slightly better. Colors are more natural and it it's slightly sharper.

My work with M lenses continues to be restricted the M 20/4:
You have probably caused the M 20/4 prices to go through the roof with all these amazing pictures you've taken with it It is truly a gem of a lens in your hands.
12-02-2020, 07:31 AM   #8365
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75-150 seems to be a pretty polarizing lens to discuss. I've barely used mine so I can't really comment on it. I do find the one-touch setup pretty foreign to use but this will probably improve with practice. I always thought the images that I've seen shared from this lens were pretty good so it's a bit surprising to hear the negative comments. To each their own, of course, and there's always sample variation and general expectations to deal with.
12-05-2020, 02:25 PM - 1 Like   #8366
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I'm very fond of the M20/4, especially on film where it is wiiiiiiide. Not so much fun on APS-C. The M20/4 and the M100/2.8 are my most used M series lenses. I don't have the 75-150 so I cannot comment on that.


Pyramid (3) par Kris Lockyear, on ipernity
12-05-2020, 04:21 PM - 1 Like   #8367
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I don't use my M75-150 nearly enough - Here's a couple examples from 2015, using an *ist D:


12-05-2020, 05:00 PM   #8368
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Come on you guys, please ease off on the telephoto raves with brilliant example shots. I have both the M200mm and the M80-200mm, and both work very well for me, although my feeling is that the zoom is actually sharper than the prime. I have an opportunity for a cheapish A 70-210 macro (seems to be everyone's favourite) that I am trying to decide whether to buy: comparing to the M zoom and the Adaptall SP 60-300mm macro. If I look at all your posts, I will buy the A zoom and then go hunting for a M 70-150mm. That will leave me with four manual focus telezooms. I would get very little if I sell the M80-200, even though it's in extremely good condition, so sell-to-buy won't help much.
12-06-2020, 05:24 PM - 3 Likes   #8369
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QuoteOriginally posted by iheiramo Quote
Great clouds. Good detail and colour.
Thanks. The M 20/4 does very well in that kind of light. Where the lens sometimes struggle is when shooting into strong light like the sun. The contrast remains okay, but the saturation drops.


QuoteOriginally posted by ChristianRock Quote
You have probably caused the M 20/4 prices to go through the roof with all these amazing pictures you've taken with it It is truly a gem of a lens in your hands.
The lens has done well by me on both APS-C and FF. But I'm not sure I've had any influence on the price. In fact, of all the K-mount SMC 20s, it is the least expensive on the market, running generally around $300 to $350. The K 20/4 (which is somewhat rare), and especially the A 20/2.8 and FA 20/2.8, easily fetch higher prices.

Another with the M 20/4:


12-07-2020, 07:28 AM   #8370
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QuoteOriginally posted by northcoastgreg Quote
In fact, of all the K-mount SMC 20s, it is the least expensive on the market, running generally around $300 to $350. The K 20/4 (which is somewhat rare), and especially the A 20/2.8 and FA 20/2.8, easily fetch higher prices.
I was really lucky with mine and got it for 90 (along with the M85/2 for another 90). I've been looking for a K20/4 to add to my burgeoning K collection but have so far failed to find one in good condition for a sane price.
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