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05-11-2014, 02:23 PM   #1
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SMC Pentax-M 35-70mm f2.8 - 3.5

Ok I was amazed - there is no lens sample gallery for this cult lens !? Wow - I decided to upload some and will urge anyone who has this lens to add them too - this lens definitely deserves recognition !



Here we go - a wide open central sharpness is outstanding at all focal lengths - don't believe me ?
Here are 3 samples - sadly I forgot to change my K10D's ISO setting fro ISO 1600 to something more suitable - so bear that in mind that the detail was compromised by a high ISO and NR in these three shots :

35mm


50mm


70mm



And here is a series of shots that were taken at ISO 200 and all at f4 -4.5 with my K10D :









>>-manntax-->


Last edited by manntax; 05-11-2014 at 02:29 PM.
05-11-2014, 04:38 PM   #2
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I recently saw this lens listed at my local camera store and I may pick it up! At 40mm, is it still F2.8? Or does it go to F3.2?
05-11-2014, 05:11 PM   #3
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QuoteOriginally posted by dugrant153 Quote
I recently saw this lens listed at my local camera store and I may pick it up! At 40mm, is it still F2.8? Or does it go to F3.2?
From my tests it appears to be f2.8 up until 50-60mm even ! the difference in light loss is so subtle that I hardly can see - remember f2.8 is only 1/2 stop faster than f3.5 - and on the diaphragm scale a 3.5 setting is clearly marked for 70mm only so I would simple use the lens as f2.8 and lit the exposure by 03-0.5 stop in post processing. At least that's what I do - in low light I keep it wide open and it's really sharp ! An excellent lens. All these shots were shot only half click stopped down !

>>-manntax-->
12-19-2020, 10:17 AM   #4
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This post needs some photos, so here we go.



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