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10-02-2008, 11:50 AM   #496
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Has anyone got both the f/2.8 and f/3.5 version of the M28?

The 3.5 is generally regarded as a better lens, but is the difference anything noticeable, or rather "not correctable by setting the camera to a bit extra contrast"?

I find my 2.8 very good for general snapshots in (preferably) good light, and as a "trip outside" lens, being the perfect "normal" length for APS-C.

10-02-2008, 12:01 PM   #497
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Thank you both for the advice, I guessed I was doing the correct way but just need to take a step further to bracket each shot.
10-02-2008, 03:40 PM   #498
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QuoteOriginally posted by IS050 Quote
Just out of curiosity; how does everyone’s approach taken shot with the M lens and K10D? Because the M lends tend to over/under expose and yet all the pictures posted here are just beautiful.
I don't have that problem with my K200D - exposures are extremely consistent throughout the aperture range. Different focus screen makes the difference, apparently. but still, I rarely simply go with the green button suggestion, because I don't expect a camera to read my mind. I use the green button to get started, then hold DOF open and scan abut (using center-weighted metering) to judge how much over the 0.0 line the highlights will be and how much under the shadows will be. I adjust as necessary until I feel it's where I want it, then shoot. Gives me more or less exactly what I want every time.
10-02-2008, 03:43 PM   #499
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QuoteOriginally posted by KjetilH Quote
Has anyone got both the f/2.8 and f/3.5 version of the M28?

The 3.5 is generally regarded as a better lens, but is the difference anything noticeable, or rather "not correctable by setting the camera to a bit extra contrast"?
The lens resolution numbers here:

http://www.takinami.com/yoshihiko/photo/lens_test/index.html

agree with my findings when I tested my M28/2.8 against a friend's 3.5. That is, the difference was barely noticeable at all. The 2.8 version might have had more fall off toward the edges on FF, but on APS-C, they perform all but identically as far as I could tell in a very quick test. But again, the resolution numbers on Yoshihiko's site back that up.

Of course, we all know resolution isn't everything. And my test subject was not a good one for judging color or contrast. I'd just say I didn't notice any differences.

10-02-2008, 04:26 PM   #500
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To add to Marcs comments on the 28mm is that once you stop down the 28mm 2.8 to 3.5 there will not be that much difference. I would suggest though to get the A28 f2.8. Blasphemy I know in the M-Club thread.
10-02-2008, 06:49 PM   #501
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QuoteOriginally posted by Rico Quote
To add to Marcs comments on the 28mm is that once you stop down the 28mm 2.8 to 3.5 there will not be that much difference. I would suggest though to get the A28 f2.8. Blasphemy I know in the M-Club thread.

"A" settings are for wimps!


10-02-2008, 07:14 PM   #502
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I agree with jsherman. Comments like that can get you kicked off of the forum Rico. lol!!!!!

QuoteOriginally posted by jsherman999 Quote
"A" settings are for wimps!




10-02-2008, 07:29 PM   #503
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[QUOTE=KjetilH;358014]Has anyone got both the f/2.8 and f/3.5 version of the M28?

The 3.5 is generally regarded as a better lens, but is the difference anything noticeable, or rather "not correctable by setting the camera to a bit extra contrast"?QUOTE]

I tested an f2.8 against an f3.5, and there was a small sharpness difference at comparable apertures (f3.5 better at f3.5, a hair better at f4). But it wasn't enough to show up in a real-world photo, and not enough to sell one to acquire the other (in my opinion). The f3.5 front element is flatter and easier to clean, though.

Someone mentioned the A 28mm - if the A really is for wimps then you can search for the M28/2.8 version 2. It can be easily spotted, even in a bad eBay photo, because the serial number is not engraved on the name ring.
10-02-2008, 08:12 PM   #504
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QuoteOriginally posted by IS050 Quote
Hi Jshermann,
Nice pictures as always, this M20 is a nice lens and would be a great addition to my little “M” collection! I have the 50, 135 & 200, 20mm is exactly what I need for the wide end.

Just out of curiosity; how does everyone’s approach taken shot with the M lens and K10D? Because the M lends tend to over/under expose and yet all the pictures posted here are just beautiful. I know mine are just hit or missed and not consistent.
The way I have been doing is set the lens to the desired aperture, compose the shot, press the green button or use the DOF and shoot. Do you do the same or you would spend more time to make any adjustment to correct the so called ”correct exposure” set by the camera?
I know several other users have given good answers to your question, though I thought it would not hurt to throw in my two cent's worth.

Here is my flow with M lenses:
  1. Meter using green button
  2. Chimp the histogram
  3. Adjust exposure to shift the histogram
  4. Take some pictures

Alternatively, I determine the green button exposure at f/5.6 and manually adjust the shutter speed should I want to shoot at a different aperture. Most M-mount lenses expose accurately at f/5.6.

Having said that, I can add that I have two lenses that consistently produce correct exposures regardless of aperture using the green button. Those are my Tamron 70-150/3.5 and Pentax-M 200/4. Go figure.


Green button, no adjustments!

Pentax-M 200/4

Steve
10-09-2008, 08:33 PM   #505
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Has anyone tried the M40-80 zoom?
No one has reviewed that one yet!
10-10-2008, 09:12 AM   #506
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QuoteOriginally posted by stevebrot Quote
I know several other users have given good answers to your question, though I thought it would not hurt to throw in my two cent's worth.

Here is my flow with M lenses:
  1. Meter using green button
  2. Chimp the histogram
  3. Adjust exposure to shift the histogram
  4. Take some pictures

Alternatively, I determine the green button exposure at f/5.6 and manually adjust the shutter speed should I want to shoot at a different aperture. Most M-mount lenses expose accurately at f/5.6.
Except M lenses where the widest aperture is f/5.6, such as my M 400/5.6. To meter it, I must use f/8, f/11 or f/16. It almost seems that the lenses have to be down one stop to meter properly on my k10d.
10-12-2008, 05:05 AM   #507
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Some nice colors, taken with M28/2.8:





10-12-2008, 12:36 PM   #508
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panagor : I like very much the second one !
10-12-2008, 07:26 PM   #509
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Very nice pictures of some great fall scenes! Yesterday I went out to shoot some pictures for the Penxtaxium/World Pentax Day. I brought several lenses with me, but rarely found reason to use anything but the M28/2.8. All three of the pictures I submitted were shot with it:





10-15-2008, 03:54 AM   #510
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M100/f2.8

Finally got around to upload some photos taken with M100/f2.8 lens:
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cheers
Kenny
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