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03-28-2012, 08:42 AM   #1
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Honest opinions of the M40-2.8

Does anyone here have the M-series 40mm 2.8 lens and love it?

I just don't enjoy using mine... The images are sharp enough (from f4) but they come out a little 'wanting'...

It is small but that's just not enough...

03-28-2012, 08:54 AM   #2
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It's not as good as the DA version, not even close IMO.
03-28-2012, 09:04 AM   #3
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If you look in the lens reviews section, you'll see that most folks aren't thrilled with it.

Probably a lens for the completists.
03-28-2012, 09:08 AM   #4
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Think I may ebay my copy... It looks good on the ME but thats about it! (might sell the ME with it...)

03-28-2012, 10:33 AM   #5
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QuoteOriginally posted by DaveHolmes Quote
Does anyone here have the M-series 40mm 2.8 lens and love it?

I just don't enjoy using mine... The images are sharp enough (from f4) but they come out a little 'wanting'...

It is small but that's just not enough...
When my MX was still working properly I wasn't impressed with M-series 40mm. I didn't try it on my *ist DL before I sold the lens.
03-28-2012, 07:21 PM   #6
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MFD is 60cm.

DA40XS came out and I think M40 is over price compared to it at the price of today.
03-28-2012, 07:56 PM   #7
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I am satisfied with my copy, for the price I paid it's quite good. I had one before in my film days, went on a 7-day Sierra hike with only that lens (instead of the usual 24-50) and liked the results. I haven't had copy #2 for long, having picked it up here about a month ago.

When budget allows I'd like to replace my Rikenon 28mm and the M40 with DAs 21 and 40.. but that day won't be here for several months. I have a 50/1.4 but enjoy the M40 more than that bulky beast.
03-28-2012, 09:19 PM   #8
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The M40 is decent but not outstanding. I picked one up very cheaply many years ago. Don't use it much except when space is tight. The M 50/1.7 and 1.4, among others, are generally more useful and often cost less.

John

03-28-2012, 09:25 PM   #9
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The SMC PENTAX-M 1:2.8 40mm is really difficult for me to focus on a dslr ( compared to say an MX)
The DOF is nearly as narrow as a 50mm, ( see the charts at f/4) but the focus ring span is less, and the grip is miserably thin.
I can't turn the focus finely enough for the FI to catch up - it is guesswork.

And on a cropped sensor, we have to blow it up more, so we see the focus errors more, in my case particularly at longer distances.
03-28-2012, 10:24 PM   #10
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QuoteOriginally posted by DaveHolmes Quote
Does anyone here have the M-series 40mm 2.8 lens and love it?

I just don't enjoy using mine... The images are sharp enough (from f4) but they come out a little 'wanting'...

It is small but that's just not enough...
Funnily, after trying a few M lenses, this is the only one I decided to keep. I'm not sure why I never reviewed it so far - I certainly kept posting positive comments when this question was asked here or elsewhere - anyway, I now reviewed it here. I like its output wide open and I think it works great for portraiture.

Here's a sample image:

03-29-2012, 02:28 AM   #11
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All my good shots from my M40 seem to be BW. So maybe there's something wrong with the colours, but otherwise it seems to produce fine images. (I feel the same way about my Tamron 28-75.)
03-29-2012, 05:56 AM   #12
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I can't speak to the optical quality of the lens but physically I found it too small. It just did not "feel" right. Subjective I know but it stopped me from buying one.

Tom G

Last edited by 8540tomg; 04-01-2012 at 05:36 AM.
03-29-2012, 06:22 AM   #13
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It's an ok lens as some claimed above. Not as good as the DA40 or the DA40XS. Optically it's not bad, but the DAs are better, even the M50/1.7 is better. The another drawback of this lens is the minimum focus distance. The DA 40s have a minimum focus distance of 40cm, but the m40/2.8 can only focus down to 60cm.

Last edited by frank; 04-01-2012 at 02:48 AM.
03-30-2012, 09:20 AM   #14
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Of all the m-lenses I've had, I did not like the 35 and 40 mm.
Not really sharp and no vivid colors.
I do like my K35/3.5 and Vl40/2.0 though !
03-30-2012, 09:32 AM   #15
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Exactly as Frank said. Had one, aside from the novelty of being a pancake, it is just so-so.
In fact there are other Tessar design pancake lenses from other manufacturers in the 40-45mm focal length that trounce this Pentax pancake.
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