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04-05-2014, 10:32 PM   #1
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DA*50-135, K135 & Canon 135 f2 - a quick comparision

Just bought a Canon FD 135 f2 and was wondering how it compares against our reputed Pentax 135mm lenses, so here is a quick wide-open comparison.

Update: updated with Canon FD 135 f2 @f2.8 sample now.









I made a few observations about the sharpness, bokeh and purple fringing. But would love to hear your opinions.

Note: Unfortunately, I can't stop down Canon FD 135 f2 at this moment (not sure what the issues is), hence only the wide-open comparison.

Yusuf


Last edited by yusuf; 04-19-2014 at 06:57 AM.
04-05-2014, 11:10 PM   #2
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I'm curious about what camera body you are using to compare these three lenses? Do any of your adapters require a glass interface?

M
04-05-2014, 11:28 PM   #3
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QuoteOriginally posted by Miguel Quote
I'm curious about what camera body you are using to compare these three lenses? Do any of your adapters require a glass interface?

M
I should have mention that, NEX-6, no glass adapter is required.
04-06-2014, 04:59 AM   #4
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Bokeh looks better on the Canon for me (slightly).

Sharpness is definitely the best on 50-135, but it also looks that the other 2 shots weren't focused properly.

CA control looks superb on the 50-135.

I also prefer the rendering of the 50-135, but that might be because the exposures look slightly different.

Makes me really wonder about the 50-135.. Just that damn focusing.

04-06-2014, 06:14 AM   #5
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There is nothing wrong with focusing, all the shots are best focused for that lens. Yes, 50-135 is the impressive one of the lot followed by Canon.
04-06-2014, 07:16 AM   #6
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DRTV called the Canon 135mm L as the Lord of the red rings.

Quite impressive that 50-135 beats it.
04-06-2014, 10:04 AM   #7
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QuoteOriginally posted by Apapukas Quote
called the Canon 135mm L as the Lord of the red rings.
This is not that lens.
This is the much older FD-mount manual focus Canon lens. I own the Canon 135L f2 and it is world class, in rendering, AF accuracy, and AF quiet performance and reliability. I also own the Tokina 50-135mm cousin to the Pentax DA* model and will have to compare them some day. In the past I've owned the DA* 50-135mm and find the Tokina to be superior in a number of minor ways.

M
04-06-2014, 10:38 AM   #8
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My nod goes to the DA*50-135. Sharper and better rendering.

04-06-2014, 11:42 AM   #9
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Based on those photos I would pick Canon or DA* - Canon has best bokeh hands down, better ca control than K lens, but little worse than DA*, colours ok....difficult to judge sharpness o 3 pictures only, DA* seems to have edge here....
04-06-2014, 12:43 PM   #10
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For a zoom the DA * does well against the older primes.
04-06-2014, 01:27 PM   #11
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IŽd be surprised if the modern zoom lens didnŽt do better than the film era lenses... Even being primes, modern designs, elements and coatings allow for better use of the sensor
04-06-2014, 08:35 PM   #12
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I agree with above observations. However to be fair, it's worth noting that the Canon was shot at f2 and other two at f2.5 & f2.8. So things may turn in favor of Canon once stopped down to f2.8. For some reasons, I am not able to stop it down so can't compare them at f2.8 at this moment but maybe someone else owning the same lenses can contribute.

1) DA* is sharpest, followed by Canon & then K135 at wide open.
2) DA* is absolutely superior in CA and contrast, followed by Canon & then K135.
3) Rendering, a big plus for Canon followed by DA*. Because of wider aperture f2, Canon is naturally able to offer more subject isolation and creamier bokeh. However more importantly, its ability to hold excellent sharpness & contrast at f2 creates some nice pop (or 3Dish effect).
04-19-2014, 06:59 AM   #13
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Got the Canon FD 135 fixed - so now updated the comparison with a sample shot from Canon @f2.8. As expected, it blows away all other lenses in sharpness. CA is also a lot better though DA* still holds an edge in the CA department.
04-19-2014, 12:32 PM   #14
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Did you do any comparison of extreme corner sharpness (in all 4 corners)?
04-19-2014, 07:56 PM   #15
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QuoteOriginally posted by tibbitts Quote
Did you do any comparison of extreme corner sharpness (in all 4 corners)?
Unfortunately no, I need to shoot some flat object to do that but I think that's a good idea, will try.
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