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01-08-2010, 06:05 PM   #46
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QuoteOriginally posted by Asahiflex Quote
The lens is rare, but here are a few samples made with the SMC Pentax 1:2/28, which is optically the same as the Carl Zeiss 28mm f/2 Distagon 'Hollywood', designed by Erhard Glatzel. The lens features floating elements to provide better results at closer ranges.
I was waiting for somebody to bring out samples from this lens (or the Zeiss 28/2) as soon as I saw the thread come up! Thanks Peter. Only wish I had one myself!

01-08-2010, 06:38 PM   #47
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QuoteOriginally posted by Asahiflex Quote
The lens is rare, but here are a few samples made with the SMC Pentax 1:2/28, which is optically the same as the Carl Zeiss 28mm f/2 Distagon 'Hollywood', designed by Erhard Glatzel. The lens features floating elements to provide better results at closer ranges.
Now that's what I'm talking about!
bloody fantastic!
01-08-2010, 11:15 PM   #48
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QuoteOriginally posted by JohnBee Quote
Now that's what I'm talking about!
bloody fantastic!
Something tells me that it was not cheap...

Steve
01-10-2010, 04:20 AM   #49
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Just found a shot that could be used.

Only from a Super Takumar 28mm f/3.5


Also this lens really does work nicely when you want extra magnification when using extension tubes ... like this:



01-10-2010, 06:43 AM   #50
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K10D + M28/2, both at f2.0



01-10-2010, 12:07 PM - 1 Like   #51
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Super Ozeck II 28mm f/2.8 macro



01-10-2010, 12:12 PM   #52
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QuoteOriginally posted by Mechan1k Quote
Only from a Super Takumar 28mm f/3.5
The Super Tak 3.5 never ceased to impress with it's above average bokeh and sharpness.
Though I've always found it to be rather unfortunate that it was limited to 3.5, It's still impressive
01-10-2010, 12:26 PM   #53
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It's interesting to see the difference in bokeh between the K 28mm F3.5 and K 28mm F2.0. I am not sure which one I like the most.

01-10-2010, 01:15 PM   #54
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QuoteOriginally posted by JohnBee Quote
The Super Tak 3.5 never ceased to impress with it's above average bokeh and sharpness.
Though I've always found it to be rather unfortunate that it was limited to 3.5, It's still impressive
it has an impressive bokeh alright. also felt the same that it could had gone atleast at f2.8. that would had been wonderful.
01-11-2010, 03:43 PM   #55
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QuoteOriginally posted by JohnBee Quote
The second one looks nice.
1.8 sounds pretty darned impressive for a 28mm too.
How do things look around 2.8?
Thanks.
The lens actually allows the choice of "f/1.7" on my K100D.

What particular aspect are you interested in for a f/2.8 shot?

Note that I exchanged the images in my post showing the three Sigma 28/1.8 shots. I wasn't happy with how mushy they looked so I tried a different sharpening method.
01-11-2010, 04:17 PM   #56
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QuoteOriginally posted by Class A Quote
What particular aspect are you interested in for a f/2.8 shot?
I was really wondering how the 28/F2 performed at 2.8. IOW. how it measures up against the 28mm 3.5 and if the extra stop is warranted or not in terms of IQ.

PS. I grabbed a 28mm 3.5 off eBay last night [dancing banana here]. I already owned a Super Tak(m42). but the adapter deal never really appealed to me so I'm pretty excited about getting my hands on that one for spring.
01-11-2010, 04:41 PM   #57
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What is your experience with bokeh and aperture in general? When testing most of my lenses I find the bokeh most pleasing when stopping down 0.5 to 1 from wide open.

Kind regards
.lars
01-11-2010, 06:27 PM   #58
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I agree entirely with Steve on this one. Certain lenses should be considered 'film' lenses. Sure, you can use a 28mm on a dSLR but I'm not sure exactly what is expected in regards to bokeh on a wide angle lens.

The reason that Pentax only endowed these lenses with 5 blades is that they were designed for landscapes and group shots. The fact that the crop factor has thrown these lenses into the standard FOV category doesn't change what they were designed to do.

IMO these should be categorised along with FF fisheyes. they have their uses on a crop sensor, but they're reletively limited.
01-11-2010, 06:38 PM   #59
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QuoteOriginally posted by keyser Quote
I agree entirely with Steve on this one. Certain lenses should be considered 'film' lenses. Sure, you can use a 28mm on a dSLR but I'm not sure exactly what is expected in regards to bokeh on a wide angle lens.
A 28mm on an APS-C camera is not a wide angle lens anymore.

You are right that lenses initially developed with a wide angle applications in mind may not be optimal as APS-C normal lenses but for example the Sigma 28/1.8 has nine aperture blades and a very useful bokeh. I don't see how it's use on an APS-C sensor camera would be anymore limited then a lens that was purpose designed as an APS-C normal focal lens.

So your statement may apply to some FF wide angle lenses, but probably not to all.

Last edited by Class A; 01-11-2010 at 07:09 PM.
01-11-2010, 07:39 PM   #60
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QuoteOriginally posted by Class A Quote
A 28mm on an APS-C camera is not a wide angle lens anymore.
not anymore, that's why it had become an ideal focal length for portraits. too bad the 28/3.5 wasn't made any faster. not because it was made as a wide lens, but because it has a good bokeh even at f3.5. yes, I know there's an f2 and f2.8, but I prefer the sharpness and bokeh rendering of the slower 28.

Last edited by Pentaxor; 01-11-2010 at 11:17 PM.
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