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04-21-2012, 06:21 AM   #16
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If you are looking to "go light", I wouldn't recommend the Sigma 28/1.8. It is a big prime lens, and on the heavy side, too.

04-21-2012, 06:36 AM   #17
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I have the 28/1.8 and love the close focusing ability. It makes it a much more versatile lens. One advantage it has over the 30/1.4 is that it is an FF lens.

If Pentax somehow manages to not price themselves out of business (greetings to Ned "We didn't raise prices" Bunnell) an FF camera is bound to appear at some point in time.

The 30/1.4 may have a bit more magical bokeh. Not sure.
04-22-2012, 06:25 AM   #18
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Sigma stretched the apeture hike too much with the 1.8 series 20/24/28 full frame lenses. I experienced the 20/24 and hate them and use to have the old 1.8/28 which was OK for film. The lenses are quite big, wide open not very good and mechanically not very nice.

The 30 is designed for APS-C, is a modern design and will serve you better.
04-22-2012, 04:08 PM   #19
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QuoteOriginally posted by zapp Quote
Sigma stretched the apeture hike too much with the 1.8 series 20/24/28 full frame lenses.
Not supported by any of the tests I've seen. IIRC, the 28 was the best of the three, but good copies of the other two should be fine wide open as well.

QuoteOriginally posted by zapp Quote
The lenses are quite big, wide open not very good and mechanically not very nice.
The lenses are big in order to reduce vignetting. Anyone looking for compact, should indeed look elsewhere.

My 28/1.8 is just fine wide open.

Mechanically, it is rather solid, the focusing has good feedback, and even though its 9 blade aperture blade mechanism seems to be tiny, it closes and opens in perfect symmetry without any jaggies whatsoever. It puts lenses like the FA 50/1.4 with its jaggies beyond f/2.8 or so to shame.

04-22-2012, 04:37 PM   #20
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QuoteOriginally posted by Class A Quote
Not supported by any of the tests I've seen.
Look at Sigma AF 20mm f/1.8 EX - Review / Test Report - Analysis
04-22-2012, 04:42 PM   #21
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QuoteOriginally posted by TOUGEFC Quote
Theres quite a few good spots, mental asylum's and leper colony's are my favorites.
I like to hit mental hospitals, hospitals, old schools, churches and such. They are being demolished at a rapid pace the past few years though. It is amazing how many sites the past 7 years or even the past 1.5 years that have been knocked down.
04-22-2012, 05:15 PM   #22
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QuoteOriginally posted by Blue Quote
I like to hit mental hospitals, hospitals, old schools, churches and such. They are being demolished at a rapid pace the past few years though. It is amazing how many sites the past 7 years or even the past 1.5 years that have been knocked down.
Quite true. Hit the old spots while you can! The best "abandoned/ derelict/ decrepit/ grunge" photography spot in Toronto (360 view here) was "renovated" last year and now hosts an upscale "farmer's market."
04-22-2012, 11:06 PM   #23
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QuoteOriginally posted by lytrytyr Quote
  1. The review is for the 20mm. The OP was asking about the 28mm.
  2. From the review "At f/1.8 the center resolution is already quite fine but the borders are very poor. ". "Quite fine" at the centre isn't too bad for wide open.
  3. Photozone reviewed a rather badly decentered copy. It stands to reason that a good copy would have measured better.


04-23-2012, 05:59 AM   #24
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QuoteOriginally posted by Class A Quote
The review is for the 20mm. The OP was asking about the 28mm.
My response addressed your questioning of the comment made by @zapp about the 20/24/28 lenses.
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