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Old Oct 11, 2006, 4:20 PM   #1
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Just to perk up the day, since it is only 36F out and cloudy today, I thought I would test two 200mm Pentax lenses I have. The first is my M 200mm f/4 and the second is my A* 200mm f/2.8, both shot at f/8.



I find it interesting how well the M200 compares to the more expensive A*200.



Tom
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Old Oct 11, 2006, 4:39 PM   #2
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Yes, that's interesting. Maybe it's very subjective, and maybe I just try to rationalize my buying the A* 2.8, but I find that pic a tad more contrasty. The difference is very small, though. How do they compare at f4?

Kjell
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Old Oct 11, 2006, 5:06 PM   #3
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bilybianca wrote:
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Yes, that's interesting. Maybe it's very subjective, and maybe I just try to rationalize my buying the A* 2.8, but I find that pic a tad more contrasty. The difference is very small, though. How do they compare at f4?

Kjell
Prime lens at this level is difficult to judge quality. I would recommend Tom to re-shoot F5.6 as it may not be fair to the M F4 lens to be tested wide open.
See what he thinks?

Daniel
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Old Oct 11, 2006, 5:26 PM   #4
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I'd say a comparison at f4 is very relevant. If the difference between the two is as small as at f8, then all the price difference is about being or not being able to open up from f4 to f2.8. If there is a significant difference at f4 then maybe the A* is worth those extra bucks.

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Old Oct 11, 2006, 5:48 PM   #5
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It is getting dark here now so I will have to wait until tomorrow, but in my mind the extra cost of the 200 2.8 is the faster glass, which is why I bought mine. Possibly a test at 4 and 2.8 would be more fair?

Tom
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Old Oct 11, 2006, 6:07 PM   #6
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OK here you go!

M200 @ f/4


A200 @ f/2.8


A200 @ f/4


Tom

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Old Oct 11, 2006, 6:12 PM   #7
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ennacac wrote:
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OK here you go!

Tom
From my laptop screen, the F4 shots are close.
http://forums.dpreview.com/forums/re...ssage=20414974
Just saw this thread. Interesting read.

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Old Oct 11, 2006, 6:42 PM   #8
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to me the M at f4 is better than the A at 2.8
at f4 both are really close but the A is a little sharper. i think the M holds it's ground very well for being $100s less expensive..

roy
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Old Oct 11, 2006, 6:51 PM   #9
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I agree the M200 is a great lens, although I was not that impressed with it with my film cameras, but that is one of the joys of the small half frame sensor. I still think the extra money for the faster A*200 is worth it, since you can use it in lower light situations than the M200, but then it is much larger than the M version too.

Tom
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Old Oct 11, 2006, 6:57 PM   #10
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robar wrote:
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to me the M at f4 is better than the A at 2.8
at f4 both are really close but the A is a little sharper. i think the M holds it's ground very well for being $100s less expensive..

roy
Recently there has been very few * lens at all at ebay. The diff in transaction price is more than $100.
Chance is high that the A*200mm at 3.5 would have justified the premium.

Daniel
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