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10-23-2010, 12:26 AM   #16
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It's like Marilyn Monroe the playmate versus Pamela Anderson the playmate. I'm the Marilyn guy. A lot of guys wouldn't care. As you say it cuts down your options.

10-23-2010, 09:44 AM   #17
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I'm with you on Marilyn.

Those options are the widest + fastest I could find, including screwmount. I didn't look to other camera makers, but I think that your tastes are far too specific... it DOES sound like you want a Leica and want to spend an absurd amount of money to get a compact fast wide-angle that is also sexy and metal. You have to undrstand that super wide lenses are not going to have super low f-values because the f stop is relative to the focal length, which is short here. For a lens this wide to be super fast, however, size will be necessary to get the diameter up. Really what you need to do is stop comparing f stops between lenses with a different focal lengths and go and try the things. I think there is something out there that will be enough for you, but you are really gonna have to try it for yourself instead of thinking of very specific reasons why a hypothetical lens isn't good enough for you (I think the FA 24 2.0 would be your best bet but it's too large? It is NOT that large).

However, there might be some Zeiss screw mounts that you could use. I do not know anything about Zeiss.
10-23-2010, 11:02 PM   #18
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Paperbag,
I don't get what Pentax's problem is with such slow glass lately. The Zuiko 21mm f2.0 is 250g and 44mm long. Which proves small, fast and quality can exist.
A 35mm f2 was a FF staple. Everyone made one. Cosina now makes a 25mm f0.95 MFT.So it's

Last edited by troglodyte; 10-23-2010 at 11:10 PM.
10-23-2010, 11:08 PM   #19
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not like it's impossible.
I don't get why the 35mm equivalent, or 21-24mm on various aps-c sensors, is neglected these days. It's the journalist focal length. It's very important.

10-23-2010, 11:16 PM   #20
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When I finally get off this cell phone hopefully in a few days and on a real computer, I'll upload a few pics showing the difference between my A and DA lens.
I think I might have to give up and give David a ring, since the Zuiko 21mm f2 isn't on his site
10-24-2010, 12:14 AM   #21
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Interesting, I have SMC-A 50 1.4 that seems to be 2/3 stops faster at any given f-stop than all my other lenses, which are all very consistent.

example: if proper hand held metering requires an exposure f4.0, and looks accurate with all other pentax lenses, I know if I use the 50mm, its f5.0 - f5.6

Its as if its really a extra fast 50, like a 50 f1.0 but its not...but i pretend that it is...
10-24-2010, 12:47 AM   #22
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ramair,
Maybe the A lenses are magical after all!
10-24-2010, 07:46 AM   #23
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The K 55 1.8 I have lets in more light than the A 50 1.7.

I will agree that the A series have some magic to them . I find it is more of a colour and contrast snap, than it letting more light in. While the coatings have changed on the 50mm 1.7, the optical design remained the same from the M era to the FA era.

However I think what you want can be generally found in the pentax line up. Their line up is a little "slow" but you will notice that wide open, these lenses actually look really good. Most fast lenses really require you to stop them down 2 steps to get good IQ, while many slower pentax primes look great wide open (and save on size in the meantime).

You have consciously decided that 90% of the lineup is too big or too plastic within your specifications, so no one can help you. I'm not sure why... many of the primes I have mentioned would give you a great picture... your complaint is because you are not getting the picture you desire, but your criteria is aesthetic...

The K7 is a better camera in situations where the lighting is good. My k20d look phenomenal with a flash, lighting, or outdoors because ISO 100 is plain CLEAN.

That said, you could also consider a K-X as a backup camera for low light. You could comfortably shoot your 21mm at iso 1600 and blow away whatever you are getting with the K7 at ISO 800. It would be cheaper to buy that body than the super fast lenses you are talking about. Consider this... the 21mm 3.2 is a GREAT deal build quality and IQ wise compared to the 1000+ dollar lenses that are f2 with the same build quality. The K-X will be sold at a great price this holiday season, I'd bet. Besides the K-X plus a LTD prime will be really compact and nice to work with.


Last edited by paperbag846; 10-24-2010 at 09:47 AM.
10-24-2010, 07:56 AM   #24
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QuoteOriginally posted by troglodyte Quote
Paperbag,
I don't get what Pentax's problem is with such slow glass lately. The Zuiko 21mm f2.0 is 250g and 44mm long. Which proves small, fast and quality can exist.
A 35mm f2 was a FF staple. Everyone made one. Cosina now makes a 25mm f0.95 MFT.So it's
Take care when comparing not only different lenses but also different mounts. Micro four-thirds is 1/4 the area of 35mm FF. Mount is mirrorless so the build is smaller and desing can be different to SLR glass. That's basically why rangefinder glass is smaller most of the time. Also, 25mm in M-4/3 is 50mm FF equivalent angle of view.
10-24-2010, 11:10 PM   #25
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Paperbag,
I'll look into the 20mm A2.8. $600 is a bit much for such a slow piece of A glass. The A1.2 goes for that.
So far it's between the 20mm A2.8 and 21mm Zuiko f2.
10-25-2010, 12:05 AM   #26
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Hi all
This may sound dumb but is the extra light on the A 50 compared to DA21 because the A 50 is ff ie the larger elements (in width ) are catching more light on a APC sensor?
10-25-2010, 04:31 AM   #27
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QuoteOriginally posted by dbs Quote
his may sound dumb but is the extra light on the A 50 compared to DA21 because the A 50 is ff ie the larger elements (in width ) are catching more light on a APC sensor?
in short,no.

I will also say that although the A50mm f/1.2 and the K 50mm f/1.2 are very expensive, they are the most efficient when it comes to light transmission.
10-25-2010, 06:33 AM   #28
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QuoteOriginally posted by troglodyte Quote
Paperbag,
I'll look into the 20mm A2.8. $600 is a bit much for such a slow piece of A glass. The A1.2 goes for that.
So far it's between the 20mm A2.8 and 21mm Zuiko f2.
The A 50 1.2 is a 50mm lens, which means that you cannot compare the light gathering abilities of that 50mm lens at 2.8 with the 20mm lens at 2.8.

There is also the 24mm 2.0...

And the K-X, which will make the differences between 1.4 and 2.8 less of an issue! You can get the K-X for 600 or less these days...

I feel like you are not listening.
10-25-2010, 06:55 AM   #29
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QuoteOriginally posted by summonbaka Quote
Take care when comparing not only different lenses but also different mounts. Micro four-thirds is 1/4 the area of 35mm FF. Mount is mirrorless so the build is smaller and desing can be different to SLR glass. That's basically why rangefinder glass is smaller most of the time. Also, 25mm in M-4/3 is 50mm FF equivalent angle of view.
The Zuiko 21mm f2 is a 35mm Full Frame lens for the Olympus OM System. It predates 4/3 by a lot.

EDIT: Oh but if you're talking about the 25mm f0.95, then you are correct. Didn't catch that.
10-25-2010, 12:18 PM   #30
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Paperbag,
I am listening! :P
I've also been listening to my heart too. It seems part of the real problem is manual focus. Can that alter a picture's look dramatically? I've locked up my da21 for the past week and only used my A lens. I rarely use this
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