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02-27-2007, 05:58 PM   #1
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SMC DA 50-200mm and Vignetting?

Hi,

Can anybody tell me if they have used the SMC DA 50-200mm f/4-5.6 ED on a Pentax film camera body with any success?

As it's a DA lens the image circle is supposed to be smaller and Pentax tells us that it vignette's on 135 film stock and is not suitable. However the 40mm pancake is also a DA and there are numerous people who report that they are happily using it for shooting 135 and it doesn't cause vignetting problems.



So what's the verdict? Can I use it with my *ist (35mm) or will I have to go with the 75-300mm FA J f4.5-f5.8 AL SMC instead.

The reason why I ask is that I want my kit to be as light as possible for when I'm out and about on the riverfront. Lugging my GX-1L, DA 18-55mm, DA 55-200mm, Bigma and tripod can be tough as it is. I love shooting 135 but adding in extra lenses just adds to the weight.

02-27-2007, 06:09 PM   #2
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The only reason the DA pancake (40mm) works on film bodies is that it's based on the same optical construction as the M 40mm pancake. All the other DA's are not compatible with film SLR's- the DA 50-200mm is usable at 200mm, but you'll get a great big circle at 50mm

I'd recommend the FA 80-320mm over the FA J, BTW.

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02-27-2007, 08:52 PM   #3
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Nice! so it is true! Hey if they are the same formula, howcome the M 40 only gets average to good IQ ratings while the DA40's been nothing but sharp sharp sharp?

Haha, I just got a really funny thought. How many Industar 50/3.5 M42 Mount pancakes can you buy with $300? Some auctions give you like 5 or even 10 lenses.
02-27-2007, 09:30 PM   #4
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QuoteOriginally posted by FotoPete Quote
Nice! so it is true! Hey if they are the same formula, howcome the M 40 only gets average to good IQ ratings while the DA40's been nothing but sharp sharp sharp?

Haha, I just got a really funny thought. How many Industar 50/3.5 M42 Mount pancakes can you buy with $300? Some auctions give you like 5 or even 10 lenses.
They're nearly identical, but from test shots, the color balance seems different, and so does the angle of view. It's probably because the DA version features superior "ghostless" coating, 9 aperture blades (rather than 5) and less refractive lens elements (see below).

DA 40


M 40



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02-28-2007, 03:03 AM   #5
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In addition to Mo's excellent reply, with an APS digital you are only using the center, sharpest, portion of the lens, where as with the M40 and film, edge sharpness (or lack of) comes into play.
02-28-2007, 03:54 AM   #6
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QuoteOriginally posted by FotoPete Quote
Haha, I just got a really funny thought. How many Industar 50/3.5 M42 Mount pancakes can you buy with $300? Some auctions give you like 5 or even 10 lenses.
At the moment, there is a lot of six at a "Buy It Now" price of $75.
02-28-2007, 07:42 AM   #7
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Wow, they look like they're in really good shape! Haha its the first Industar auction that I've seen the seller mention that its a Tessar copy.

$30 is a pain buy if you got like a group of shutterbug friends you can all get a russian pancake.

Currently I'm broke. my last LBA pwned me. Still in the bloody mail and the seller is in the SAME PROVINCE!
03-01-2007, 11:55 AM   #8
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Original Poster
Thanks for the comments guys.
It was just a thought. I was pretty sure that it would vignette but just wanted to check

I guess an 80-320mm is in order then. Best get some overtime in!


Last edited by Trawlerman; 03-01-2007 at 11:57 AM. Reason: Spelling
05-01-2007, 10:58 AM   #9
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I heard somewhere that DA 70 works on film as well. Someone here that own this lens could say anything about this?
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