Adam,

thank's for the explanation. Looks like I missunderstood something  
there. Obviously, there are a lot of new things to learn after so many  
years. ;-)

Marcus

--
Am 11.03.2008 um 18:08 schrieb Adam Maas:

> No, there's a fair difference between those two lenses. The 28 would
> perform on the K200D like the 40 would on a 35mm body, not like the
> 40mm does on the K200D. The crop factor always applies as focal length
> is focal length. The only difference between a 40mm FF lens and 40mm
> DA lens is the latter won't necessarily cover a 35mm frame.
> Ironically, the DA 40mm is actually a 35mm full-frame design, being an
> update of the SMC-M 40mm f2.8 Pancake (albeit a very thorouhg update,
> the original did not use Aspherical elements).
>
> -Adam
>
> On 3/11/08, Marcus A. Hofmann <[EMAIL PROTECTED]> wrote:
>> Thank you for your thoughts, j.c. I am just thinking that a full- 
>> frame
>> 28mm prime would perform like a, well, somewhere around 50mm prime
>> with the K200D's smaller sensor. That would be awfully close to the  
>> DA
>> 40 that I already have, and I am not sure if I really need two primes
>> with such similar focal lengths. But I can see the idea behind it.
>> It's appreciated.
>>
>> Marcus
>>
>>
>> --
>> Am 11.03.2008 um 13:35 schrieb J. C. O'Connell:
>>
>>
>>> I would get a good 28mm prime. The sma-A F2.8 is
>>> nice if you like manual focus, the later F and FA
>>> versions would do if you want AF. But in any case
>>> a 28mm prime is very useful/high quality on DSLR.
>>> jco
>>>
>>> -----Original Message-----
>>> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf
>>> Of
>>> Marcus A. Hofmann
>>> Sent: Tuesday, March 11, 2008 6:51 AM
>>> To: Pentax-Discuss List Mail
>>> Subject: Seeking lens advice
>>>
>>>
>>> Hello.
>>>
>>> I have recently bought a new K200D. I did photograph a lot until  
>>> about
>>> 15 years ago, but have only used p+s cameras since then. So I  
>>> figured
>>> the K200D would be more than sufficient to get back into  
>>> photography.
>>> I am actually very satisfied with the camera.
>>>
>>> But the bundled 18-55mm/3.5-5.8 lens is kind of dissapointing,
>>> especially when compared to the 40mm/f2.8 limited that I also bought
>>> with the camera (mainly beacuse it was so cute), which produces
>>> beautifully sharp and crisp images. So I am now stuck with the 40mm
>>> prime and need to buy some more glass.
>>>
>>> My old analog setup contained a 50mm/1.4 Minolta prime (which I  
>>> still
>>> own), a 28-85mm/2.8-something Minolta and a 100-400mm Minolta that I
>>> loved (but which I sold). I've been digging around a little and come
>>> up with the following lenses that seem like what I want, and I'd  
>>> like
>>> to ask those of you that own one of these for their opinions.
>>> Alternatives are also welcome.
>>>
>>> smc DA* 50-135mm/2,8 ED [IF] SDM
>>>
>>> and
>>>
>>> smc DA* 16-50mm/2,8 ED [IF] SDM or smc DA 21mm/3,2 ED [IF] SDM
>>>
>>> I might also get something like the smc DA* 200mm/2,8 ED [IF] SDM
>>> later, depending on how much I'll actually use the camera.
>>>
>>> So I was wondering if the image quality of the 16-50mm/2,8 is
>>> comparable to that of the 40mm/2,8 limited, or if I should rather go
>>> with the 21mm and 40mm limiteds instead of the 16-50mm zoom. Is the
>>> 50-135mm worth the money, and are there alternatives? I like the  
>>> fact
>>> that it is weather sealed a lot. Can I use the old 50mm/1.4 Minolta
>>> (from the late 80's) on the K200D with an adaptor? Is that
>>> recommendable?
>>>
>>> I might add that I will be taking the thing into the mountains a  
>>> lot,
>>> and I like to sit in a cafe on a sunday and shoot passers by in the
>>> street.
>>>
>>>
>>> Thanks for any advice.
>>>
>>> Marcus
>>>
>>>
>>>
>>> --
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>>
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>
>
> -- 
> M. Adam Maas
> http://www.mawz.ca
> Explorations of the City Around Us.
>
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