Hey, Mark

Adam called it 1.6  in another post :)  

I'm using the old Pentax lenses on that dark side camera you saw me with 
at GFM....

re the 100 - it allows me to be farther away from whatever I'm shooting.  

What I'd like to have now is adaptors for each of the lenses I have so I 
don't have so many
pieces to play with when I swap lenses.  

Anyway - I'm enjoying the combos  -  sounds like the exact proportion is 
affected by which particular
DSLR I'm using.

ann




Mark Cassino wrote:

>Assuming you are using a Pentax DSLR - the focal
>length compared to a 35mm camera is 1.5x greater. So
>the 28mm is a 42mm - quite a nice angle of view IMO.
>Someday I hope to find a fast 28 prime to use as a
>normal lens...
>
>Your 100mm macro is like a 150. The lenses don't
>magnify any more that on 35mm, but because the sensor
>is smaller the angle of view is narrower. It's like
>cropping a full framed 35 shot down.
>
>HTH -
>
>MCC
>--- ann sanfedele <[EMAIL PROTECTED]> wrote:
>
>  
>
>>notice how I cleverly avoided mentioning my little
>>bastard camera...
>>
>>but seriously, folks - It took me a few beats too
>>long to realize that a 
>>28mm smc Pentax lens on a
>>35 mm digital camera changes it to a less wide lens
>>-- and, I'm 
>>guessing, the bit of space between the
>>back of the lens and the camera itself, due to the
>>thickness of the 
>>adaptor also contributes to this.
>>
>>Soooo is there a chart somewhere or a formula that
>>says  28 becomes 
>>50(?)  etc ???
>>Does the difference/ proportion increase with the
>>physical length of the 
>>lens?  
>>
>>My 100mm macro seems like a 200 mm lens  - so I'm
>>really in pig heaven....
>>
>>It seems like the 28 mm still has the same depth of
>>field given any 
>>given aperature when it is
>>on the KX or the digital camera....
>>
>>ann the curious
>>
>>
>>
>>
>>
>>-- 
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>>    
>>
>
>
>--------------------------
>Mark Cassino Photography
>Kalamamazoo, MI
>www.markcassino.com
>
>Photo Books:
>www.lulu.com/cassino
>--------------------------
>
>
>       
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