Hi Mark
Could you please give me a your view on third party lenses in that range
300-500mm, fixed lenses or zooms.
Since I can not afford a Pentax one and need something not to heavy, what
would you recommend. Others told
me about a Tamron SP 300, what about mirror lenses, useful or crap? I see
some very cheap Makinon 500mm mirror
lenses here, but for their cheap prices, it can not be true, right?  ;-)

Wondeful bird shots, I would love to have a lens (and your eyes/skills) like
that.....

thanks alot in advance
Markus



>>-----Original Message-----
>>From: Mark Cassino [mailto:[EMAIL PROTECTED]
>>Sent: Wednesday, May 11, 2005 12:19 AM
>>To: [email protected]
>>Subject: Re: 500mm Zooms
>>
>>
>>I used to own a Takumar 500 f 4.5.  Not the SMC version. It was a unique
>>lens in that someone had modified it by gluing part of a screwmount to K
>>adapter to the lens - making it more or less a K mount lens (it
>>would only
>>mate to K mounts, but it would not lock into place.)
>>
>>Some sample shots taken with it (these are old photos) -
>>
>>The extraordinarily rare and elusive Rock Dove (har!) -
>>
>>http://www.markcassino.com/galleries/birds/0204b35.htm
>>
>>red bellied woodpecker -
>>
>>http://www.markcassino.com/galleries/birds/0204b36.htm
>>
>>Blue Jay -
>>
>>http://www.markcassino.com/galleries/birds/0204b52.htm
>>
>>Another Jay -
>>
>>http://www.markcassino.com/galleries/birds/0204b50.htm
>>
>>Chickadee -
>>
>>http://www.markcassino.com/galleries/birds/0204b56.htm
>>
>>The latter is a crop from a Kodachrome 64 slide - it really does
>>not hold up
>>at bigger sizes. the others are all printable at Super-B size with no
>>problems, lots of detail.
>>
>>I shot lots with this lens but replaced it with the A* 400 f2.8,
>>which with
>>teleconverters is much sharper, though it can burn you in the
>>Bokeh dept. It
>>should be noted than the A*400 cost a whole order of magnitude
>>more than the
>>Takumar 500 f4.5!
>>
>>The stop down aperture was not a major issue once you got used to it.
>>
>>This was a very high resolution lens, capable of producing great
>>results on
>>film, but it has a major degree of chromatic aberration. I don't
>>know how it
>>would do on digital bodies. One plus for APS sized digitals -
>>this lens has
>>a minimum focusing distance of 10 meters, so you need to use tubes
>>(sometimes lots of them) for smaller birds. That would cause
>>vignetting on
>>film -probably would not be a problem on *ist-D / DS's.
>>
>>There was a thread on photo.net where this lens was panned by numerous
>>people who never used it, based on their 'understanding' of the laws of
>>physics and how pronounced the CA would be.  In real life the
>>lens is quite
>>good - not on par with the best of the best but probably the best
>>bang for
>>the buck for big glass. As for the photo.net thread - it underscored the
>>validity of the saying "Those who know it all have the most to learn."
>>
>>- MCC
>>
>>(who knows it all and is busy learning.... :-)
>>- - - - - - - - - - - - - - - - - - - -
>>Mark Cassino Photography
>>Kalamazoo, MI
>>www.markcassino.com
>>- - - - - - - - - - - - - - - - - - - -
>>----- Original Message -----
>>From: "Christian" <[EMAIL PROTECTED]>
>>To: <[email protected]>
>>Sent: Tuesday, May 10, 2005 1:56 PM
>>Subject: Re: 500mm Zooms
>>
>>
>>>
>>> ----- Original Message -----
>>> From: "Tom C" <[EMAIL PROTECTED]>
>>> To: <[email protected]>
>>> Sent: Tuesday, May 10, 2005 1:51 PM
>>>
>>>> I find it a little annoying, but not $400 -$500 so...
>>>>
>>>
>>> Cool.  I was always curious about that lens and the Takumar equivelent.
>>> Please post some pictures taken with it when you can so we can
>>see how it
>>> performs.
>>>
>>> Christian
>>>
>>>
>>
>>


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