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Joe Davis
05-09-2005, 06:28 PM
Bored tonight so I was doing a Google search for camera and lens compatibility and came across this site.

I have a Pentax *ist D and am looking for some new lens'. But all this lens alphabet soup is giving me a headache. I guess what I want to know is how can I tell what lens is compatible with my *ist D? And do they make adapters that let you retrofit a different lens type to the *ist D?

I might be making this all harder than it is. But thanks for any replies.

I am also looking for a good macro lens for closeups.

Thanks

jeisner
05-09-2005, 07:38 PM
Any lens with a Pentax K-Mount will fit the ist D....

You can get an adapter to fit the real old M42 (screw mount) lenses to this ist D, but these are a little harder to work with...

If buying Pentax lenses probably easiest to stick with at least the A range (MF) and any of the newer Auto Focus ranges (F, FA, DFA, DA) the F, FA and DFA are all full frame (work with film too) lenses of various ages, the DA range will work on your digital but do not work on film....

As for brands Tamron, Sigma and Pentax all make good quality lenses, and some crappy cheap consumer lenses ;-)

What exactly are you looking for???

For macro I think the two best value for money (high quality) macro lenses are the Sigma 50mm and 105mm DG EX Macros... Just make sure to get Pentax (PK) mount versions as they make versions for all brands...

Joe Davis
05-09-2005, 09:21 PM
Thanks for the quick response. At this time I am really interested in taking pics of my kids baseball/softball games. I have this Sigma 50-500 lens in mind:

http://www.sigmaphoto.com/lenses/lenses_all_details.asp?id=3237&navigator=3

How can I tell if it will fit my *ist D?

Thanks again.

TheObiJuan
05-09-2005, 09:38 PM
Don't be so tempted by the range. The lens is very slow and heavy! It would surely be mounted on a tripod or monopod permanently. I would recommend sigma's 120-300 f/2.8, 70-200 f/2.8, 100-300 f/4, or their 80-400 OS lens.
These are all pricey but great!

jeisner
05-09-2005, 10:01 PM
Don't be so tempted by the range. The lens is very slow and heavy! It would surely be mounted on a tripod or monopod permanently. I would recommend sigma's 120-300 f/2.8, 70-200 f/2.8, 100-300 f/4, or their 80-400 OS lens.
These are all pricey but great!

Agreed the 50-500 is a monster... you would be better off IMHO with the 100-300/4 as suggested above or the 70-200 2.8 and then get the sigma EX 1.4x teleconverter so it can be both a 70-200/2.8 and a 100-300/4 (although not as good as the dedicated 100-300/4)...

The 120-300 (bit of a monster too anyway) and 80-400 are not made in Pentax mount....

However the 50-500, 70-200 and 100-300 are all available in Pentax mount...