Old & New Tele for Pentax

Hello i have a Pentax k100d, and I want buy a tele/telezoom for this camera but I have not too much money.

Taking advantage of my Camera´s possibilities, to mount any old lens for pentax, and the cheap price of these, im interested in Screwmount lens, as in bayonet K cheap lens, manual or autofocus system.

I listed some lens and the prices that I have obtained of the same one. I hope your recommendation. Thank you Very very very much!!!

Asahi SMC Pentax-M 80-200mm f:4.5 u$ 70
Takumar-F 70-200mm f:4-5.6 u$ 140
Super Takumar 200mm f:4 u$ 90
Tamron 70-210MM f:3.8-4 adaptall u$ 80
Tamron AF 70-300MM f:4-5.6 tele-macro u$ 75
TOKINA AF 75-300MM f:4.5-5.6 u$ 80

SMC Pentax FA-J 75-300mm f:4.5-5.8 AL u$ 160
SMC Pentax DA 50-200mm f:4-5.6 ed u$ 280 new
Sigma 70-300 f:4-5.6 DG APO Macro u$ 230 new
Tamron AF 75-300mm LD Macro u$ 150
Tamron AF 70-300mm f:4-5.6 Di LD Macro u$ 185

All prices include aprox u$35 of postage and handling.

And Does someone know the performance of these lenses above?

SMC Pentax A 80-200mm 4.5-5.6
SMC Pentax FA 80-320mm 4.5-5.6
SMC Pentax FA 100-300mm 4.7-5.8

Thank you very much!

Thank you

You have asked a very difficult question, not least because we do not know what the final use will be. Web use? Small prints? Large exhibition prints?

However, to make the use of your new camera as easy as possible, first of all I would suggest that you invest in A series or later lenses, that is, lenses with an "A" on the aperture ring.

Having said that, the two most user-friendly lenses for your camera do not have aperture rings.

The SMC Pentax-DA 50-200mm is a superb, compact lens of high quality and I thoroughly recommend it. It is a 35mm-equivalent of 75-300mm.

The SMC Pentax FA-J 75-300mm extends the 35mm-equivalent long end to 450mm, which is superb. Especially when you consider it focuses down to around 1.4m, allowing superb close ups of small flowers.

All the lenses you list would be suitable, but the two I mention would be an ideal choice. We have them both and they are very satisfactory indeed.

John