Originally posted by IS050 Thanks for the comment. I found the focal length is wide enough even it is really a 36mm on the K10D. The feel and handling of the lens is great, the IQ is not bad at all. I am happy with it, as well as the 80-210mm (103A). I am thinking the next adaptall2 lends to get is the 35-80mm after seeing some nice images here.
David
The SP 36-80 2.8 has remarkable overall performance for a zoom. Used as a macro it comes close to the 90 mm in resolution..and with a 1:2 macro ratio that becomes 1:1 with the SP 2X.
The SP 60-300 is so nice I got rid of my 70-210 AF..since I never was keen on AF anyhow. Had the 25 2.5 since it was new (81?) and have wanted the 24...just missed it on ebay a few times. The SP 28-135 4.0 is pretty crisp for a wide>Tele All-round. I have pretty much any sort of mount (at least for now) except the pricey PKA. Mostly I'm using Pentax K or M42 bodies.
I also liked the Sigma YS lenses. have the M42,PK and Nikon mounts and 4 primes including the 500 mirror and 135 1.8
I'd been doing some sideline business..buying + selling and it's kind of handy how I could stick the same lens on bodies from quite a few makers.
I'd guess the 80-210 3.8 variants are probably THE biggest selling 3rd party zooms of all. Not "Great" but easily a "Best Buy". I got a 100mm Pentax Macro....on a lucky deal or I'd have paid for a Tammy 90 macro...a lens I CRAVED back in 1980. It actually costs MORE now on ebay than the new price was.
Something interesting with the 60-300SP...none of the 3 that I have had, had any zoom creep. The 80-210's tend to have a little..the Pentax 70-200's I have had...a LOT of creep. I have a 70-150 (not SP) that I have not used much. Mostly..nice and compact,about the size of my 100mm Macro or a fairly small 135.