Lenses that fit Pentax K110D DSLR with Automatic focus?

Question

I'm looking for a low-light lens F/2.8 or better that I can use on my DSLR (Pentax K110D), and still maintain the autofocus feature. I've been searching forums and lots of write-ups, but cannot get a definitive answer!

Any help is greatly appreciated!

Answer 1

Here's your shopping list:

PTX 21790 - smc PENTAX DA* 55mm f/1.4 $799.95

PTX 21700 - smc Pentax DA* 200mm f/2.8 ED (IF) SDM $1,199.95

PTX 21730 - smc Pentax DA 35mm f/2.8 Macro Limited $699.95

PTX 22190 - smcP FA 35mm f/2.0 AL $474.95

PTX 21520 - smcP D-FA 100mm f/2.8 Macro $849.95

PTX 27980 - smcP FA 77mm f1.8 Limited (Black) $1,049.95

PTX 21620 - smcP DA 70mm f2.4 Limited OUT OF STOCK $699.95

PTX 21660 - smcP DA 50-135mm f2.8 ED (IF) SDM $1,129.95

PTX 21530 - smcP D-FA 50mm f2.8 Macro $599.95

PTX 20817 - smcP FA 50mm f/1.4 $429.95

PTX 20180 - smcP FA 43mm f/1.9 Limited (Black) $749.95

PTX 21550 - smcP DA 40mm f/2.8 Limited $499.95

PTX 20290 - smcP FA 31mm f/1.8 Limited (Black) $1,299.95

PTX 21650 - smcP DA 16-50mm f/2.8 ED AL (IF) SDM $1,029.95

PTX 21510 - smcP DA 14mm f/2.8 ED AL (IF) $949.95



You can also use older Pentax compatible AF lenses by 3rd party manufacturer such as Sigma, Vivitar, etc.

Answer 2

You can't get a definitive answer if you don't know what to use the lens for. Speed is one thing for lenses but the main criteria is focal length.



So, are you going to shoot portraits? Consider the bread and butter 50mm f/1.4 lens that every photographer should have in his bag. Then, the 55mm f/1.4 SDM has a pretty fast focusing speed but at double the price. If you want a little wider, get the 423mm f/1.9 which almost looks like a pancake lens.



Want to go a little farther? Try the 77mm f/1.8.



Normal? 31mm f/1.8.



Generally, all zoom lenses and long telephotos have smaller maximum apertures. Such is a fact dictated by the laws of physics.



If prime lens prices are too much for your migrane, forget the AF and go full manual. That is where Pentax shines best.

Answer 3

I have a Pentax 50mm F/1.4 and a 40mm F/2.8. Both are great lenses. I have the older 50mm though and the auto focus is a tag slower compared to the basic kit lens.

Answer 4

Erm.. Not exactly difficult to find..



UK?.

http://www.jessops.com/online.store/products/keywordsearch.html?keyword=pentax+lens&pageIndex=1&sortProperty=Relevance&sortDirection=Ascending



US?

http://www.bhphotovideo.com/c/search?Ntt=pentax+lens&ci=15492&N=4293919655



.

Answer 5

1st buy a 40mm f2.8 DA Limited or 43mm f1.9 FA Limited (depend on your budget).

-> i choose to buy 40mm f2.8 smallest pancake, because my wife needs it for daily use.



#2nd if u need portraiture buy a 70mm f2.4 DA Limited.