Originally posted by nj1975 I am about to buy my first lens (other than the 18-135 WR lens I bought along with my K5II). I want a lens which will allow me to take photos of young kids indoors without having to use flash and also of my 5 year old niece's ballet shows. I was waiting for the Sigma 18-35 f1.8 to be reviewed with the hope that it would meet my needs and I would buy one, however I am concerned about the reports of problems with focusing. I then thought that I had made a decision with the Pentax 35mm f2.8 Macro DA Ltd Lens, however I have since learnt that focus will be slower due to it's macro nature. So now I am confused as to what I should buy. Any suggestions would be most appreciated - my budget is approx £500 but I would go to £600 for the right lens.
Indoors: Get a Tamron 17-50 f2.8. Cheaper than other lenses in its class, yet arguably performs better. That should be great for kids running around in less than ideal (in terms of lighting) conditions.
My favorite review of that lens is actually from a Disneyland blog:
Tamron 17-50mm f/2.8 Lens Review - Disney Tourist Blog
As for your ballet shows, that would require some sort of fast telephoto. There are unfortunately no cheap options in this regard (in terms of zooms). But one tele lens that I use for events is the Tamron 90mm Macro. It's kind of janky, but it works well for events where you are focusing on the same general spot (such as an event where you're facing a stage, or someone is speaking in front of an audience). As a bonus, it's a macro and portrait lens to boot.
That's actually my work kit (I work at a newspaper, so I cover a few events): Between the 2 lenses, I'm good to go.
You can probably get both for under £600.
Hope that helps.