I have Pentax K100D with the basic gear with Kit's len + DA 50-200 without a flash. I narrow down few choices for my 3rd lens which I plan to use for indoor portraits with my kids.
And my choices are below, I want to solicit opinions on the following or perhaps other lens around $300 for consideration
1. Pentax SMC FA35 f/2
2. Pentax SMC FA50 f/1.4
3. Sigma 17-70
I know many people like 50 f/1.4 but I am concerned on the longer focal length. So far I like both the basic kit's lens and DA 50-200 but for indoor, I get soft and high iso 800 pictures such as the following. I could have tried lower iso and more windows natural lighting to get sharper pictures, suggestions and techniques are welcome on getting the most from the $60 Kit's lens on taking pictures of my kids for indoor.
Many thanks,
Hin