Hi,All,
Having just joined birding uk I would like to introduce myself and tell you a little bit about my background.
I have been interested in photography for some years now and always wanted to take close ups of birds although I am not a bird watcher. I have recently got into studying birds and bought myself a Sigma 150-500 lens. Having never used such a long lens before ,I find that my photos are not very sharp, is this because there is insufficient light at this time...

Hi,All,
Having just joined birding uk I would like to introduce myself and tell you a little bit about my background.
I have been interested in photography for some years now and always wanted to take close ups of birds although I am not a bird watcher. I have recently got into studying birds and bought myself a Sigma 150-500 lens. Having never used such a long lens before ,I find that my photos are not very sharp, is this because there is insufficient light at this time...