Have been looking at this forum for a while but have now signed up as a newbie and a loyal Pentax user!
Are there any other aviation photographers on this forum? The reason I ask is that I will shortly be in a position to purchase either the DA* 300mm or the Sigma 100-300 EX, I know that there are threads on both lenses which I have read but still can't make my mind up. I have just got rid of my Sigma 135-400, I was not very happy with it at all.
I realise that with a prime lens photos of aerobatic teams and take off/landing shots will be limited compared with a zoom but the quality of images looks far superior.
Any suggestions/comments welcome.