Originally posted by pixelpruner Thanks for the responses. A teleconverter was something I hadn't really considered because I have a 2x vivitar teleconverter and it quite noticably degrades IQ using my 50mm f1.7. Can someone give me teleconverter/lens combination examples as I'm a little sceptical?maybe you could help out here Lowell?
like volosong, I use sigma APO EX teleconvertters with my Sigma APO 70-200 F2.8 EX. While not sports, I have attached an image I took this year with the 70-200 and 2x TC
https://www.pentaxforums.com/forums/187646-post19.html This is right out of the camera, shot on K10D with no PP or crop, and stored only as JPEG.
Quote: @volosong: could you explain what problems you had with the 170-500?
A powerful flash is also a very valid suggestion I hadn't considered - mainly because I avoid flash use in general for what I normally photograph.perhaps someone could suggest the cheapest feasible options for this application as this would be an additional cost i hadn't considered?
thanks
I would never take a flash to a sporting event.,
first of all, and I do use flashes with my sigma and also my 300F4 plus 1.7x AF TC, I use them for wildlife. Birds don't seem to mind. Athletes might
Second, using a 400+mm lens on a bird means it still might be within flash range, Birds are only a foot or so high, an athlete is 6 times larger (as a minimum) and usually 6 times further away. Unless you have a flash that is as bright as the sun, you won't get proper exposure, and if you do have one powerful enough, it will probably take the paint off the opposite side of the gym or arena.
When I do indoor sports, I push the ISO up, It is unusual not to shoot at 1600 ISO.