----- Original Message ----- > >How can ANY f5.6 lens be good for sports/action except > >under the most optimal sunlight conditions? reply: > With ISO 400 film? Did it all the time when I was shooting full-time.
While enough light can be obtained to shoot with 400 spd film during the day and get reasonable shutter speeds, I would think that the bigger issue would be the effect that a 5.6 aperture has on AF ability. More light reaching the AF sensor equates to better AF performance and the difference between 5.6 and even 4.0 is significant. This is the main reason I use 2.8 lenses for motorsports, I rarely actually shoot at maximum aperture with vehicles but do need maximum AF performance. Of course the "old hands" would get around this quite successfully using manual focussing techniques such as pre-focussing, and this is quite a valid option for part-time sports shooters. Regards, Tim www.timmunro.com.au * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
