I agree, Cotty. He probably had the camera choose the wrong focus points most of the time. Furthermore 1/250 sec. is perhaps a bit on the slow side.
Jens Bladt mailto:[EMAIL PROTECTED] http://hjem.get2net.dk/bladt -----Oprindelig meddelelse----- Fra: Cotty [mailto:[EMAIL PROTECTED] Sendt: 17. januar 2005 10:24 Til: pentax list Emne: Re: *istD AF performance (was Re: Sigma 2.8 Zoom lens comments) On 17/1/05, Jens Bladt, discombobulated, unleashed: >Well... >Canons don't always get what you ex�ect. I danish guy wrote this at >Photo.net: > >Can anybody help. I have just been to Miami to shoot for a danish magazine >and around all my photos (90%) is out of focus ? i use a EOS 1Ds camara and >with EF 24-70 L USM - EF 100 USM macro and a 70-200 L USM IS lenses. I never >used a tripod and around 250 shutter speed all time and also from bl. 4 to >5.6 mostly because i shoot fashion. I dont understand why most of all my >photos is blurered i tough Canon lenses was the best and fastest auto focus >on the market. I even tryed single AF point in the middle and also the auto >AF point 45 both ways i never got some really sharp pictures. I remember in >the old days with film a Canon EOS 5 or Nikon 5 all pictures was focused is >there any special rules for Digital i mean, shutter speed and Bl. is same >thing right Shutter speed 250 must be shutter speed 250 on both camaras or >do you always need a faster shutter speed with digital ? please i need help >fast ! kind regard Mugge > >T answer his question: Yes, there's is a difference. Due to the grater >enlargement (crop factor) the shutter speed necessary to "freeze" movent >must be divided by the crop factor: If i.e. a 250mm is used: 1/250 divided >by i.e. 1.5 = 1/375 sec. > >90% out of focus! That bad! Sorry Jens, the only thing this proves to me is that the operator didn't put enough time/resources into understanding how to operate the gear properly. The fact he's posting to Photo.net illustrates lack of resourcefulness to me. It's a bit like me writing to Cow.net and saying that I bought a cow, put a bucket under the cow and squeezed the teats, but nothing happened. What am I doing wrong? (Answer, of course, is get the cow pregnant first ;-) The point I am making is that just because someone says something doesn't work properly, does not mean that it is not working properly. Ever heard the expression 'a poor workman always blames his tools' ? Cheers, Cotty ___/\__ || (O) | People, Places, Pastiche ||=====| http://www.cottysnaps.com _____________________________
