I had a Canon 450D and it was the biggest pile of crap ever

-my Canon 350D was a great camera and when it was stolen my insurance company paid for it`s nearest current equivalent the 450D.
No matter what I did with it I couldn't`t get sharp images,unless I was photographing still subjects-I took it back to Jessops who supplied it and the sent it off to get checked over,and it came back after 10days saying everything was fine with it.
IT WASN`T,so I decided to sell it on Ebay and put some money towards getting a 40D which is fantastic.
Maybe I got a duff example,but it was useless for aircraft pics-I think the problem was the slow burst rate,or a focusing problem,but my 350D had no problems and is a lower spec camera,so I don`t understand why the 450D performed so badly.
Images where very very soft no matter what I did with it,fast or slow shutter speeds and I spent ages trying to get a decent image using differnet settings.
I have included 2 panning shots to show you the difference.Both at 1/100th Sec at ISO200.
1st is a Tucano with the 350D. 50% sharpening
2nd is a Team Guinot Stearman with the 450D 95% sharpening STILL VERY SOFT!
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