<P1>Tow kinds design differently......
CANON 10D/300D/350D/400D/450D/500D/550D/600D/650D/1000D/1100D Focusing Screen----Focusing points Explain
Canon 10/300/350/400/450/500/550/600D/650D/1000D/1100D camera change split-image or micro-prism focusing screen the focus point will disappear,can only use center focus point, can't use to change focus point function. For resolving this problem...... We will mark focus point in the focusing screen Comparison BE 1:1,The focusingscreen will be able to use and change focus point.Focus point will show but can not bright.
But had point mark,You can select any of the AF points manually.You can from viewfinder information see the focus confirmation light or basis focus voice to confirmation in focus ^ ^
<P1>Tow kinds design differently......
<P2>This is include focus point screen,To not influence manual focusing, it didn't marking focus in center (350D X700 GRID)
<P3>This is from viewfinder window see the 350D K3 GRID screen
<P4>The focus point,Comparison BE 1:1 (450D F6A GRID)
<P5>This is 450d F6A (Grid) focus point screen in the viewfinder appearance.
<P6>This is in focus in the viewfinder appearance