Notice : Following contents of installation instruction are written, drawn and shot by ,and it's copyrighted by Focusing House. Welcome to browse on line and you are "NOT" permitted to copy the pictures and contents for making other uses


CANON 10D/300D/350D/400D Focusing Screen Installation Instruction

~~Please prepare~~

1.Please prepare we send to your focusing screen and the accessories


3.The sweeps tool


~~Install procedure ~~

<P1>This is the Canon EOS 400D camera.


<P2>Please reverse and Standing this camera.


<P3>Angled the foam with the Tweezers can see an eyelet.


<P4>Make use of Tweezers point into the eyelet of switch and "press downward first " "push inside after" can open the spring lock .


<P5>The spring lock has already opened.


<P6>Take out and be careful, don't harm mirror


<P7>Please clip the focusing screen edge and take out of the camera.


<P8> This is the spare parts(1.Spring lock 2.focusing screen) for taking out.


<P9>This is Canon 400D Ec-L focusing screen (Grid)


<P10> Please clip the focusing screen edge and put the inside of the camera.(Split-image or Micro-prism facing to pentaprism is correct)~


<P11> Attach the spring slice.


<P12>Beautiful don't harm mirror


<P13> Put first to the fixed position.


<P14> You can use Clip to fix screens lock ,can also use thumb of left hand, Don't forget to want a thumb to put on "fingerstall".(There is fingerstall in the focusingscreen accessories box )


<P15>Operate carefully until it locks in place.


<P16>Focusing screen size is precise and centrally the position is easy.


<P17>This is the appearance which didn't focus.


<P18>This is the focus appearance.



1 . <p.17>&< p.18>On all sides darker is the relation that the dslr shooting viewfinder,Actually on all sides BE bright.

2 . Canon 10/300/350/400d camera change focusingscreen will not influence Auto Focus. ---> more focus point explain