I can use English only a little.

I'm sorry, grammatical mistakes please forgive me.

*my camera:

-CANON EOS 40D

-CANON EOS 5D MarkII

-Olympus PEN E-P1

*my lens:

-CANON EF-S17-85mm F4-5.6 IS USM

-CANON EF24-105mm F4L IS USM

-CANON EF28mm F1.8 USM

-CANON EF50mm F1.4 USM

-CANON EF50mm F1.8 II

-CANON EF100mm F2.8L macro IS USM

-CANON EF100mm F2.8 macro USM

-SIGMA 17-70mm F2.8-4.5 DC macro

-SIGMA APO 70-300mm F4-5.6 DG macro

-Tokina AT-X 107 DX Fisheye 10-17mm F3.5-4.5

-Olympus M.ZUIKO DIGITAL 17mm F2.8

-Olympus OM Zuiko 35-105mm f3.5-4.5