Canon EOS-1D X EOS-1D Instructions - Page 165

Changing the Focusing Screen Ec-series Interchangeable Focusing Screens Ec-A: Standard microprism Lenses with a maximum aperture smaller (higher f/number) than f/5.6 will cause the focusing screen's microprism to darken. Ec-H: Laser-matte with scale The scales at the center and periphery help you compose shots for close-ups and photomicrography. Ec-B: New split screen Lenses with a maximum aperture smaller (higher f/number) than f/5.6 will not cause the focusing screen's microprism to darken. Ec-I: Laser-matte with cross hair Use the cross hair at the center to focus. Suited for photomicrography and astrophotography. Ec-CII: All Laser-matte EOS-1N's standard focusing screen. Ec-L: Cross split screen Focus with the vertical and horizontal splits. Lenses with a maximum aperture smaller (higher f/number) than f/5.6 will cause the focusing screen's split portion to darken. Ec-CIII: Laser-matte EOS-1D and EOS-1V's standard focusing screen. The CIII logo is imprinted on the lug to distinguish it from the Ec-N. Ec-N: New Laser-matte EOS-3's standard focusing screen. Ec-D: Laser-matte with grid Ideal for architectural photography and photo duplication work. Ec-R: New Laser-matte EOS-1N RS's standard focusing screen. Although the EOS-1D and EOS-1V use the same focusing screen, the picture coverage is smaller with the EOS-1D. The illustration compares the picture coverage of both cameras. EOS-1D 10 EOS-1V 165 Reference