From the man
Chuck Westafall wrote:
Canon will soon offer several sets of modified focusing screens for various EOS DSLRs as follows:
Item Code Description
005T165 Focusing Screen Set Ec-1Ds Black Mask
005T166 Focusing Screen Set Ec-1Ds Crop Lines
005T167 Focusing Screen Set Ec-1D Black Mask
005T168 Focusing Screen Set Ec-1D Crop Lines
0056T095 Focusing Screen Set Ee Black Mask
0056T098 Focusing Screen Set Ee Crop Lines
Each set consists of two focusing screens: One with 4x5/8x10 aspect ratio marks and another with square aspect ratio marks. The Black Mask Sets black out the area outside the crop lines, whereas the Crop Line Sets display both the crop lines and the area beyond them.
USA list price for each set is $170.00. In all cases, actual selling prices will be set by dealers. The 1D and 1Ds sets are available now, and the 5D sets (Ee type) will be available by March. Authorized Canon dealers should contact their Canon sales representatives to place orders. These items are not listed in our current dealer catalog, but will be included in the next edition, which is scheduled to be released at the PMA show in late February.
Other details: The screens can only be purchased in the sets listed above. Individual screens will not be available "a la carte." The screens are based on the standard focusing screens for each camera, i.e., Ec-CIII for the 1Ds and 1D screens and Ee-A for the 5D screens. Canon has no plan to offer other screen types (e.g., Ec-S or Ee-S, etc.) with crop lines or masks. Additionally, when using the Black Mask screens, automatic exposure is only usable in partial, spot, or multi-spot metering patterns. For E-TTL or E-TTL II autoflash with Canon EX Speedlites, only FEL (Flash Exposure Lock) together with partial or spot metering is recommended
