on 2/14/02 6:01 AM, Dave Knott ([EMAIL PROTECTED]) wrote: > Why is the EOS-1V supplied as standard with the Ec-CIII focusing screen > rather than the 'top-of-the-range' Ec-N, as supplied in the EOS-3?
The Ec-CIII is easier to use while manual focusing. The images snap in and out of focus more apparently than the laser-matte screen used in the 3 and consumer EOS bodies. The Ec-N is brighter, but the extra brightness makes it harder to manually focus. With the Ec-N screen, it's rather difficult to accurately focus a wide-angle lens. The Ec-N screen (and the screens used in consumer bodies) are made brighter since Canon is assuming that the user is likely to put a slower zoom lens (e.g. 28-135/3.5-5.6) on the body. The slower lenses provide less light for the viewfinder, and the screen attempts to compensate. IIRC, the Ec-N has more of a fresnel pattern. > The instructions for the EOS-1V state that 'Custom Function 0' needs to be > set to '0' or '1' according to the type of focusing screen. This function > needs to be set to '0' for the Ec-N & '1' for the Ec-CIII. There are a > further 19 'Custom Functions' that can be set to enable all sorts of > different features & customisations, the default setting being '0' for all > these functions (as the camera is supplied), apart from 'Custom Function 0' > which is set to '1' as standard, to accommodate the Ec-CIII focusing screen. > Surely this discrepancy suggests that when the 1V firmware was written, the > designers were expecting the Ec-N screen to be supplied as standard? No, Canon intended to have the interface and custom functions of the 3 and 1v match as closely as possible, since they figured that the pros who have bought the 3 while waiting for the replacement for the 1n will most likely end up purchasing the 1v. When the new image-stablized super-telephotos became available, Canon also made available an upgrade to the firmware on the 3 to add a custom function for the settings of the AF stop buttons. This custom function number is CF19 on both cameras. Note that there is no CF18 on the EOS 3. > I can't believe it is really just to get an extra �25 off new EOS-1V buyers > for the better focusing screen: What is Canon's problem with using the Ec-N > focusing screen in the EOS-1V? You can look at this the other way, and say it's a way for Canon to get extra money off the EOS 3 buyers who want a different screen for easier manual focus. After I installed the Ec-CIII in the EOS 3, I found that I don't need the 1v after all. -- John Chennavasin | This article contains material which may inform and [EMAIL PROTECTED] | may be quoted, printed, forwarded, or redistributed www.fobpro.com | as long as the original attribution remains intact. * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
