The KatzEye™ focusing screen does not have the focus points marked. The center point is quite obvious because of the split prism and the outer two points are approximately at the edge of the microprism ring. The red dots indicating activation of the AF point will continue to light when active. All other viewfinder information functions as normal. Live View Mode
Live View mode continues to function normally with the installation of the KatzEye screen. Live View Mode A is enhanced by the addition of the split prism to the LCD display and the prisms may be used on the Live View for critical focusing. In Live View Mode B, the prism will not show and the Live View functions as before. Frame assist patterns function normally in both modes. Metering Information
In our testing, the KatzEye™ focusing screen has only a very slight effect on light metering with the E-330. In ESP or centerweighted modes, metering tested within factory tolerances. Spot metering mode showed a very slight tendency to underexpose - an exposure compensation of +1/2EV is recommended in spot metering mode. Results appeared similar with ZD and non-ZD lenses. In all critical shooting situations, it is recommended to confirm correct exposures by taking a test shot and reading the histogram. The “Plus” Prism
The KatzEye™ focusing screen for the Olympus E-330 is available exclusively in the KatzEye™ “Plus” version. The “Plus” version has a unique prism design which delays the prism ‘blackout’ phenomenon until well after f11. Ordinary split prisms will black out by about f5.6, rendering them difficult to use with slower zoom lenses, teleconverters, or in extreme macro photography... but not the KatzEye™ “Plus”. More information about the KatzEye™ “Plus” can be found here.
The focusing screen in the Olympus E-330 can NOT be changed by the user. Although the KatzEye™ screen is a direct replacement for the original and no modifications or calibration are required, the actual procedure to change the screen is very difficult and should not be attempted by the average user. Because of this, installation instructions will NOT be provided.
Since the KatzEye™ screen is a direct replacement for the original, any camera repair shop that works on Olympus cameras should be able to handle the installation and the original screen can be reinstalled at any time, should you so desire. If you want us to install it at KatzEye™ Optics, we would be happy to. Please see the Installation Service page to order installation with your focusing screen. Installation service at KatzEye™ Optics costs $65, plus the cost of return shipping of your camera.
Like all screens made by KatzEye™ Optics, the E-330 screen can be OptiBrite brightness enhanced for the ultimate appearance. Click here for more information about the OptiBrite treatment. The OptiBrite treatment has no significant affect on light metering in the E-330.