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Canon 300D Focusing Screen Katz Eye™ Focusing Screen for the
Canon 300D (DRebel, Kiss Dig.)

General Information

There are three different Katz Eye™ focusing screens available for the Canon 300D - microprism, split prism, or the “Plus” combination prism. All three are excellent for manual focusing. The split prism gives the most precise indication of focus. It is great for macro photography, still life, portraiture, etc. The microprism is nice because it doesn’t require you to find a vertical line to do your focusing. The microprisms just distort the image and make it very obvious when focus is achieved. While not quite as precise as the split prism, it is great for action or all-around use. Neither screen has any effect on the autofocus functions of the camera.

Viewfinder Markings

While the Katz Eye screen has no effect on the autofocus functions of the camera, when using any aftermarket focusing screen in the 300D, the AF indicator points will no longer light up in the viewfinder and the AF rectangles will not show. The lack of the indicator dots has no effect on the camera’s ability to autofocus and fortunately, all the functions of the AF dots are duplicated elsewhere on the camera - the LCD on the top will allow you to select your focusing point and the green light in the viewfinder will blink for focus confirmation. The Katz Eye screen has only the prism circle and a hairline composition circle around the prism - many people actually find the cleaner viewfinder to be an advantage. But if you must have the AF indicators, your only option is to stick with the original screen.

Metering Information

The split prism version of the Katz Eye™ focusing screen for the Canon 300D does affect the light metering of the camera and will require you to use the exposure compensation adjustment of the camera (or manual settings) to get proper exposure. The amount of exposure compensation will vary between 0 f-stops with wide aperture lenses and 1½ f-stops with slower lenses. The expsure shift can be mitigated by using the Manual (M) shooting mode, which will force the camera to use centerweighted average (CWA) metering. CWA metering yields the most accurate results when using a split prism focusing screen. If you are not comfortable with using exposure compensation, either use the Katz Eye™ microprism focusing screen or keep the original Canon 300D focusing screen.

The microprism version of the Katz Eye™ focusing screen for the Canon 300D has the advantage of having no significant effect on metering, so exposure compensation will generally not be required.

The “Plus” Prism

The Katz Eye™ focusing screen for the Canon 300D is now available in the “Plus” version! The Katz Eye™ “Plus” focusing screen for the Canon 300D is a laser matte with a split prism circle and a microprism collar. Due to the age of this model, no additional exposure testing has been done with the “Plus” version. It is expected that exposure results will probably be similar to the split prism version described above, but no guarantee is offered to that effect. Users are strongly encouraged to take test shots, check their histograms, and adjust the exposure compensation accordingly.

Like the other two Katz Eye™ screens, the “Plus” version will have no effect on the autofocus functions of the camera, other than that the AF indicator points will not light up in the viewfinder - please see the Viewfinder Markings section for complete details.

Installation

Installation is not terribly difficult, but it does require care. Official instructions for the 300D are not available, as Canon never released a replacement screen. But, Michael Tan wrote instructions for the 300D which are available at 300D Focus Screen Removal Instructions.PDF. If you don’t feel confident installing it, your local camera shop should be able do it for around $65. Since the Katz Eye screen is a direct replacement for the original, any competent shop 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 Katz Eye™ Optics, we can, though it’s not the normal procedure. Please see the Installation Service page to order installation with your focusing screen. Installation service at Katz Eye™ Optics costs $65, plus the cost of return shipping of your camera.

Brightness Enhancement

Like all screens made by Katz Eye Optics, the 300D screen can be OptiBrite brightness enhanced for the ultimate appearance. Click here for more information about the OptiBrite treatment.

Grid/Crop Lines

All Katz Eye™ focusing screens are available with grid patterns or crop lines. We have a variety of standard patterns available or we can provide a custom pattern to your design. Click here for more information about our grid/crop line patterns.


Prism Type

Katz Eye “Plus” Split Prism w/Microprism Collar
OptiBrite Treatment

OptiBrite Brightness Enhancement Treatment

No
Yes - Add $55.00
Grid/Crop Lines

Click here to read more about our various composition aid patterns.

Quantity *

  Price: $105.00 /ea.

Manufacturing Time

All Katz Eye™ focusing screens are custom made to order and are usually not available to ship the day the order is placed. As of 07/09/2008 production is backlogged due to very heavy order volume and most orders are being completed in approximately 2 weeks from the date the order is placed.



Supported Models
Canon DSLRs

Fuji DSLRs

Kodak DSLRs

Leica DSLRs

Nikon DSLRs

Olympus DSLRs

Panasonic DSLRs

Pentax DSLRs

Sigma DSLRs

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The Katz Eye™ “Plus”

Grid/Crop Lines

OptiBrite - Brightness Enhancement

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