HOW TO SET UP CAMERA WITH 500MM LENS

Turn the aperture ring on the lens to its smallest setting (largest f/number). You can control the aperture from the camera body, the same was as with a lens without an aperture ring.

A 500 mm mirror lens is a fully manual lens (manual focus no aperture change) using a T mount adapter to your specific camera. The T mount costs some $15. It depends on your camera how to turn off the auto focus and go to aperture priority mode. The aperture on a mirror lens is set, usually at F8, so the shutter is the only item that can be adjusted to get a correct exposure. A digital camera (set in adjustable ASA setting) can change it's ASA to help with getting a correct exposure. Manual for digital camera are usually on the companies' web site.

There is no problem. The lens simply does not have the electronics for the camera to detect. You need to use the lens in Manual mode (turn the mode dial to M). You'll have to set both the shutter speed and aperture yourself, without any help from the camera's exposure meter.

You can take a picture, look at it on the back of the camera (preferably with the histogram) and adjust the exposure accordingly. Repeat until you get a good exposure.

Turn the aperture ring on the lens to its smallest setting (largest f/number). You can control the aperture from the camera body, the same way as on a lens without an aperture ring.

For Nikon AF and manual focus SLRs. The compatible T Mount System makes it possible to use most any single lens reflex camera in combination with various front camera attachments such as telescopes, mirror lenses and slide duplicators. The T Mount is a metal connector that screws onto the compatible front attachment and allows this combination to be coupled to the SLR camera lens mount.

Use "exposure compensation" (the button with a plus/minus symbol). It allows you to lighten (toward the + side) or darken (toward the - side).

You'll need to switch to M (Manual) mode. You won't get any metering through the lens, nor will you get any autofocus.

Pre-set depending on the model, can be fixed aperture, and or fixed focal length. You have to read the spec sheet to know, or call the dealer.

I have a fixed 500 mm / F8 mirror lens. It is refered to as a fixed lens, because nothing is adjustable. I have aperture and filter drop-ins to do the equivalent of some adjustments.

Jerry G.

There is a website devoted to Err99: http://www.richardsnotes.org/archives/2005/04/29/50mm-lens-contact-points/

I have a Quantaray 100-300 which also displays an Err99 when used in automatic mode. The only way I can use this lens is in AV mode and select the widest aperture.

Lock the aperture in F 22. This will get rid of FEE. Now control the aperture settings from the body ( control infront of shutter release )