Hi, My Nikon D90 with Nikkor 18-200mm lens is giving me the following error message: Memory card is locked. Slide to "write" position. Any ideas how to correct this? Thanks! Jennifer

SD and SDHC cards have a slide switch along one edge. The position farthest from the metal contacts locks the card, protecting it from writes. The position nearest the contacts unlocks the card.

The CRH error message means that the lock tab on your memory card is in the locked position. The purpose for the lock switch is to allow you to set your SD card so that you cannot accidently erase your valuable pictures. Remove your SD flash memory card from the camera and hold it in your hand with the label toward you and the angled corner to the upper right. Look on the left edge of the card and you will see a very small slider switch. Make sure the switch is in the fully up position then reinsert it in the D90. If the camera is not generating a false error, your camera should work correctly.

Hi there fellow Nikon user, I understand that you're having issues with your memory card. You mentioned that you already put on the unlock/write position but you;re getting the same error message. There's a big possibility that the card's locking mechanism is damaged. I suggest that you try a different memory card to isolate the problem. If inserting the other card doesn't fix the problem, Then most likely it's the card slot itself that is already busted. Have it checked right away by an authorized Nikon technician.
However if the other card was accepted and you're able to write info with it, then we can conclude that the memory that you're having problems with should be replaced.

Hope this help. Cheers!

Hi,.your camera may have a defective weld on memory card connector.
Contact Nikon sevice.
Best reggards

That's the Nikon error message for a lens with aperture ring set to something other than the minimum (i.e. highest number).
The camera insists on controlling the aperture ring, and to do so, the ring must be set to the minimum setting.
Unless it is a "G" lens, which has no aperture ring whatsoever.
The camera body sets the aperture of the lens wide open while auto-focusing, and displaying through the viewfinder. When it comes time to flip the mirror up and take a picture, the camera dials the aperture to the setting you (or the camera) have selected.

You need to turn the aperture ring to its smallest aperture (f/22) and lock it using the little orange slide. Control the aperture from the camera, just as you do with the kit lens.

Yes. The lens will autofocus and meter properly on the D90. Be aware that the D90's DX sensor will give you the same field of view that a 105-315mm lens would give you on a 35mm film camera.

Make sure you set the aperture ring on the lens to its smallest setting (largest f/number) and lock it. Without doing so, the lens will not communicate properly with the camera and thus you will not get the autofocusing.

Hello,
The 50mm lens is fairly old and uses a different system to the later lenses. On the D90 and other later cameras you should rotate the ring to 22 and lock it there using the lock just above the aperture ring.
To adjust the aperture you use the front dial by the on/of switch.

Try it out in A mode. Rotate the mode dial on the top left of the camera to A (Aperture Priority mode) then lightly press the shutter button to turn the meter on. Then rotate the front dial and you will see the aperture reading changing.

The older Nikons changed their apertures using the ring but the later Nikons use the camera controls.

I don't own this camera but My guess is your memory card is in a LOCK SETTING you need to move the memory card to unlocked " wrirte " so you memory card isn't locked.....
Step 1 remove the card from you're camera
Step 2 there is a small little side on the side of the memory chip move that to the unlock position.
step 3 insert the card and start shooting!