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It depends what lens cap you have some lens caps you pinch off
Others you pull off some screw off its the easiest thing you can do on the camera you should have had a a1 filter screwed on before the lens cap then all you would have done is unscrew it all.
Then again you may have to take it to Nikon on Wilshire

place the lens cap back and then off the camera. after that turn onn agin and remove safely

You can try doing a Google search for your camera make model. I did and found this - below.
btw - Canon is spelled with one "n" which might help in your search results. I'd go to canon usa and click on their link or search their store for your replacement lens cap. Different lenses have different sized lens caps, so be sure you have the right one.
Lens Caps ' Canon Online Store shop.usa.canon.com/shop/en/catalog/.../ef-lens-accessories/lens-caps
Canon Tips & Tricks When using a lens with IS while on a tripod, ... Canon Tips & Tricks That hole in your battery cover has a purpose! ... Lens Cap 14mm f/2.8L II.

It may be your lens cap. If the lens cap is on, the lens cannot extend, so the camera will give you notice to turn the camera on and then off again (assuming you know that you must remove the lens cap before turning on again. If your lens cap is off, check to see if there is anything else blocking the lens or impeding it from extending.

Check to see if your lens cap is on. If the cap is on, the lens cannot extend and you will get that message. If your lens cap is off, check to see if there is something impeding the lens and keeping it from extending. Your camera may "think" the lens cap needs to be removed.

hi dear alexanderesma, your lens have the pin roller's out of cylinder helicoid,some case maybe repaired, otherwise change of lens unit become necessary.
Please send to Nikon service.
Regards

Hi,

The Lens cap model of the Camera depends on the model of Lens which you're using with the Camera. The model # of the Lens Cap for the Camera body and the lens differs. Few models and the details are given below:

55mm Front Lens Cap - G Series logo
Model Number: ALC-F55G

72mm Front Lens Cap - Carl Zeiss logo
Model Number: ALC-F72Z

77mm Front Lens Cap - Carl Zeiss logo
Model Number: ALC-F77Z

77mm Front Lens Cap - G Series logo
Model Number: ALC-F77G

α Rear Lens Cap
Model Number: ALC-R55

62mm Front Lens Cap - Carl Zeiss logo
Model Number: ALC-F62Z

49mm Front Lens Cap - Sony α logo
Model Number: ALC-F49A

62mm Front Lens Cap - Sony α logo
Model Number: ALC-F62A

62mm Front Lens Cap - G Series logo
Model Number: ALC-F62G

67mm Front Lens Cap - Sony α logo
Model Number: ALC-F67A

55mm Front Lens Cap - Sony α logo
Model Number: ALC-F55A

72mm Front Lens Cap - Sony α logo
Model Number: ALC-F72A

77mm Front Lens Cap - Sony α logo
Model Number: ALC-F77A


Please enter the SonyStyle webpage and check for the compatible ones for the Lens which you're using.


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The cap is a plastic disk, usually black or silver, that snaps on at the end of the lens to keep the lens clean. Some lenses have two caps, one for each end when not attached to the camera.
Some cameras don't use a "loose" cap; those cameras generally retract the lens into the camera body and "close" a door in front of the lens.
Many, if not most, camera users do not use a cap (my guess).

The wide angle lens is generally an "optional" lens that can be used for group or scenery pictures when you want to shoot a "wide" picture. A "normal" lens is generally around 50mm (plus / minus 5mm). A wide lens is anywhere from 17mm to 24mm (or so).

I recommend obtaining a wide lens... with a cap.

Hope this helps!

wrong !!!!!! the lens cap is proprietary to the camera I think I might have one if your interested?

I would sugest using an adaptor ring. You can reduce the size of your lens opening down a common size lens cap that will fit your camera. If you can't go this route then give me the make and model number and I will see what I can do for you. LJ