I have just bought a Nokon/AFNikkor 50mm F1.4 lense from ebay and it does not have a serial number on it . it just says made in china and the number 10 .is it fake?

Your squier guitar is from 2001

Says the last link. For value, check eBay sold listings.

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Squier Serial Check http://guitarcheck.info Squier Guitar Check (1982 - 2011). Serial number. Serial Number should be 6-12 characters. Serial Number is required. Country of origin. Select Country, CHINA ...

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I'll take a guess with this number I believe it's around 11/2005 BUT your number may just be leading me up the wrong path,

no other number on this Canon?

Almost all early Quantaray lenses (and Sigma lenses, Sigma made Quantaray) in the Canon EOS mount will show error messages on Canon digital cameras (but still work fine on older EOS film cameras). usually err99 but err01 also. There is no DIY fix and Sigma ran out of update parts years ago. Current production lenses and Canon made lenses will not have this problem. This lens would only work for someone shooting EOS film cameras with no intention of "upgrading" their system to digital Canon cameras in the future.

There could be several reasons for this. It could have been dropped or damaged in some way, the lubricant may have dried, or something else might have happened. Take the lens to a good camera store and have them do a CLA (clean-lube-adjust) on it.

Without more information or photos it's pretty much impossible to even guess. But, it could be anything between a Leica and a Leica III, produced anywhere between 1925 and 1954. Only features and model-specific numbers engraved on the camera would tell the full story - serial numbers don't give much information to anybody but the factory.

That depends on the lens in question.

50mm f/1.8 AF-D:
http://www.nikonusa.com/pdf/manuals/lenses/AF/AF50mm.pdf

50mm f/1.4 AF-D:
http://www.nikonusa.com/pdf/manuals/lenses/AF/AF50f1.4D.pdf

50mm f/1.4 AF-G:
http://www.nikonusa.com/pdf/manuals/lenses/AF/AFS50G.pdf

My Tamron 18-270 has number at bottom side toward tripod hole(when lens is mounted on body)

Hello,
The Nikon D90 works well with the Nikon AF 50mm lenses and most other brand Nikon fit AF lenses. If they are not AF you will lose autofocus and metering.
Do you know that on the D90 the lens becomes a 75mm but the aperture stays the same, so for instance the 50mm f/1.8 is a 75mm f/1.8.

The FEE message indicates that the lens is not set to smallest aperture (highest number). The camera body expects this so it will have full control of the aperture. It sounds like you may be accidentally bumping or turning the aperture ring on the lens while using it or changing lenses. There is a little slide lock to lock it at f/22 to prevent this. Turn the aperture ring to 22 and move the slider so the white dot is next to the orange mark on the lens barrel.

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