Nikon 16mm f/3.5 AI Lens Cap

[Roland Vink]

Not so sure, Erik. The original cap for the f/3.5 should be labelled '64K', this distinctly reads '62K'. It might be for the oldest version(s) of the f/2.8 fisheye lens.

That's right, the box and cap are matching. This is the original metal push-on cap for the AI and AIS 16/2.8. I have one for my lens, it's beautifully made. Later it was changed to the current plastic cap which is still used for the AF 16mm fisheye (also DX 10.5mm fisheye?). If anyone wants a nice metal cap for their fisheye, it would be worth grabbing, although this one is rather pricey.

[Akira]

The one for 10.5mm fisheye is "61".  I use one with the internal ribs filed off as a cap for a 3rd party 52mm metal hood for a standard lens.

[jhinkey]

I can't remember where, but I stumbled upon a push-on cap for the 16/3.5 in the original box.  Don't remember how much I paid for it as I didn't care.

It's one of those things that I know I'll lose one day in the mountains, so having a spare gives a certain peace of mind.

- J

[Erik Lund]

It has now been documented three times that I was wrong - I didn't remember what I wrote on the previous page, it is of course a mistake, and the right one is still the 64K,,,

Thank you for pointing that out. If only the caps where mentioned on a certain page, I could in the future better remember what cap goes with what lens for these slip on ones,,, 

[Roland Vink]

The one for 10.5mm fisheye is "61".  I use one with the internal ribs filed off as a cap for a 3rd party 52mm metal hood for a standard lens.

Thanks, is the official code 61K?
I should add this data to my accessories page so Eric does not forget again

[Bjørn Rørslett]

That would be very helpful, Roland. Only the unusual types have to be mentioned I'd guess.

As of now, I'm always have to consult the little red Nikon handbook of Peter Braczko. I have a plastic crate filled with lens caps, another (bigger) with lens hoods, and matching the items to the correct lens is not always easy unless dictionary assistance is provided

[Akira]

Thanks, is the official code 61K?
I should add this data to my accessories page so Eric does not forget again

I'm not sure of the official code: there is an embossed number "61" inside the cap.

[Bjørn Rørslett]

The metal screw-in caps are denoted by an 'N' following the number, the figure itself just indicating the diameter in mm.

All the slip-on Nikkor metal caps I've seen are discerned by a capital 'K' at the end of the identification.

[Akira]

The metal screw-in caps are denoted by an 'N' following the number, the figure itself just indicating the diameter in mm.

All the slip-on Nikkor metal caps I've seen are discerned by a capital 'K' at the end of the identification.

Apparently the same system as that of the lens hoods, based on the Japanese words for screw-in (Nejiko-mu) and slip-on (Kabuse-ru).

[Bjørn Rørslett]

An interesting scrap of information there, thanks Akira.

[Akira]

You are welcome, Bjørn.

Interestingly, "S" as in HS-10 stands for the English "Snap-on".  I cannot come up with a suitable and simple Japanese word for that. 

[Erik Lund]

Thank you all! Very good 

[richardHaw]

i don't know if it has been mentioned but you can look for platics milk caps that would fit and put felt inside as lining.

[brent_e]

I had an hour to kill today (I didn't, really, but it's nice to check something off the to do list).

EDIT:  looks like the photos came in upside down.....?  same for everyone else???

[jhinkey]

Cool, but the same thing out of plastic might be a better choice for weight.  If you don't care about the weight, the hogging it out of a solid piece of Al is way more cool.

Plans to paint that cool slip on cap?

Should CNC a copy of the Nikon logo on it like the real deal has!

- J