Nikkor 105/2.5 hoods and caps question

kermaier

kermaier

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I recently bought a nice 105/2.5 in LTM mount. The front cap it came with is a Nikkor 52mm pinch cap with the protruding chrome studs on the sides. Since the lens does not have bayonet hood mounting studs on the outside of the front barrel, I bought a matching "correct" pinch-mount snap-in hood, which fits perfectly. The hood reverses nicely on the lens for storage, and snaps in reversed.

Now, the question: What should I use as a hood cap? I just bought a very nice looking black cap marked Nippon Kogaku Tokyo that was advertised as a hood cap for the 105/2.5 RF lens, but it doesn't fit. It's a push-on style cap, which I suspect is intended for either the bayonet-style hood reversed, or maybe for a different application (lens or hood) entirely. Any ideas?

Thanks,
Ari
 
Your 52mm snap-in cap (with chrome studs) should snap into the reversed snap-on hood.

By the way, the correct cap for the reversed bayonet hood is an ~54mm black push on cap. So, you are probably correct about the one you bought.

cheers,

David
 
"What dberger said"...

You have to pinch the cap pins, push into the retaining ring of the Hood, then let go of the pins. Report back if you have problems. I have the RF hood and RF cap that came with my S-Mount lens, also use the SLR hood and SLR cap with my LTM 10.5cm F2.5.
 
dberger said:
Your 52mm snap-in cap (with chrome studs) should snap into the reversed snap-on hood.

By the way, the correct cap for the reversed bayonet hood is an ~54mm black push on cap. So, you are probably correct about the one you bought.

cheers,

David
Click to expand...

Thanks, that's what I thought, but it wasn't quite working.
Hmm, I wonder if the push-on cap would fit as a lens cap? Probably not, if its intended to fit over the bayonet hood's rear end, which would be wider that the lens front rim.

Brian Sweeney said:
"What dberger said"...

You have to pinch the cap pins, push into the retaining ring of the Hood, then let go of the pins. Report back if you have problems. I have the RF hood and RF cap that came with my S-Mount lens, also use the SLR hood and SLR cap with my LTM 10.5cm F2.5.
Click to expand...

I tried that, but couldn't figure out how to orient the cap so it would snap into the hood's retaining ring. Now that I know it's actually supposed to work that way, maybe I'll be able to figure it out. :)
Or are there alternative versions of the snap-in cap that don't work with reversed hoods?

Landshark said:
Is that what you want?
Or would you like to put a cap on the hood when it's installed to use?
Click to expand...

It is nice to have a push-on cap for the front of a deployed hood (love the way the non-vented Cosina Voigtlander hood/cap combos work) but that's not what I was trying here.

Thanks everyone for the input! I'll update tonight when I get home and give it another try.

::Ari
 
On mine- both the hood and the cap have a split retaining ring. I orient the opening of the rings on opposite sides.
 
It fits when the hood is reversed.

3315159513_9f4320175b_o.jpg
 
OK, I got home and tried it -- and, of course you're all correct and I don't know why I couldn't do it before. :bang:

Thanks folks! Now I can put my lens in the gear bag without having the hood roll around and ding things up.

Anyone wanna buy a cap for the bayonet hood? :)

::Ari
 
Hacker, is that a Zeiss 85/2 lurking in the shadows behind your Nikkor?? <sigh> I can always dream, right? (Though even a black Nikkor 85/2 seems to be unobtainable at a reasonable price.)

::Ari
 
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