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09-23-2013, 12:01 PM   #1
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DA 35 2.4 - what's this?

II have just bought a second-hand DA 35mm 2.4. When I checked it out with the seller, I noticed that the front seemed different than what I remembered from the internet, but thought nothing of it, since the lens was in perfect condition in every other way.
Coming home, the difference kept popping up in my mind, and, sure enough, the front didn't look at all like in the review images. So I tried to unscrew it.

(Sorry for crappy phone pic)


Does this have anything to do with a hood (there are lugs on the adapter)? There is a 49mm filter thread on the front as well.

09-23-2013, 12:15 PM   #2
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It's probably for a third party lens hood.
09-23-2013, 12:28 PM   #3
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Yep, I used to have one for my 50mm macro. The adapter ring is threaded one end and has a bayonet on the other. Several brands available on fleebay, mostly Chinese. Nothing to worry about for your lens.
09-23-2013, 01:18 PM   #4
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Thanks guys. I was sure this wasn't originally with the lens and the guy just forgot about it. The question now is, where's the redt of the hood?

09-23-2013, 02:24 PM   #5
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Hm what is this type of filter with bayonet called? Seems like a good solution for some lenses
09-23-2013, 02:32 PM   #6
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I bought one of those hoods with a screw-in adapter like this, and it was quite useless. The idea was that the bayonet hood could be reversed when not in use. Unfortunately, the force needed to overcome the bayonet lugs is greater than the force to unscrew the adapter, so the whole thing would just unscrew. I tried to screw the adapter in tighter -- and that's how I broke my F 35-70.

In fairness the hood maybe would have loosened up over time. From the factory, it was so tight (plastic hood on aluminum adapter) that I really had to hack them apart using a screwdriver. The mangled plastic probably didn't help.

I would probably just use a collapsible rubber hood
09-23-2013, 05:11 PM - 1 Like   #7
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QuoteOriginally posted by Na Horuk Quote
Hm what is this type of filter with bayonet called? Seems like a good solution for some lenses
They seem to be referred to as 'reversible hoods'. I've got a couple made by Matin (Korean brand). They did require a little break-in before the bayonet was looser than the threads, but I've used one on my F 35-70 with no problems.
09-23-2013, 10:37 PM   #8
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I had the Matin one as well, found it on fleebay. Worked quite well though had some of the problems described above - it loosened up over time.

09-24-2013, 09:31 AM   #9
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I also have the Matin hood on my F35-70 (mine works quite well - but you do have to pay attention as to the amount of force you are using). Based on what little I can see from the photo and OP's question, I'd give the ring a high priority of being a Matin hood mount.

That said, OP can safely toss it in the trash. I have never seen the hood or ring sold separately. And at the cost of a Matin hood, it probably isn't worthwhile to do anything other than replace the whole thing.
09-24-2013, 01:00 PM   #10
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QuoteOriginally posted by JimJohnson Quote
That said, OP can safely toss it in the trash. I have never seen the hood or ring sold separately. And at the cost of a Matin hood, it probably isn't worthwhile to do anything other than replace the whole thing.
Was just about to ask what to do with it I think I'll hang on to it, in the improbable case the lens is actually third-hand and the original owner comes knocking.
09-24-2013, 01:36 PM   #11
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Is the bayonet limited for its hood, or can you mount other hoods as well, like the PH-RBA?
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