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05-13-2012, 05:49 AM   #1
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Lens Hoods for 645 35mm and 120mm 'A' lenses

Hello all,

I have got these two lenses and am interested in buying lens hoods for them. These are the manual focus 'A' versions.

Can anyone advise what are the best hoods please? Ideally well-made Pentax ones, but of course generic alternatives would be ok if required.

I notice that the 120 FA version takes a hood called PH-RBD67. Is this compatible with the A version? I can't see what the 35mm hoods are called...

I only use these lenses on my 645D, which of course has a crop factor compared to 645 - so ideal hoods would be somewhat longer than the originals intended for 645 use - so would any Pentax hoods intended for slightly longer lenses fit them (and not vignette of course)?

I'd be most appreciative of any ideas.

Best wishes,

Ed

05-13-2012, 09:20 AM   #2
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The Pentax hood for the A 35mm is pretty much useless. Mine is broken now, but when I could replace it cheaply, I did not. It hardly shades and it is large to boot.
The 120mm A hood is very different from the FA one, screw-in, instead of bayonet; they are not exchangeable. The 120 A version is very good, and also does duty as the Pentax 35mm lens hood for the A 1.4/85mm. Usually, it comes at a price. I took a long period to resource one. But since it does not really screw on the 120mm in a reversed way for transportation, you might as well try to find a third party hood at 67mm.
Perhaps the JJC one would work (which can be reversely screwed on): JJC Professional Camera and Photo Accessories Manufacturer remote shutter release lens hood remote control flash diffuser Mind, the glass in the A 120mm is recessed quite a bit, you might not need a hood.

I myself am considering this JJC hood for the A 35mm, JJC Professional Camera and Photo Accessories Manufacturer remote shutter release lens hood remote control flash diffuser if only I knew whether it would vignet. I'm not sure. I don't think the tele-hood would be troubled by that. And for the 645D you might be in luck (I'm using the 645N, so full-frame).
05-13-2012, 10:05 PM   #3
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Original Poster
Thanks for the advice! I will certainly look at those options.

Do you happen to know the precise Pentax model number for the 120mm A hood please?
05-14-2012, 12:57 AM   #4
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Yes, for the A 120mm it's the MH-RA 67mm. It's metal, and comes with a pouch.
For the A 35mm, it's RH-RB77, which is rubber. Would not fit one of my bags screwed on.

05-14-2012, 04:34 AM   #5
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Thank you - I will keep an eye open for them
05-14-2012, 07:48 AM   #6
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I use a Lee 77mm wide angle adapter on my 35mm A, which is permanently attached to the lens. It works like a lens hood and you can also put the lens cap on it. No vignetting on a 645D and of course you benefit from the possibility to use the Lee filter holder.
05-15-2012, 02:19 AM   #7
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Interesting, does it work well as a sun shade because it does not seem to offer much protection?
BTW, would it vignette with the film cameras you think?
05-16-2012, 01:56 PM   #8
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I never had any problems with flare. So it seems to work, at least good enough for me. I never tried it on a 645 analog camera, but here is what Lee is saying about their filters:

"There is no hard and fast answer to this, lens specs and designs change all the time, as do the filter holder requirements. However, as a rough guide, using a simple holder setup with 2 filter slots, and no lens shade a DSLR (small chip) will go down to 10mm. A 35mm & Full chip DSLR will go down to 16mm. A medium format 645 & 66 will go down to 35mm. A medium format 67 will go down to 45mm. A larger format 54 camera will go down to 70 – 90mm."

And this already includes (!) the filter holder. So probably only the wide angle adapter will not vignette at all, even on a 6x6 film camera.


Last edited by derAngler; 05-16-2012 at 02:04 PM.
05-19-2012, 12:48 AM   #9
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I use one of these

I bought one of these about three weeks ago eBay - The UK's Online Marketplace and am so impressed with it that I have bought a 58mm vision for the 75mm lens.
I got the original Pentax rubber hood when I bought the 35mm lens but haven't used it, and will try and sell it I think.
I also have a Lee wide angle adapter and hadn't realised that the lens cap would fit on it. I'll try that instead of the white Lee cap.
05-29-2012, 07:56 AM   #10
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Fotodiox has hoods at reasonable prices. Their site shows a square hood for the 55mm lens. It is screwon 58mm and the hood itself has a set screw for proper orientation. I think this is the one I bought for my 75mm, although without looking at the kit downstairs I can't be absolutely sure.
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