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10-10-2009, 09:31 PM   #1
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Pentax-M 28mm F2.8 Lens Hood ?

Hello,

With my Pentax-M 28mm F2.8 I get a lot of pale lighting in the suns corner of my shots, I guess this is called flaring, see below. I also guess a hood will fix my problem.
My question is what size/type should I get and will I still be able to use screw-on filters with a hood ?

Thanks,
Rodney.

PS: I should ask while I am here the same question for my
Pentax-M 50mm f/1.7
Pentax-M Macro 100mm f/4

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Last edited by Rodney9; 10-10-2009 at 10:36 PM.
10-10-2009, 11:31 PM   #2
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For your M-28mm and M-50mm, a 49-37mm and a 37-30.5mm step-down adapter ring will do nicely. I don't have the M-100mm macro but I have a feeling you can do the same. Here are my F-50mm and my Tamron 90mm macro. My M-28mm has the same "lens hood" but I don't have its photo here.



10-11-2009, 09:00 AM   #3
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I tried several different generic rubber collapsible hoods in 49mm filter size for the M28/2.8, and found none of them were very effective. I tried a metal hood that was quite effective but vignetted a bit (I tried it in the store, so I didn't have to buy it to find this out). Perhaps a slightly larger metal hood (55mm, say) with a stepping ring would do the trick; I don't know. There was a square hood designed for the lens that you might be able to find on Ebay.

Purely by accident, I discovered the screw on hood for the DA70 works beautifully with the M28/2.8. If you fully the extend the hood like you would with the DA70, it vignettes, but if you don't, it doesn't, and it's actually very effective - perhaps more so than it is extended with the DA70 it was designed for. Probably not useful info if you don't have a DA70, but it does suggest a small hood like that could work, if you happened upon the right size - and the idea of using a series of stepping rings as SOldBear suggests seems promising.
10-11-2009, 09:10 AM   #4
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QuoteOriginally posted by Rodney9 Quote
Hello,

With my Pentax-M 28mm F2.8 I get a lot of pale lighting in the suns corner of my shots, I guess this is called flaring, see below. I also guess a hood will fix my problem.
My question is what size/type should I get and will I still be able to use screw-on filters with a hood ?

Thanks,
Rodney.

PS: I should ask while I am here the same question for my
Pentax-M 50mm f/1.7
Pentax-M Macro 100mm f/4
I was able to find some original Pentax hoods for my M 28/2.8 and M 50/1.4 on EBAY. You will probably pay more than you should for them but they are designed for the lenses in question. The hood below, pictured on my M 35/2, fits the M 28/2.8 as well.





This is the PH-S49 hood which fits both the M28 and 35mm lenses.

SMC Pentax M 50/1.4 with hood. Same hood fits M 50/1.7





According to Boz Dimitrov's Pentax page there are three hoods for the M 50mm. The PH-R49 screw-in hood, the PHS49 clip-on hood, and the PHP49 screw-in hood.

Yes, you will be able to use your screw-on filters with these clip-on hoods. There are filters on both the 35mm and the 50mm in the images above. The hoods help with flare and provide some protection for the front element as well. The M 100/4 marcro shares the same clip-on hood as the M 85/2 and 100/2.8 lens.

Tom G


Last edited by 8540tomg; 10-11-2009 at 12:34 PM. Reason: typo
10-11-2009, 03:24 PM   #5
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BTW, it seems to me a hood designed to work with a lens on film probably has to be more conservative in its coverage to avoid vignetting, and thus might not be as effective as a hood designed to work with the lens on APS-C. I'm sure my DA70 would be vignetting with the 28 on FF, and that fact might be what allows it to be as effective as it is on APS-C.
10-11-2009, 03:38 PM   #6
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QuoteOriginally posted by Marc Sabatella Quote
BTW, it seems to me a hood designed to work with a lens on film probably has to be more conservative in its coverage to avoid vignetting, and thus might not be as effective as a hood designed to work with the lens on APS-C. I'm sure my DA70 would be vignetting with the 28 on FF, and that fact might be what allows it to be as effective as it is on APS-C.

Good point Marc. Following your logic I could use the hood from my 50mm on the 28 and 35mm lenses and get the one for the 85mm for my 50mm.

Tom G
10-11-2009, 03:41 PM   #7
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QuoteOriginally posted by SOldBear Quote
For your M-28mm and M-50mm, a 49-37mm and a 37-30.5mm step-down adapter ring will do nicely. I don't have the M-100mm macro but I have a feeling you can do the same. Here are my F-50mm and my Tamron 90mm macro. My M-28mm has the same "lens hood" but I don't have its photo here.
Clever idea, SOldBear. This may be the best use for step-down rings ever.
01-06-2010, 06:48 PM   #8
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I was also looking for a hood for my FA 28mm.

I came across this auction which mentions is for 35 to 50mm standard lenses so I figured out it might work for the 28mm on a cropped sensor (it would be like a 42mm, right?).

The thing that made me doubt is that I also found this other auction, which seems to be the same hood but described for wide angle lenses, so before just buying just thought of asking if anyone had used a similar hood before. If not, I guess the hood is cheap enough that I'll bite the bullet to find out later.

6 Days Ago   #9
phs
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I use the Pentax MH-RA 49mm lens hood on my A 28 2.0. It's the dedicated hood of the FA 43 1.9. On APS-C, there is some vignetting even without the hood. With the hood on, the vignetting looks about the same. So I guess the hood is perfect on APS-C. The hood is aluminum with felt inner padding. Really good build. Looks like they're made for each other. Wish I had a cap to go with it.


Last edited by phs; 6 Days Ago at 10:52 PM.
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