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04-24-2011, 02:32 AM   #1
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Hood & Filter

I am having Pentax-DA 35mm F2.4 AL with 49mm for the filter, now my question is, if I fix a polarizing filter since the thread in the lens is occupied by the filter - how the hood can be fixed or is there a different way to fix the hood to lens. Sorry I have not seen or used a filter or a hood. Pls advice.


04-24-2011, 09:41 AM   #2
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If it is a screw-in lens hood, just screw it into the filter. If you see vignetting (dimming at the corners of the image) then you need a wider hood.
04-24-2011, 09:47 AM   #3
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You screw the 49mm filter into the lens, and then thread a 49mm hood onto the filter. I would take a picture of my setup but apparently my second camera is in the car with my wife out of town at the moment.
04-24-2011, 11:08 AM   #4
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Thanks that makes the 'how it works' clear for me. Also RioRico's comment on vignetting makes me nervous - isn't there anything clear cut as it sounds like a trial and error method.

04-24-2011, 12:50 PM - 1 Like   #5
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QuoteOriginally posted by sany Quote
Thanks that makes the 'how it works' clear for me. Also RioRico's comment on vignetting makes me nervous - isn't there anything clear cut as it sounds like a trial and error method.
Not trial and error, but some test shots. Take a picture of a clear blank white wall. Chimp it -- review it on the LCD screen. Zoom in a few steps. Scroll to the corners of the picture. If they look dark, you have some vignetting. Take off the hood and repeat. If you see the same amount of vignetting, it is not the fault of the hood.
04-24-2011, 03:09 PM   #6
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Do you already own the lens hood or are you going to buy one?
04-24-2011, 07:24 PM   #7
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Not having a dedicated hood mount is a pretty gross design defect for any lens. It's very disappointing if that's the case with this lens.

Paul
04-25-2011, 03:31 AM   #8
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Umm, most lenses DO have hood mounts. They're called front threads.

04-25-2011, 04:55 PM   #9
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QuoteOriginally posted by RioRico Quote
Umm, most lenses DO have hood mounts. They're called front threads.
A front filter thread is a poor mount for a lens hood. My 100-300mm Pentax suffers from this design limitation, but I bought it (used) knowing this. So it may not be a fatal limitation, but it's a limitation. My other lenses have better hood mounting mechanisms.

Paul
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