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03-21-2012, 08:44 PM   #1
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lens hood length question

for a m50 f2 pentax lens on my k1000 what would be a better lens hood? any help is greatly appreciated thanks

a wide angle lens hood
New Metal Wide Angle 49mm Screw-in Lens Hood + Cap | eBay

or a standard size?
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03-21-2012, 08:56 PM   #2
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Standard size. This is a clone of the OEM hood and is great because it collapses: http://www.ebay.com/itm/Lens-hood-As-PENTAX-RH-RC49-50MM-35MM-w-49MM-diamete...item5d32aee917

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03-21-2012, 09:03 PM   #3
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QuoteOriginally posted by Adam Quote
Standard size. This is a clone of the OEM hood and is great because it collapses: Lens hood As PENTAX RH-RC49 50MM 35MM w/ 49MM diameter | eBay
thank you for the help. its great that a new comer and beginner with these cameras can come on here for help with just about everything with regards to these cameras. thanks again
03-22-2012, 03:41 AM   #4
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Somewhere in the forums is a spreadsheet that I happened onto and uploaded, which permits calculation of the maximum circular hood length for any lens.

Tie file is called hoodcalc and is relatively simple to use.

All you need to know is the hood diameter, the actual front element diameter (not the filter thread) and how far recessed the front element is om the end of the filter threads.

With that information you will know the maximum length before vignetting

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