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02-06-2008, 04:14 AM   #16
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When going with a deeper lens hood than standard for a lens, it's a good idea to try the hood on the lens, mounted on your camera. Open the aperture all the way, aim at a light-toned, flat wall or other illuminated surface, and look through the viewfinder at the corners for any vignetting (darkening of the corner). If the lens is a zoom, you'd want to check at the widest focal length. Deep hoods can sometimes interfere with the lens' angle of view, so it's good to check first if at all possible.

02-06-2008, 04:46 AM   #17
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That's good advice but I'd add you should take a picture of that uniform surface. Since the viewfinder only shows 95% of the image, there might be corner light drop off on a shot that doesn't show up in the viewfinder.
02-06-2008, 04:47 AM   #18
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Even better. Thanks, Peter!
02-06-2008, 09:02 AM   #19
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Thanks for the info everyone. Unfortunately, I will most likely be buying these online, so I can't try them out first hand.

I did a little geometry, hopefully correctly. The FA50 has a 47 degree field of view. I assumed this meant 47 degrees from the center of the lens.

I guessed the hood diameter was 49mm, which gave a hood length of about 56mm. With the 1.5 crop factor, that equates to 84mm length hood.

I then realized that the threads were 49mm, and that the good diameter must be larger than that! So I guessed the diameter to be 60mm. This gave 69mm (standard) and 103mm (DSLR) hood lengths. Can anyone give me dimensions of their hood, or at least let me know if I am in the ball park?

02-06-2008, 09:21 AM   #20
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The hood I showed you which come up on Ebay all the time here:https://www.pentaxforums.com/forums/160528-post8.html
is 52MM from the front edge of the hood to the threads. So this doesn't count the 2mm or so of the threads. Works perfectly on my FA50mm. more than deep enough and no vignetting. I add a 62mm pinch cap and leave the hood on all the time. if you want to add a CPL or UV filter it still works fine. A UV seems redundant but a CPL is needed a lot in daylight. Nice thing is with this hood screwed to the CPL, you just grab the large hood and turn it instead of fumbling with the small filter ring.
02-06-2008, 10:19 AM   #21
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I use one of these from Ebay with my F50/1.4: New! Metal Tele 49mm Screw-in Lens Hood - eBay (item 130195204864 end time Feb-09-08 08:44:30 PST)
It is a high quality hood and works very well (no vignetting).
02-06-2008, 11:49 AM   #22
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QuoteOriginally posted by zysgtc Quote
I use one of these from Ebay with my F50/1.4: New! Metal Tele 49mm Screw-in Lens Hood - eBay (item 130195204864 end time Feb-09-08 08:44:30 PST)
It is a high quality hood and works very well (no vignetting).
Thanks, I wasn't sure if I need to get the tele or standard length. I guess I'll go ahead and get the tele one.
02-14-2008, 02:53 PM   #23
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I've been using the A-50mm f/1.7 and I've noticed some flare creeping in. Is there any advantage to using a petal shaped hood vs a basic cylinder shape? I see Adorama has both:

MLH49 Adorama 49mm Metal Lens Hood

DL2049P Adorama 49mm Wide Angle Digital Lens Hood - Petal Shaped

02-09-2010, 10:12 PM   #24
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Resurrecting old thread...

I'm looking for a good hood for a manual 50mm lens (this thread seems to only discuss F & FA lenses. I think B&H has a rubber one that might work, but I'm looking for a solid one. Anyone have any suggestions?

Thanks.
02-10-2010, 02:40 AM   #25
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The hood of the DA70mm limited works very well also on the M 50mm 1.7 and FA 50mm 1.4. Plus it makes them look really cool
Little bit an expensive solution though if you do not own a DA 70 yet
02-10-2010, 11:23 AM   #26
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I've the original lenshood for the m85 and m100 on my A50.
The original hood for the Tak.135 is working well on the m85 and m100macro.
02-10-2010, 11:30 AM   #27
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look on the B&H web site, there are some excellent lens hoods from germany machined out of aluminum, they cost about $20 and are longer than standard 50mm hoods but are probably OK due to the crop factor and angle of view on a DSLR
02-10-2010, 01:14 PM   #28
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https://www.pentaxforums.com/forums/photographic-equipment-sale/88632-sale-lo...iffen-etc.html (first image)

This is the hood I'm using on my 50s. Not pretty in any way but probably the most effective hood.
Requires a step-up ring on the K-series lens - so if your lens has 52mm thread either get on of these or look out for a 52mm threaded hood.
02-10-2010, 01:30 PM   #29
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QuoteOriginally posted by Egg Salad Quote
https://www.pentaxforums.com/forums/photographic-equipment-sale/88632-sale-lo...iffen-etc.html (first image)

This is the hood I'm using on my 50s. Not pretty in any way but probably the most effective hood.
Requires a step-up ring on the K-series lens - so if your lens has 52mm thread either get on of these or look out for a 52mm threaded hood.
My manual 50 is threaded at 49, so I'd need a step up ring--I presume that's what you're doing on your 50's? Looks like it might be the way to go. I'm all for function over form.
02-10-2010, 03:30 PM   #30
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No actually it depends. The F 1.7/50 has a 49mm thread, the 1.4/50 52mm. So I need the step up ring to use the hood on the "K". But there is also a 52mm version of the hood so you could go for this instead. Fortunately mission solved you can just go for the 49mm one which itsef has an effective lenght (not diameter) of 52mm.
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