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12-21-2009, 05:51 AM   #1
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Decent Metal Hood For My Fa50?

I'm after a decent metal hood for my FA50, preferably one that I can use a lenscap on.

I've done searching and people seem to say the rubber hoods are ok, but I don't like them as I'd rather something more solid.

I'd like this MLH49 Adorama 49mm Metal Lens Hood

But is there any difference between petal hoods or standard hoods?

12-21-2009, 05:56 AM   #2
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I have been looking for hoods for my primes for a while

one thing to consider is that many hoods that came with pentax lenses i.e. FA-J and earlier) are designed for a full frame and are under sized.

With respect to petal hoods or circular, petal hoods, if designed for the lens and format of sensor offer the best protection as they are designed at each point to be just out of the FOV of the lens., but usually circular hoods are OK for long lenses. they are designed to the maximum length to protect the corner of the frame only,

petal hoods also must orient themselves to the lens body anc cannot be used on designs that have the front element turn


A while back, I posted a link t a tool called hood calc that was used to calculate the length of a hood if you knew the diameter, for any lens

Last edited by Lowell Goudge; 12-21-2009 at 06:02 AM.
12-21-2009, 05:57 AM   #3
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Also I should add I'm interested in a decent diopter for the 50mm to give me 1:1 macro
12-21-2009, 05:57 AM   #4
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petal hood are designed to not block the FOV and not cause vignetting

12-21-2009, 06:28 AM   #5
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Cheers thanks for that!

Just wondering how do people actualy mount the Raynox 250 onto the Fa50 when it has a 43mm thread as opposed to the FA50's 49mm thread.
12-21-2009, 06:58 AM   #6
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For my F 50 f/1.7 I simply use the Takumar hood for the 55 1.8 / 50 1.4. Nothing better. This comes up on eBay quite a lot really.

See, for example:

http://cgi.ebay.ca/Lens-Hood-for-Takumar-50mm-f1-4-55mm-f1-8-55mm-f2_W0QQite...item3efa7775ba

I do use a pinch cap on it, but at the moment I cannot recall what the size is.

woof
12-21-2009, 07:35 AM   #7
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Any comments on this hood?

49mm Screw Mount Flower Camera Lens Hood for Olympus - eBay Digital Camera Lenses, Lenses, Photographic Accessories, Cameras. (end time 24-Dec-09 00:22:37 AEDST)
12-21-2009, 08:36 AM   #8
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the problem is you don't know the differences between the lens this hood was made for, including the sensor format and the pentax camera you are going to put it on,

petal hoods are designed specifically for one lens and one lens only.

do a search on the forum for hoodcalc and look at the link to the spreadsheet that gives you everything you need to inout for determining the size of the hood.

12-21-2009, 09:54 AM   #9
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When I use a hood on my 50 mm, I use the Takumar hood that came with my 135 mm. I know that it seems big. But, I try to get a hood that is big enough with out causing any vignette. Because of the circle size on the APS-C sensor, the hood works fine. These hoods are not to expensive and are metal, of course.
12-21-2009, 10:17 AM   #10
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QuoteOriginally posted by woof Quote
For my F 50 f/1.7 I simply use the Takumar hood for the 55 1.8 / 50 1.4. Nothing better. This comes up on eBay quite a lot really.

See, for example:

Lens Hood for Takumar 50mm f1.4, 55mm f1.8, 55mm f2 on eBay.ca (item 270490105274 end time 30-Nov-09 21:51:00 EST)

I do use a pinch cap on it, but at the moment I cannot recall what the size is.

woof
ditto for me
12-21-2009, 04:25 PM   #11
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QuoteOriginally posted by Russell-Evans Quote
Thanks for that, i'm suprised that it doesnt Vignette
12-21-2009, 07:40 PM   #12
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QuoteOriginally posted by C.W Tsorotes Quote
Thanks for that, i'm suprised that it doesnt Vignette
It does below f2.8. If you want down to f1.7 then use a 49-37mm. I just don't expect to need to use a hood and be below f2.8.

Thank you
Russell

Last edited by Russell-Evans; 12-22-2009 at 05:10 AM.
12-22-2009, 03:12 AM   #13
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Well if I shoot video I prefer the shallof DOF look and if shooting outdoors I would definately be using 1.4 and a hood would be essential.
12-22-2009, 05:05 AM   #14
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QuoteOriginally posted by C.W Tsorotes Quote
Well if I shoot video I prefer the shallof DOF look and if shooting outdoors I would definately be using 1.4 and a hood would be essential.


Maybe you should go for a Cokin A350 A System Modular Bellows Hood.



Minimum Extension: 1.8" (45mm)
Maximum Extension:5.1" (131mm)
Aperture Size: 5.1 x 3.1" (131 x 80mm) WxH clear opening
Dimensions: 6.1 x 4.0 x 1.8" (156 x 102 x 46mm) WxHxD [collapsed]
Weight:0.19 lb (85 g)



Thank you
Russell
12-22-2009, 06:45 AM   #15
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QuoteOriginally posted by C.W Tsorotes Quote
I'm after a decent metal hood for my FA50, preferably one that I can use a lenscap on.

I've done searching and people seem to say the rubber hoods are ok, but I don't like them as I'd rather something more solid.
What benefit is there to a more solid hood? If you're thinking it will protect the lens in case of a bump or fall, I don't agree. A metal hood will transmit most of the energy to the lens, whereas a rubber hood will cushion and absorb impact.

QuoteOriginally posted by C.W Tsorotes Quote
That will work fine. It was designed for a standard 50mm lens on a film camera. Using it on an APS-C camera doesn't make it less effective, it will still give the exact same coverage it gives on a full frame camera. The only difference a cropped sensor makes is that it can benefit from an even tighter hood, if you can find one. For example I use a rubber hood designed for standard (50ish mm) field of view with 35mm and 28mm lenses, and no vignetting. What you want for maximum coverage is a 49mm hood designed for telephoto, but you're taking a chance without trying it out, because it could be fine or it could vignette at wide aperture.

I prefer a collapsible rubber hood to metal because a rubber hood
- takes almost no room in my bag when folded up
- allows me to use a filter and lens cap easily. Just make sure that there are threads on the rubber hood. Fold the rubber hood back and screw a CPL filter in as easily as having no hood. Then flip the hood to shade the lens and take the shot. I don't believe you can use a CPL filter with a metal hood.

QuoteOriginally posted by C.W Tsorotes Quote
But is there any difference between petal hoods or standard hoods?
As others have stated, petals are designed for specific lenses and are not interchangeable. I use a single rubber hood for my 28, 35, 50 and 100mm lenses, which takes up virtually no room in my bag. The large plastic Pentax hoods for these lenses stay home.
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