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03-02-2010, 05:38 PM   #1
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K-x and the FA 50mm and a hood

Just bought the FA 50mm today after searching high and low around town. Not only a year ago this lens was pretty available, now it seems scarce. I have a 49mm plastic hood that came with the A 50mm f/1.7 that makes a perfect match on the FA 50.

No pictures, yet but here is with the hood.



03-02-2010, 05:45 PM   #2
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I never knew that anything could make a 49mm diameter lens look big, but I guess the K-x does! Looks like you can do some serious low-light shooting with that combo.
03-02-2010, 05:56 PM   #3
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The reason it looks big is because it is clearly a macro shot, 1:1 with the mirror... think steve job, SNL, ipod inviso.... enjoy the set-up, I love mine!
03-02-2010, 06:06 PM   #4
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This lens hood makes the lens look less big:



03-02-2010, 06:38 PM   #5
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OK, here is a better view, the first image does make the FA50 and hood larger than it actually is.



03-02-2010, 07:06 PM   #6
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QuoteOriginally posted by SOldBear Quote
This lens hood makes the lens look less big:

What hood is that? I'd like to get one that small for my FA50.
03-02-2010, 07:23 PM   #7
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QuoteOriginally posted by twokatmew Quote
What hood is that? I'd like to get one that small for my FA50.
It's pretty simple, a 49-37mm followed by a 37-30.5mm step-down ring adapter:





I use the same setup for my DA 70mm, DA 21mm, FA-50mm and F-28mm (I found out that a single 49-28mm step-down adapter ring also works for DA 70mm, FA-50mm 1:1.7, and F-28mm 1:2.8):





A 55-37mm followed by a 37-30.5mm setup for my Sigma 50mm Macro and Tamron 90mm Macro:





For my Vivitar Close-Focusing 135mm (62mm filter thread), a 62-49mm step-down ring adapter followed by a Pentax 49mm metal hood:


03-02-2010, 07:23 PM   #8
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Does that work wide open? I think it would have to cause some corners...

03-02-2010, 07:26 PM   #9
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QuoteOriginally posted by icywarm Quote
Does that work wide open? I think it would have to cause some corners...
Yup. It does work wide open.
03-02-2010, 07:32 PM   #10
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I bought, for my 50 mm f 1.4 FA, a rubber pop out lens hood for a couple of bucks...new old stock works well.
03-02-2010, 09:22 PM   #11
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QuoteOriginally posted by ajuett Quote
Just bought the FA 50mm today after searching high and low around town. Not only a year ago this lens was pretty available, now it seems scarce. I have a 49mm plastic hood that came with the A 50mm f/1.7 that makes a perfect match on the FA 50.

No pictures, yet but here is with the hood.


Where did you find that lens?? I want to get one too, after hearing the 1.7 is sharper than the 1.4...
I can't find it!!!
03-02-2010, 09:32 PM   #12
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QuoteOriginally posted by Softsoap Quote
Where did you find that lens?? I want to get one too, after hearing the 1.7 is sharper than the 1.4...
I can't find it!!!
His lens is a 1.4, not 1.7.
03-02-2010, 09:36 PM   #13
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It's funny you mention the A 50 f/1.7 is sharper than the FA 50 f/1.4 because, it is.

I just did a test and not only is the A 50 sharper, it has zero color fringing, even wide open at f/1.7. The FA 50 had mainly green and some red fringing right up to f/2.8 on a piece of paper that only had b&w print on it. Clearly visible at 50% and unacceptable at 100% The A 50 copy I have mops the floor with the FA 50. Unfortunately, the FA 50 is going back after only a day.
03-03-2010, 11:36 AM   #14
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QuoteOriginally posted by SOldBear Quote
It's pretty simple, a 49-37mm followed by a 37-30.5mm step-down ring adapter:

I thought it looked like a step-down ring! I just didn't realize there were two there.

Frankly I'm amazed that two step-downs to 30.5mm doesn't cause vignetting ... but good it doesn't! Why'd you decide to go so small?

One reason I sold my Sigma 30mm/1.4 is that practically *everything* caused vignetting.

What would you recommend for my DAL50-200? I have a tulip hood for my DAL18-55, a 49mm folding rubber hood which I use on my 50/1.4 and 35-70/3.5-4.5, and I believe I have a 52-49mm step-down ring, so I've got several options to try with the 50-200. I don't want to spend much, so a genuine Pentax hood for this lens is out.
03-03-2010, 12:10 PM   #15
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QuoteOriginally posted by twokatmew Quote
Frankly I'm amazed that two step-downs to 30.5mm doesn't cause vignetting ... but good it doesn't! Why'd you decide to go so small?
I was inspired by the hood of the DA 40mm Ltd. When I first got it, I told myself, "If it doesn't cause vignetting with 40mm, it shouldn't with 50mm either." One thing after another, now all of my prime lenses have that kind of "hood."

The DA 21mm Ltd. actually hits the limit. I had to use a very thin 49-37mm ring. If it were even 0.5mm thicker, it would cause vignetting.

QuoteQuote:
What would you recommend for my DAL50-200? I have a tulip hood for my DAL18-55, a 49mm folding rubber hood which I use on my 50/1.4 and 35-70/3.5-4.5, and I believe I have a 52-49mm step-down ring, so I've got several options to try with the 50-200. I don't want to spend much, so a genuine Pentax hood for this lens is out.
This kind of hood does not work for any zoom lens that I have. For zoom lenses, I use either the supplied petal-shaped hood, or a folding rubber hood.
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