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ajuett · 03-02-2010, 05:38 PM

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.

PrimeObjectif · 03-02-2010, 05:45 PM

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.

icywarm · 03-02-2010, 05:56 PM

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!

SOldBear · 03-02-2010, 06:06 PM

This lens hood makes the lens look less big:

ajuett · 03-02-2010, 06:38 PM

OK, here is a better view, the first image does make the FA50 and hood larger than it actually is.

twokatmew · 03-02-2010, 07:06 PM

Originally posted by SOldBear

This lens hood makes the lens look less big:

What hood is that? I'd like to get one that small for my FA50.

SOldBear · 03-02-2010, 07:23 PM

Originally posted by twokatmew

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:

icywarm · 03-02-2010, 07:23 PM

Does that work wide open? I think it would have to cause some corners...

SOldBear · 03-02-2010, 07:26 PM

Originally posted by icywarm

Does that work wide open? I think it would have to cause some corners...

Yup. It does work wide open.

lesmore49 · 03-02-2010, 07:32 PM

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.

Softsoap · 03-02-2010, 09:22 PM

Originally posted by ajuett

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!!!

SOldBear · 03-02-2010, 09:32 PM

Originally posted by Softsoap

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.

ajuett · 03-02-2010, 09:36 PM

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.

twokatmew · 03-03-2010, 11:36 AM

Originally posted by SOldBear

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.

SOldBear · 03-03-2010, 12:10 PM

Originally posted by twokatmew

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.

Quote:

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.

03-02-2010, 05:38 PM	#1
ajuett Inactive Account Join Date: Jul 2008 Location: Vancouver, Canada Posts: 1,100	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.

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03-02-2010, 05:45 PM	#2
PrimeObjectif Veteran Member Join Date: Jan 2009 Location: New York Photos: Albums Posts: 599	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
icywarm Veteran Member Join Date: Jan 2010 Location: Saskatchewan Photos: Gallery \| Albums Posts: 1,278	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
SOldBear Veteran Member Join Date: Feb 2009 Location: Alameda, CA Posts: 3,206	This lens hood makes the lens look less big:

03-02-2010, 06:38 PM	#5
ajuett Inactive Account Join Date: Jul 2008 Location: Vancouver, Canada Posts: 1,100 Original Poster	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
twokatmew Veteran Member Join Date: Jan 2010 Location: Lansing, MI Photos: Albums Posts: 509	Originally posted by SOldBear 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
SOldBear Veteran Member Join Date: Feb 2009 Location: Alameda, CA Posts: 3,206	Originally posted by twokatmew 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, 07:26 PM	#9
SOldBear Veteran Member Join Date: Feb 2009 Location: Alameda, CA Posts: 3,206	Originally posted by icywarm 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
lesmore49 Pentaxian Join Date: Nov 2007 Location: Western Canada Posts: 12,350	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
Softsoap Forum Member Join Date: Feb 2010 Location: Wisconsin Posts: 51	Originally posted by ajuett 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
SOldBear Veteran Member Join Date: Feb 2009 Location: Alameda, CA Posts: 3,206	Originally posted by Softsoap 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
ajuett Inactive Account Join Date: Jul 2008 Location: Vancouver, Canada Posts: 1,100 Original Poster	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
twokatmew Veteran Member Join Date: Jan 2010 Location: Lansing, MI Photos: Albums Posts: 509	Originally posted by SOldBear 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
SOldBear Veteran Member Join Date: Feb 2009 Location: Alameda, CA Posts: 3,206	Originally posted by twokatmew 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. Quote: 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.

K-x and the FA 50mm and a hood

Win a Pentax Limited Lens: Raffle Now Live!