40.5 to 37mm step down ring - how much vignetting?

GibbyTheMole · 01-05-2013, 09:03 AM

Anyone ever used a 40.5 to 37mm step down ring to attach video lens attachments to the Q 02 zoom? How much vignetting can I expect?

Docrwm · 01-05-2013, 09:10 AM

Good question. I ordered one from Adorama but a computer glitch got me the 37 to 40.5 step-up ring instead. Helen fixed it for me but I haven't been able to use it because it arrived while I'm on vacation. I had a couple 37mm filters from an older video camera that ought to be useful.

snostorm · 01-05-2013, 11:39 AM

Originally posted by GibbyTheMole

Anyone ever used a 40.5 to 37mm step down ring to attach video lens attachments to the Q 02 zoom? How much vignetting can I expect?

Hi GibbyTheMole,

I just tried it as I've got a step down to 37mm. There isn't any that I can see throughout the entire zoom range. I only checked it at wide open and looked through the LCD at the sky.

Be careful when adding relatively heavy add-ons to the lenses -- they were designed for very light weight, and are relatively fragile when it comes to hanging weight off the front. The zoom mechanism on the Q zooms is the most susceptible to damage this way as it seems that the helicoils are plastic.

A friend has been experimenting with some pretty heavy add ons with the 06 zoom, and he's told me that the zoom ring has gotten a bit sticky.

I've collected a few of the-best rated of these (all TCs), and when I get the step rings to mount them, I'll post some results.

Scott

GibbyTheMole · 01-05-2013, 04:36 PM

Originally posted by snostorm

Be careful when adding relatively heavy add-ons to the lenses -- they were designed for very light weight, and are relatively fragile when it comes to hanging weight off the front.

Yep. I was gonna find the smallest. lightest 37mm video fisheye attachment & give it a try. Should work ok for that I would think. Is there a fisheye attachment you could recommend for use with the 02 zoom? I know I won't get the quality of the actual Pentax fisheye, but it'll be something to hold me over for awhile.

Thanks for the helpful info. Really digging the Q! (And I wound up picking one up for the missus. That didn't take long!)

Cheers,
Bobbo :-)

Docrwm · 01-05-2013, 05:48 PM

Originally posted by GibbyTheMole

Yep. I was gonna find the smallest. lightest 37mm video fisheye attachment & give it a try. Should work ok for that I would think. Is there a fisheye attachment you could recommend for use with the 02 zoom? I know I won't get the quality of the actual Pentax fisheye, but it'll be something to hold me over for awhile.

Thanks for the helpful info. Really digging the Q! (And I wound up picking one up for the missus. That didn't take long!)

Cheers,
Bobbo :-)

That sounds interesting. I have an ND8 in 37mm from Sony but until you mentioned the fisheye had forgotten that I have a Sony Wide Conversion Lens x0.6 in 37mm and a 37mm hood too.

Now to get back and get the step-down ring and try them out on the Q. \

How is the wife liking her Q?

GibbyTheMole · 01-05-2013, 11:10 PM

Originally posted by Docrwm

How is the wife liking her Q?

It hasn't been shipped yet. She's monopolizing mine, so I'd say she's digging it . :-)

01-05-2013, 09:03 AM	#1
GibbyTheMole Veteran Member Join Date: Nov 2009 Location: Iowa Photos: Albums Posts: 2,275	40.5 to 37mm step down ring - how much vignetting? Anyone ever used a 40.5 to 37mm step down ring to attach video lens attachments to the Q 02 zoom? How much vignetting can I expect?

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01-05-2013, 09:10 AM	#2
Docrwm Veteran Member Join Date: Sep 2010 Location: Somewhere in the Southern US Photos: Gallery \| Albums Posts: 12,285	Good question. I ordered one from Adorama but a computer glitch got me the 37 to 40.5 step-up ring instead. Helen fixed it for me but I haven't been able to use it because it arrived while I'm on vacation. I had a couple 37mm filters from an older video camera that ought to be useful.

01-05-2013, 11:39 AM	#3
snostorm Veteran Member Join Date: Oct 2006 Location: Chicago suburb, IL, USA Posts: 1,535	Originally posted by GibbyTheMole Anyone ever used a 40.5 to 37mm step down ring to attach video lens attachments to the Q 02 zoom? How much vignetting can I expect? Hi GibbyTheMole, I just tried it as I've got a step down to 37mm. There isn't any that I can see throughout the entire zoom range. I only checked it at wide open and looked through the LCD at the sky. Be careful when adding relatively heavy add-ons to the lenses -- they were designed for very light weight, and are relatively fragile when it comes to hanging weight off the front. The zoom mechanism on the Q zooms is the most susceptible to damage this way as it seems that the helicoils are plastic. A friend has been experimenting with some pretty heavy add ons with the 06 zoom, and he's told me that the zoom ring has gotten a bit sticky. I've collected a few of the-best rated of these (all TCs), and when I get the step rings to mount them, I'll post some results. Scott

01-05-2013, 04:36 PM	#4
GibbyTheMole Veteran Member Join Date: Nov 2009 Location: Iowa Photos: Albums Posts: 2,275 Original Poster	Originally posted by snostorm Be careful when adding relatively heavy add-ons to the lenses -- they were designed for very light weight, and are relatively fragile when it comes to hanging weight off the front. Yep. I was gonna find the smallest. lightest 37mm video fisheye attachment & give it a try. Should work ok for that I would think. Is there a fisheye attachment you could recommend for use with the 02 zoom? I know I won't get the quality of the actual Pentax fisheye, but it'll be something to hold me over for awhile. Thanks for the helpful info. Really digging the Q! (And I wound up picking one up for the missus. That didn't take long!) Cheers, Bobbo :-)

01-05-2013, 05:48 PM	#5
Docrwm Veteran Member Join Date: Sep 2010 Location: Somewhere in the Southern US Photos: Gallery \| Albums Posts: 12,285	Originally posted by GibbyTheMole Yep. I was gonna find the smallest. lightest 37mm video fisheye attachment & give it a try. Should work ok for that I would think. Is there a fisheye attachment you could recommend for use with the 02 zoom? I know I won't get the quality of the actual Pentax fisheye, but it'll be something to hold me over for awhile. Thanks for the helpful info. Really digging the Q! (And I wound up picking one up for the missus. That didn't take long!) Cheers, Bobbo :-) That sounds interesting. I have an ND8 in 37mm from Sony but until you mentioned the fisheye had forgotten that I have a Sony Wide Conversion Lens x0.6 in 37mm and a 37mm hood too. Now to get back and get the step-down ring and try them out on the Q. \ How is the wife liking her Q?

01-05-2013, 11:10 PM	#6
GibbyTheMole Veteran Member Join Date: Nov 2009 Location: Iowa Photos: Albums Posts: 2,275 Original Poster	Originally posted by Docrwm How is the wife liking her Q? It hasn't been shipped yet. She's monopolizing mine, so I'd say she's digging it . :-)