Concept- Focus Wheel for HV20 at DVinfo.net

Chris Barcellos · July 13th, 2007, 09:03 PM

Some of the boys have been kicking around a Focus Wheel concept for the HV20 elsewhere on the web. I picked up on it and while perusing through Toy R Us found a K'nex building kit that had a promising wheel in it. (K'Nex 4x speeders #3)

This prototype is just attached with velcro, and the rubber wheel lays right on the tine focusing roller. You can actually use your finger on the wheel just like it is a 35mm lens and it I am surprised how easy it works-- even with this rigged system. With just a little work, it could even look professional. See photos below, but forgive focus issues...

Tim Haas · July 14th, 2007, 06:28 AM

i had been thinking about doing something kind of like this and you just proved it's feasibility. this looks brilliant. 4 bucks gets you a completely usable focus wheel, and i already have probably around 5 kajillion knex pieces from many, many moons ago tucked in a closet somewhere... time to start searching.

does it grip the little focus-cylinder well enough, like, is there any slipping?

Chris Barcellos · July 14th, 2007, 01:21 PM

Quote:

Originally Posted by Tim Haas

i had been thinking about doing something kind of like this and you just proved it's feasibility. this looks brilliant. 4 bucks gets you a completely usable focus wheel, and i already have probably around 5 kajillion knex pieces from many, many moons ago tucked in a closet somewhere... time to start searching.

does it grip the little focus-cylinder well enough, like, is there any slipping?

THe serrations on the focus wheel and nobby tires actually fibrated a bit, so I since reversed the tire giving it a smoother surface, and it worked fine.

Pieter Jongerius · July 14th, 2007, 01:56 PM

/!\ OT Alert: Chris, what's that mean-looking lens-and-ring-thing you got attached there? A wide-angle setup? (looking for something with not too much barrel distortion). Thanks, Pieter

Chris Barcellos · July 14th, 2007, 05:39 PM

Pieter, just a $5.00 collapsable rubber lens shade I got of Ebay....

July 13th, 2007, 09:03 PM	#1
Chris Barcellos Inner Circle Join Date: Nov 2005 Location: Elk Grove CA Posts: 6,838	Concept- Focus Wheel for HV20 Some of the boys have been kicking around a Focus Wheel concept for the HV20 elsewhere on the web. I picked up on it and while perusing through Toy R Us found a K'nex building kit that had a promising wheel in it. (K'Nex 4x speeders #3) This prototype is just attached with velcro, and the rubber wheel lays right on the tine focusing roller. You can actually use your finger on the wheel just like it is a 35mm lens and it I am surprised how easy it works-- even with this rigged system. With just a little work, it could even look professional. See photos below, but forgive focus issues... Attached Thumbnails __________________ Chris J. Barcellos

July 14th, 2007, 05:39 PM	#5
Chris Barcellos Inner Circle Join Date: Nov 2005 Location: Elk Grove CA Posts: 6,838	Pieter, just a $5.00 collapsable rubber lens shade I got of Ebay.... __________________ Chris J. Barcellos

July 14th, 2007, 06:28 AM	#2
Tim Haas New Boot Join Date: May 2007 Location: Yorkville IL Posts: 6	i had been thinking about doing something kind of like this and you just proved it's feasibility. this looks brilliant. 4 bucks gets you a completely usable focus wheel, and i already have probably around 5 kajillion knex pieces from many, many moons ago tucked in a closet somewhere... time to start searching. does it grip the little focus-cylinder well enough, like, is there any slipping?

July 14th, 2007, 01:56 PM	#4
Pieter Jongerius Regular Crew Join Date: Jan 2007 Location: Netherlands Posts: 101	/!\ OT Alert: Chris, what's that mean-looking lens-and-ring-thing you got attached there? A wide-angle setup? (looking for something with not too much barrel distortion). Thanks, Pieter