Cutting/removing the lens off a HVX ? at DVinfo.net

Go Back   DV Info Net > Panasonic P2HD / AVCCAM / AVCHD / DV Camera Systems > Panasonic P2HD / DVCPRO HD Camcorders

Panasonic P2HD / DVCPRO HD Camcorders
All AG-HPX and AJ-PX Series camcorders and P2 / P2HD hardware.


Reply
 
Thread Tools Search this Thread
Old December 21st, 2006, 10:46 AM   #1
Trustee
 
Join Date: Oct 2003
Location: Toronto, Canada
Posts: 1,055
Cutting/removing the lens off a HVX ?

Has anyone here tried or have any experience removing the stock lens from a HVX? Anyone gone that far in taking one apart that they could provide testament to it's ease or difficulty? Any manuals or such would be highly appreciated.

I'm looking at designing a 35mm mod for HVX cameras that will yield an overall brighter setup compared to traditional methods.

In theory the mod could provide an effective light "gain" of 2 stops when using 35mm setup.

This would effectively mean you could bet back to the cameras original working ASA. (ie. approx 400 for the HVX) Currently with most 35mm add-on adapters you end up with an approximate working ASA of 100, or between 50 and 60 once you throw a 35mm lens into the equation.

This is impractical for most film style lighting setups, particularly indoor.

If you don't understand the relationship between ASA, f stops and shutter speeds? Here's a really good read: http://www.uscoles.com/fstop.htm

Last edited by Dennis Hingsberg; December 21st, 2006 at 10:13 PM.
Dennis Hingsberg is offline   Reply With Quote
Old December 21st, 2006, 01:40 PM   #2
Go Go Godzilla
 
Join Date: Nov 2004
Location: Scottsdale, AZ USA
Posts: 2,739
Images: 15
Dennis,

I would not even recommend attempting such a venture, regardless what your level of technical expertise is. I don't remember where I saw it, but somewhere on the 'net you'll find a cutaway view of the HVX and other handheld cams currently on the market which clearly illustrates why this would be a completely destructive operation.

The lens elements and the internal mechanisms that control them are literally integral parts to the body; you could not disassemble the lens from the camera without adversely affecting both the imaging chip and the rest of the camera electronics, not to mention completely ruining the built-in seals that protect the imaging chip and other sensitive internal parts from dust and other airborne contaminants.

What you're proposing to do - create a 35mm lens adapter that doesn't shoot through the built-in lens - has always been a sought after dream for most of the handheld cam owners, and one reason cameras like the XL series and the JVC 100/150 series are favorites for those with lens adapters.

In short, physically removing the lens assembly and associated mechanisms means you would in effect permanently change and even destroy an HVX - or any other camera with a built-in lens. The money invested in trying to create such a device would be better spent in purchasing a camera body designed for removable lenses.
__________________
Producer/CEO
Reel Lane Films LLC
Robert Lane is offline   Reply With Quote
Old December 21st, 2006, 02:21 PM   #3
Major Player
 
Join Date: Jun 2003
Location: Golden, CO
Posts: 681
Quote:
Originally Posted by Robert Lane
I would not even recommend attempting such a venture, regardless what your level of technical expertise is. I don't remember where I saw it, but somewhere on the 'net you'll find a cutaway view of the HVX and other handheld cams currently on the market which clearly illustrates why this would be a completely destructive operation.
If anyone wants to donate their HVX, I will gladly attempt such an operation. ;-) My work is absolutely NOT guaranteed. Hehe... I promise I will return all parts after the experimentation is done and they will show no more signs of wear or use than can be expected with excessive amounts of cutting, grinding, prying, breaking and filing. Oh, I promise I won't use a torch unless I've had a few beers first.
__________________
- Jeff Kilgroe
- Applied Visual Technologies | DarkScience
- www.darkscience.com
Jeff Kilgroe is offline   Reply With Quote
Old December 21st, 2006, 03:30 PM   #4
Major Player
 
Join Date: Jun 2006
Location: St. Pete, FL
Posts: 223
Quote:
Originally Posted by Robert Lane
In short, physically removing the lens assembly and associated mechanisms means you would in effect permanently change and even destroy an HVX - or any other camera with a built-in lens.
What about the guy who modded his FX1?
Sam Jankis is offline   Reply With Quote
Old December 21st, 2006, 03:39 PM   #5
Go Go Godzilla
 
Join Date: Nov 2004
Location: Scottsdale, AZ USA
Posts: 2,739
Images: 15
The advice given was that it's not recommended and with this type of mod there is a much greater chance of completely destroying the unit than having any success. There will always be those who are willing to make sacrifices in the spirit of experimentation.
__________________
Producer/CEO
Reel Lane Films LLC
Robert Lane is offline   Reply With Quote
Old December 21st, 2006, 03:49 PM   #6
Major Player
 
Join Date: Aug 2003
Location: Los Angeles, CA
Posts: 817
Quote:
Originally Posted by Robert Lane
In short, physically removing the lens assembly and associated mechanisms means you would in effect permanently change and even destroy an HVX
I do believe that was the point. We've had people talk about taking about DVX's here to mod the electronics... I'd be interested to hear if anyone has dug in with the HVX.

Anything can be disassembled, especially given that it was assembled in the first place. I've known many people who would buy $5000 electronic equipment and take them apart... mostly to make them better. It's a lifestyle choice.
__________________
Barry Gribble
Integral Arts, IMDB
Barry Gribble is offline   Reply With Quote
Old December 22nd, 2006, 12:40 AM   #7
Inner Circle
 
Join Date: May 2006
Location: Camas, WA, USA
Posts: 5,513
It's like Vegas, isn't it? Only bring the money to the table that you are willing to lose. And have fun whether you double your wad, or lose it. Also, learn the rules and strategies of the game before you trade your cash for chips.

The gamble of modding an HVX might really pay off.

...or not.

Could be a fun project though.
__________________
Jon Fairhurst
Jon Fairhurst is offline   Reply With Quote
Old December 22nd, 2006, 10:18 AM   #8
Trustee
 
Join Date: Oct 2003
Location: Toronto, Canada
Posts: 1,055
Sam, thank you for that link. I was extremely impressed by the mod-work performed by Matteo Ricchet and will be contacting him in the not so distant future.

I appreciate everyone's comments here. It is true that such an idea would seem so absurd to some but realized by others.

The obvious solution is to just go with the XLH1 or HD100 and come up with a direct add on adapter. But so far when weighing price, footprint, functionality, P2 card vs tape vs SDI, etc.. the list goes on and on and the choice to do this to an HVX becomes more and more obvious.

I'm currently looking to buy a HVX used and will go from there. Such a task will certainly not be an easy or fast one but certainly possible. I've had a lot of experience modding Sony equipment over the years as well writing code for modchips - likely some of that experience will come in handy as time goes on.

Thanks again everyone for your posts so far.

If anyone has diagrams or anything else that might be helpful (like a smashed up HVX for sale) please let me know.
Dennis Hingsberg is offline   Reply With Quote
Old December 22nd, 2006, 10:36 AM   #9
Major Player
 
Join Date: Aug 2003
Location: Los Angeles, CA
Posts: 817
Good luck Dennis, and keep us informed.
__________________
Barry Gribble
Integral Arts, IMDB
Barry Gribble is offline   Reply With Quote
Old December 22nd, 2006, 11:27 AM   #10
Inner Circle
 
Join Date: Nov 2005
Location: Elk Grove CA
Posts: 6,838
I love the plan, and the guts, and the fact it is backed up by technical experience. I saw the Italian FX1, if I recall.. and would love to know what the ultimate results were...
__________________
Chris J. Barcellos
Chris Barcellos is offline   Reply With Quote
Old December 22nd, 2006, 12:08 PM   #11
Inner Circle
 
Join Date: Dec 2005
Location: Bracknell, Berkshire, UK
Posts: 4,957
Don't forget the multiplication factor using 35mm lenses on 1/3" CCD's. Your going to be stuck with some pretty long focal lengths.
__________________
Alister Chapman, Film-Maker/Stormchaser http://www.xdcam-user.com/alisters-blog/ My XDCAM site and blog. http://www.hurricane-rig.com
Alister Chapman is offline   Reply With Quote
Old December 22nd, 2006, 04:25 PM   #12
Regular Crew
 
Join Date: Apr 2006
Location: leeds uk
Posts: 38
Quote:
Originally Posted by Alister Chapman
Don't forget the multiplication factor using 35mm lenses on 1/3" CCD's. Your going to be stuck with some pretty long focal lengths.
Not if ground glass is employed !
Think Brevis but without the stock lens.
Matt Burton is offline   Reply With Quote
Old December 23rd, 2006, 11:08 AM   #13
Trustee
 
Join Date: Oct 2003
Location: Toronto, Canada
Posts: 1,055
Found this image on Matteo's site.

http://www.eidomedia.com/hdv/test/fi...IMG_0164_R.jpg

This is exactly like something I'm looking to do.
Dennis Hingsberg is offline   Reply With Quote
Old December 23rd, 2006, 04:03 PM   #14
Regular Crew
 
Join Date: Apr 2006
Location: leeds uk
Posts: 38
Quote:
Originally Posted by Dennis Hingsberg
Found this image on Matteo's site.

http://www.eidomedia.com/hdv/test/fi...IMG_0164_R.jpg

This is exactly like something I'm looking to do.
So do you think you could pull it off ?
Matt Burton is offline   Reply With Quote
Old December 23rd, 2006, 04:18 PM   #15
Major Player
 
Join Date: Jun 2003
Location: Golden, CO
Posts: 681
Quote:
Originally Posted by Dennis Hingsberg
Found this image on Matteo's site.

http://www.eidomedia.com/hdv/test/fi...IMG_0164_R.jpg

This is exactly like something I'm looking to do.
I would say it's possible with the HVX... I'm not sure what you really hope to gain from it though -- lots of time and effort spent on such a thing could easily be applied somewhere else. Given the way camera prices are shuffling about these days and it looks like systems such as RED will deliver 10X or more what the HVX is offering for about 4X the price, I'm seeing less attraction to modifying low-end cameras. As much as you mod the HVX, it's still going to be a noisy, pixel-shifted, 1/3" CCD block... IMO, a much more worthy hack would be to get RAW footage out of the thing like what Andromeda has done for the DVX.

But then again.. As Barry Gribble said above, "it's a lifestyle choice". Too right... Some people just like to tinker with things. Personally, I don't find a lot of appeal in tinkering with something I've paid several thousand $$$ for... I tinker with my computers, but I still wait until the fair market eBay value of my notebook is $500 or less before I hack it to pieces and build a robot out of it.
__________________
- Jeff Kilgroe
- Applied Visual Technologies | DarkScience
- www.darkscience.com
Jeff Kilgroe is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Panasonic P2HD / AVCCAM / AVCHD / DV Camera Systems > Panasonic P2HD / DVCPRO HD Camcorders

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 02:33 AM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network