Leica lens on the HVX200 - Page 2 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 January 1st, 2006, 02:13 PM   #16
Major Player
 
Join Date: Oct 2004
Location: Helsinki, Finland
Posts: 158
Quote:
Originally Posted by Robert Lane
First, there would be no logic for either Leica or Panasonic to invest in the same type of elements that go into 35mm film bodies for the HVX or any digital video camera - there simply isn't enough resolving power in any video chipset to take advantage of the added resolution the lens would be capable of.
Maybe you missed my reply, but AFAIK resolving power means certain amount of lp/mm with certain MTF.
I just gave an example of how small chip video camera needs more resolving power than 35mm film.
Of course there are also other things that affect price/quality ratio (mechanics, production volumes etc.), but resolving power is usually considered to be the most important one.

Still cameras have and should have more resolution than moving image cameras but that's because of bigger image circles, not because of higher resolving power. Bigger image circle cost more money, but the most expensive attribute is resolution, so going beyond 125lp/mm (which is needed for full hd resolution with smaller chips than 2/3") should cost more than Zeiss Digiprimes (if manufactured and sold with similiar quantitatives & profits)...
Toke Lahti is offline   Reply With Quote
Old January 1st, 2006, 02:59 PM   #17
Inner Circle
 
Join Date: Oct 2001
Location: Honolulu, HI
Posts: 2,053
Quote:
Originally Posted by Jan Crittenden Livingston
Actually Leica is involved with the design of the lens and they have to approve the final manufacture or we cannot use their name. There is a quality assurance on their part to protect their good name. From what I have seen it is one of the nicest lenses on a hand-held HD camcorder.
Hello Jan...

Is Panasonic considering the possibility of marketing a matched wide angle adapter for this camera?

For the sort of work I do I often find a need to get the 35mm equivalent coverage of a 28mm or 24mm lens.
__________________
Dean Sensui
Exec Producer, Hawaii Goes Fishing
Dean Sensui is offline   Reply With Quote
Old January 1st, 2006, 04:57 PM   #18
Major Player
 
Join Date: Oct 2004
Location: Helsinki, Finland
Posts: 158
Quote:
Originally Posted by Robert Graf
The CCD block is likely to have either 960x1080 or 1280x1080 resolution.
There are also some insightful calculations here:
http://www.dvinfo.net/conf/showthread.php?t=55325
For starters, problem with those calculations is that 2/3" imager does not have a diameter of 0.67 inches; that's the size of image circle that the lens produces.
Real diameter is 11 mm.

Secondly, it is said that hvx uses both horizontal and vertical pixel shift. So it having 1080 vertical pixels would be waste of sensitivity.

Also I'm not sure how useful it is to compare cameras that have been in production for years. Progress in imager tech is slow, but sensivity per area is increasing all the time.
Toke Lahti is offline   Reply With Quote
Old January 4th, 2006, 08:07 AM   #19
Trustee
 
Join Date: Apr 2005
Posts: 1,268
With all the lp/mm talking in this thread, remember that a Zeiss Digiprimes, supposedly the best HD lenses for 2/3" have only 56 lp/mm. Since 2/3" is twice as big as 1/3", a lens with 112 lp/mm would supposedly do as good for a 1920x1080 1/3" camera as the Digiprimes do for a 2/3" 1920x1080 camera. So a 100lp/mm could be enough for a 1280x720 1/3 camera.
Michael Maier is offline   Reply With Quote
Old January 4th, 2006, 01:56 PM   #20
Major Player
 
Join Date: Oct 2004
Location: Helsinki, Finland
Posts: 158
Quote:
Originally Posted by Michael Maier
Zeiss Digiprimes, supposedly the best HD lenses for 2/3" have only 56 lp/mm.
That's 56lp/mm with MTF of 90%.
If you accept lower MTF (real world imagery), resolving power is greater.
Toke Lahti is offline   Reply With Quote
Old January 4th, 2006, 04:00 PM   #21
Trustee
 
Join Date: Apr 2005
Posts: 1,268
You mean resolving power needs to be higher when MTF is lower?
Michael Maier is offline   Reply With Quote
Old January 7th, 2006, 08:55 AM   #22
Major Player
 
Join Date: Oct 2004
Location: Helsinki, Finland
Posts: 158
Here's a nice tutorial about what MTF means:
http://www.normankoren.com/Tutorials/MTF.html

So if you accept "detail" to be something that has only 50% difference in contrast, you get a lot more of those "details" than if you require 90%.
Toke Lahti is offline   Reply With Quote
Old January 7th, 2006, 09:00 AM   #23
Obstreperous Rex
 
Join Date: Jan 2001
Location: San Marcos, TX
Posts: 26,900
Images: 513
Thanks for that link, Toke. Much appreciated,
__________________
CH

Search DV Info Net | DV Info Net Sponsors | A Decade (+5) of DVi | ...Tuesday is Soylent Green Day!
Chris Hurd 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 03:38 PM.


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