Is the wide angle lens really worth it? - Page 2 at DVinfo.net
DV Info Net

Go Back   DV Info Net > JVC ProHD & MPEG2 Camera Systems > JVC GY-HD Series Camera Systems

JVC GY-HD Series Camera Systems
GY-HD 100 & 200 series ProHD HDV camcorders & decks.

Reply
 
Thread Tools Search this Thread
Old August 22nd, 2006, 08:22 AM   #16
Inner Circle
 
Join Date: Feb 2006
Location: Belfast, UK
Posts: 6,152
Quote:
Originally Posted by Stephen L. Noe
The WA adapter falls far short of the 13x lens. 58 degrees compared to 70 degrees respectively. The 13x lens is very very wide. This (I think) is the primary reason it is so much more expensive than the others. At the widest part of the lens the image holds true on the edges with no real ill effect. The 13x lens is definately worth the extra bread if you need wide shots (just about anybody).
The 13 x 3.5mm has same angle of view as a 6.42mm lens on a 2/3" CCD camera. It's not as wide as the current crop of 2/3" CCD W/A lenses (4.7mm at the wide end), but it has the angle of views you commonly tend to use on these lenses.

The stock 16 x 5.5 has the same angle as a 10mm on 2/3". The standard 2/3" zooms tend to be 8mm at the widest. Of course, the angle of view at the min distance on both the stock JVC lens and the standard zooms is reduced due to the breathing effect when focusing.

The much reduced breathing on the W/A lenses then become a major advantage, because you're not losing around 10 degrees on your angle of view (as happens on the standard zooms) when you focus at the min distance on the wide end of the zoom.
Brian Drysdale is offline   Reply With Quote
Old August 22nd, 2006, 09:22 AM   #17
Major Player
 
Join Date: Jul 2003
Location: Warren, NJ
Posts: 398
Quote:
Originally Posted by Stephen L. Noe
The WA adapter falls far short of the 13x lens. 58 degrees compared to 70 degrees respectively. The 13x lens is very very wide. This (I think) is the primary reason it is so much more expensive than the others. At the widest part of the lens the image holds true on the edges with no real ill effect. The 13x lens is definately worth the extra bread if you need wide shots (just about anybody).
That would have been the 18x4.2mm lens with a .8x WA adapter. With the standard 16x5.5 it would have been much narrower, as you indicated.
David Ziegelheim is offline   Reply With Quote
Old August 22nd, 2006, 10:09 AM   #18
Trustee
 
Join Date: Apr 2005
Location: Chicago
Posts: 1,214
The Shooting angle calculation table can assist you with figuring it all out.
Stephen L. Noe is offline   Reply With Quote
Old August 22nd, 2006, 11:01 AM   #19
Major Player
 
Join Date: Jul 2003
Location: Warren, NJ
Posts: 398
Thanks...I was missing the sensor size. At 3.5mm, isn't there some barreling?
David Ziegelheim is offline   Reply With Quote
Old August 22nd, 2006, 01:25 PM   #20
Obstreperous Rex
 
Join Date: Jan 2001
Location: San Marcos, TX
Posts: 27,368
Images: 513
No, there is no "barrel" effect with the 13x3.5 at full wide.
__________________
CH

Search DV Info Net | 20 years 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...

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

Scan Computers Int. Ltd.
+44 0871-472-4747
Bolton, Lancashire UK


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 > JVC ProHD & MPEG2 Camera Systems > JVC GY-HD Series Camera Systems

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



All times are GMT -6. The time now is 08:15 AM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2024 The Digital Video Information Network