CCD sizes - what is 1\4.7 at DVinfo.net

Go Back   DV Info Net > Sony XAVC / XDCAM / NXCAM / AVCHD / HDV / DV Camera Systems > Sony HDV and DV Camera Systems > Sony TRV950 / PDX10 Companion

Sony TRV950 / PDX10 Companion
...plus TRV900, PD100A and other Sony DV camcorders.


Reply
 
Thread Tools Search this Thread
Old September 23rd, 2004, 10:28 AM   #1
Regular Crew
 
Join Date: Sep 2004
Location: Cincinnati Ohio
Posts: 79
CCD sizes - what is 1\4.7

Looking at the info on the ccd of the TRV950. I understand that a bigger ccd is better so 1\3 is better than 1\4 ect.
But is 1\4.7 closer to 1\3 or 1\5.
Excuse my asking but math was never my strong point
Samuel Birkan is offline   Reply With Quote
Old September 23rd, 2004, 11:25 AM   #2
Wrangler
 
Join Date: Dec 2002
Location: Mays Landing, NJ
Posts: 11,542
Hey, you got your backslash and forward slash confused... you must be a DOS user! ;-)

Seriously, 1/4.7" is sort of meaningless except as a basis for comparison. Like all fractions, as the number on the bottom gets larger, the measurement is smaller. So 1/4.7 is smaller than 1/4 but larger than 1/5. I agree it's confusing. The following article refers to digital still cameras, but may help explain a little: http://www.dpreview.com/news/0210/02...ensorsizes.asp

That table doesn't list some of the smaller ccd sizes. As a point of reference, the actual size (diagonal measurement) of the PDX-10/TRV-950 1/4.7" CCD's is 3.8 mm. A 1/4" CCD is 4mm and a 1/3" CCD is 6mm. So as you can see, a 1/3" CCD is significantly larger than what we have in our TRV-950's and PDX-10's...
Boyd Ostroff is offline   Reply With Quote
Old September 28th, 2004, 11:47 AM   #3
Inner Circle
 
Join Date: Mar 2003
Location: Billericay, England UK
Posts: 4,711
Because the diagonal of the 35mm frame is 43mm, you can take that as its 'normal' lens. The diagonal of a 1/4" chip is 4.1mm and for a 1/3" chip is 5.5mm, so their 'standard lenses' should be those focal lengths. The 1/3" chip is actually 4.4mm x 3.3mm, so 1/3" doesn't really feature there much at all.

tom.
Tom Hardwick 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 > Sony XAVC / XDCAM / NXCAM / AVCHD / HDV / DV Camera Systems > Sony HDV and DV Camera Systems > Sony TRV950 / PDX10 Companion

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 01:11 AM.


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