Focal Length Equivalents on the EX Series Cams at DVinfo.net

Go Back   DV Info Net > Sony XAVC / XDCAM / NXCAM / AVCHD / HDV / DV Camera Systems > Sony Digital Cinema Camera Systems > Sony XDCAM PMW-F3 CineAlta

Sony XDCAM PMW-F3 CineAlta
HD recording with a Super35 CMOS Sensor.


Reply
 
Thread Tools Search this Thread
Old March 21st, 2011, 12:14 PM   #1
Major Player
 
Join Date: Sep 2008
Location: Vancouver, Canada
Posts: 975
Focal Length Equivalents on the EX Series Cams

A question for those of you that have an EX Camera and an F3. What are the focal length equivalents on the zoom scale for the relatively standard focal lengths on cine lenses on the F3?

I am thinking about focal length equivalents for not only the 3 lengths that Sony has deemed essential but a broader range like:

18mm
21mm
25mm
35mm
50mm
85mm
105mm
135mm
150mm

Thanks!
Andrew Stone is offline   Reply With Quote
Old March 21st, 2011, 02:01 PM   #2
Wrangler
 
Join Date: Oct 2002
Location: Los Angeles, CA
Posts: 2,100
Re: Focal Length Equivalents on the EX Series Cams

Quote:
Originally Posted by Andrew Stone View Post
A question for those of you that have an EX Camera and an F3. What are the focal length equivalents on the zoom scale for the relatively standard focal lengths on cine lenses on the F3?
According to the Abel FOV calculator, 1/2" multiplication factor is .3x

18mm 66.5 FOV equivalent is 5.3mm on the EX1/3, and so on (multiply the S35 lens by .3)
__________________
My Work: nateweaver.net
Nate Weaver is offline   Reply With Quote
Old March 21st, 2011, 10:24 PM   #3
Major Player
 
Join Date: Sep 2008
Location: Vancouver, Canada
Posts: 975
Re: Focal Length Equivalents on the EX Series Cams

Thanks Nate for the reply. Familiar with Abel Cine Tech's FOV calculator. I was hoping a camera operator with an EX3 or similar camera who now owns an F3 had gone through the exercise of jotting down the "Z" reading from the viewfinder for comparable FOVs on the F3. If you have an EX and an F3, it would be a natural thing to do.
Andrew Stone is offline   Reply With Quote
Old May 26th, 2011, 07:08 AM   #4
Regular Crew
 
Join Date: May 2008
Location: Sydney, Australia
Posts: 47
Re: Focal Length Equivalents on the EX Series Cams

Andrew, if you go to EX1 manual at back in Specifications it rates the lens size in the equivalent 35mm - so EX1 is "(equivalent to 31.4 mm to 439 mm on 35 mm lens)". Then use the FOV calculator.
Michael Power is offline   Reply With Quote
Old May 26th, 2011, 11:57 AM   #5
Inner Circle
 
Join Date: Aug 2006
Location: Efland NC, USA
Posts: 2,315
Re: Focal Length Equivalents on the EX Series Cams

Attached is a spreadsheet that should give you a reasonable approximation of the zoom % in an EX1 for the lenses on your list.

For the lenses on the wide end you will need the Sony 0.8 wide angle adapter.
Attached Files
File Type: xls Ex1ToF3FOV.xls (14.5 KB, 151 views)
__________________
http://www.LandYachtMedia.com
Chris Medico is offline   Reply With Quote
Old May 26th, 2011, 12:53 PM   #6
Wrangler
 
Join Date: Oct 2002
Location: Los Angeles, CA
Posts: 2,100
Re: Focal Length Equivalents on the EX Series Cams

Quote:
Originally Posted by Michael Power View Post
Andrew, if you go to EX1 manual at back in Specifications it rates the lens size in the equivalent 35mm - so EX1 is "(equivalent to 31.4 mm to 439 mm on 35 mm lens)". Then use the FOV calculator.
Just a heads up though, In that context and given the history of the use of 35mm equivalents in manus materials, I'd think they're talking about full frame 35mm, which is larger than a super 35 sensor.
__________________
My Work: nateweaver.net
Nate Weaver is offline   Reply With Quote
Old May 26th, 2011, 12:55 PM   #7
Inner Circle
 
Join Date: Aug 2006
Location: Efland NC, USA
Posts: 2,315
Re: Focal Length Equivalents on the EX Series Cams

FYI:

I used a S35 multiplication factor in the spreadsheet above. It correlated with the FOV calculator on the Abelcine website.
__________________
http://www.LandYachtMedia.com
Chris Medico is offline   Reply With Quote
Old May 26th, 2011, 06:01 PM   #8
Vortex Media
 
Join Date: Jan 2009
Location: New England, USA
Posts: 2,484
Re: Focal Length Equivalents on the EX Series Cams

Quote:
Originally Posted by Andrew Stone View Post
I was hoping a camera operator with an EX3 or similar camera who now owns an F3 had gone through the exercise of jotting down the "Z" reading from the viewfinder for comparable FOVs on the F3. If you have an EX and an F3, it would be a natural thing to do.
There is no "Z" reading in the viewfinder in an F3 yet. That's because there are no compatible zoom lenses to transmit that information (there will be in the future) -- and the prime lenses don't supply that info to the camera.

Also, even if they did, a "Z" number on one camera will have absolutely no correlation with the number on another camera or lens of different focal length. The "Z" numbers are just a percentage, so they have no absolute meaning.
__________________
Vortex Media http://www.vortexmedia.com/
Sony FS7, F55, and XDCAM training videos, field guides, and other production tools
Doug Jensen is offline   Reply With Quote
Old May 27th, 2011, 12:03 AM   #9
Major Player
 
Join Date: Sep 2008
Location: Vancouver, Canada
Posts: 975
Re: Focal Length Equivalents on the EX Series Cams

Z reading in the EX cams Doug, not the F3 and yes there is no absolute equivalent but there is a relative or approximate equivalent.

I set up my EX3 and F3 a while ago and jotted down the relative equivalents.

Once I find the sheet of paper I will post the results. I haven't looked at Chris's spreadsheet yet. Thanks for doing that Chris.
Andrew Stone is offline   Reply With Quote
Old May 27th, 2011, 05:18 AM   #10
Inner Circle
 
Join Date: Aug 2006
Location: Efland NC, USA
Posts: 2,315
Re: Focal Length Equivalents on the EX Series Cams

I took a look at the EX1 last night and the zoom isn't linear so the spreadsheet won't be as accurate as I would like. :(
__________________
http://www.LandYachtMedia.com
Chris Medico is offline   Reply With Quote
Old May 27th, 2011, 07:41 AM   #11
Vortex Media
 
Join Date: Jan 2009
Location: New England, USA
Posts: 2,484
Re: Focal Length Equivalents on the EX Series Cams

Quote:
Originally Posted by Andrew Stone View Post
I set up my EX3 and F3 a while ago and jotted down the relative equivalents. .
I guess I missed something, because it sounded like in your other posts that you didn't have both cameras and had the ability to do the comparisons for yourself.
__________________
Vortex Media http://www.vortexmedia.com/
Sony FS7, F55, and XDCAM training videos, field guides, and other production tools
Doug Jensen 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 Digital Cinema Camera Systems > Sony XDCAM PMW-F3 CineAlta

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 01:48 PM.


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