Pro Photo HOME
Go Back   Pro Photo HOME > Professional Digital Camera Discussion - Full Access for Basic Members > Canon EOS Digital SLR with 1.6X sensors

Notices

Reply
 
LinkBack (9) Thread Tools Display Modes
  9 links from elsewhere to this Post. Click to view. #1  
Old 08-20-2004, 07:35 PM
Doug_Kerr's Avatar
Doug_Kerr Doug_Kerr is offline
Premium Lifetime Member
 
Join Date: Oct 2003
Location: Weatherford, Texas
Posts: 2,471
Doug_Kerr
APS-H sensor size?

One of the most intriguing facts in the Canon news release on the new Canon 580EX flash unit is that it provides for the zoom head to take account of the sensor size (and thus the field of view implications of any reported focal length) by way of receiving from the camera (1D MkII or 20D) sensor size information, with three choices mentioned: full-frame (presumably meaning full-frame 35 mm), APS-C (the common description of the sensor size used in the EOS 10D and 300D), and APS-H. It is the latter that is the most intriguing.

In the actual APS system, APS-H refers to the actual camera frame size, 30.2 x 16.7 mm. (It is actually one of three "crops" of the full APS frame in which APS prints can be ordered, this one the "non-crop"). It is intended to somewhat emulate the aspect ratio of HDTV (thus the "H" moniker). (The APS-H crop has an aspect ratio of 1.81:1, whereas HDTV has an aspect ratio of 1.78:1.)

Could this mean that Canon has in mind a sensor of this size in some future camera (or an in-camera crop of this size from a full-frame 35 mm sensor)?

Or is this just Canon's peculiar folksy way of describing the 1D MkII sensor size (the so-called factor 1.3 size, 28.7 x 19.1 mm), not otherwise mentioned as one of the choices. It sure takes a lot of "literary license" to plant the name "APS-H" on that size!

Interesting.

Best regards,

Doug




Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #2  
Old 08-20-2004, 09:56 PM
Noel_Carboni's Avatar
Noel_Carboni Noel_Carboni is offline
Premium Lifetime Member
 
Join Date: Feb 2001
Location: Florida, USA
Posts: 5,475
Noel_Carboni
Re: APS-H sensor size?

Here's a little bit of insight, from Chuck Westfall:

http://www.robgalbraith.com/ubbthrea...=168076#167890

The pertinent quote from that post:

[ QUOTE ]
Canon's digital SLR design philosophy is to provide a range of camera models to cover clearly defined market segments. For the foreseeable future, this is going to involve a range of sensor sizes from APS-C (as in EOS Digital Rebel and 10D) through APS-H (as in EOS-1D) to full-frame (as in EOS-1Ds).

[/ QUOTE ]

-Noel

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #3  
Old 08-21-2004, 12:25 AM
Doug_Kerr's Avatar
Doug_Kerr Doug_Kerr is offline
Premium Lifetime Member
 
Join Date: Oct 2003
Location: Weatherford, Texas
Posts: 2,471
Doug_Kerr
Re: APS-H sensor size?

Hi, Noel,

Yeah, that's what I thought. Thanks.

It's sure a dumb description of that sensor size and shape!

"APS-C" is at least something like the 10D/300D sensor size.

Best regards,

Doug

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #4  
Old 09-02-2004, 12:44 PM
AlanRew AlanRew is offline
Basic Member
 
Join Date: Aug 2002
Location: Oxfordshire, UK
Posts: 256
AlanRew 10
Re: APS-H sensor size?

It may be too early to ask this question..

Will those of us who own a 10D (rather than a 20D) have a way to force the 580EX to use the correct equivalent (i.e. 1.6x) focal length value?

e.g. could I manually dial in the (focal length x 1.6) value rather than letting the flash use the original focal length?

If not, this seems like an annoying (lack of a) feature for 10D owners.

TIA

Alan

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #5  
Old 09-02-2004, 01:46 PM
Jonathan_Wienke Jonathan_Wienke is offline
Premium Lifetime Member
 
Join Date: Jul 2003
Location: Vacaville, California
Posts: 2,562
Jonathan_Wienke 10
Re: APS-H sensor size?

You can manually set the flash zoom on the 550EX, so I see no reason why you couldn't with the 580EX.

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #6  
Old 09-02-2004, 05:54 PM
Doug_Kerr's Avatar
Doug_Kerr Doug_Kerr is offline
Premium Lifetime Member
 
Join Date: Oct 2003
Location: Weatherford, Texas
Posts: 2,471
Doug_Kerr
Re: APS-H sensor size?

Alan,

Do we know for sure that the 580EX won't make the proper adjustment on a 10D? Probably not, as the 10D will likely not give the sensor size infroamtion to the flash.

I have always been surprised that the 10D and 300D don't just pass "35-mm equivalent" focal length information to the flash anyway! I don't know any reason the flash needs the "actual" focal length.

If the 20D did that, then we would get correct zoomage with any autozoom EX flash.

But I guess Canon has something more subtle up their sleeve!

Best regards,

Doug

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #7  
Old 09-02-2004, 09:38 PM
Gabriel_Aguirre Gabriel_Aguirre is offline
Basic Member
 
Join Date: Jun 2003
Location: Minnesota, USA
Posts: 271
Gabriel_Aguirre 10
Re: APS-H sensor size?

[ QUOTE ]
I have always been surprised that the 10D and 300D don't just pass "35-mm equivalent" focal length information to the flash anyway!

[/ QUOTE ]

I can set my Metz 54 MZ-4 to compensate the zoom of the flash to the condescension of the APS-C format. When it reads the focal length from the 10D, it compensates for the 1.6x factor; much, much better than having to do this manually every single time you need every quantum at your disposal with the 550 EX.

I believe the 580EX will have the ability for you to do the same as is currently possible with Metz's 54 flashes.

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On


LinkBacks (?)
LinkBack to this Thread: http://www.prophotohome.com/forum/canon-eos-digital-slr-1-6x-sensors/42658-aps-h-sensor-size.html
Posted By For Type Date
APS-H Klarstellungen und ein Kommentar: Pentax SLR Talk Forum: Digital Photography Review This thread Refback 01-27-2013 08:52 AM
Mind your hiking gear! This thread Trackback 02-03-2011 06:38 AM
Subscribe/Unsubscribe/Change Options This thread Refback 10-06-2009 09:55 PM
Aps-h on Kosmix : Reference, Videos, Images, News, Shopping and more... This thread Refback 07-26-2009 12:43 PM
aps-h | VIRGILIO Ricerca | Web This thread Refback 12-19-2008 01:07 PM
APS-H clarifications and a comment: News Discussion Forum: Digital Photography Review This thread Refback 11-10-2008 08:02 AM
rumor of new cameras and lens for pentax [Page 2]: Pentax SLR Talk Forum: Digital Photography Review This thread Refback 11-02-2008 11:41 AM
rumor of new cameras and lens for pentax [Page 2]: Pentax SLR Talk Forum: Digital Photography Review This thread Refback 11-02-2008 08:56 AM
APS-H clarifications and a comment: Pentax SLR Talk Forum: Digital Photography Review This thread Refback 11-02-2008 08:26 AM


All times are GMT -4. The time now is 03:00 AM.


Advertise Here! - Contact Us!


Content Relevant URLs by vBSEO 3.1.0