[Leica] Companion to the M9?

[mark at rabinergroup.com (Mark Rabiner)]

When they say inch with sensors they are talking about a tube which used to
surround it from the old black and white video in the TV station days. The
sensor is much smaller and needs to be looked up to find out how small.

- - from my iRabs.
Mark Rabiner
http://gallery.leica-users.org/v/lugalrabs/


> From: Phil Swango <pswango at att.net>
> Reply-To: Leica Users Group <lug at leica-users.org>
> Date: Thu, 12 Jul 2012 21:41:13 -0600
> To: Leica Users Group <lug at leica-users.org>
> Subject: [Leica] Companion to the M9?
> 
> Richard, the link says the sensor size (diag.) is 1 inch (24.5mm).  How is
> that possible when the M4/3 diagonal is only 22.5mm?  They must be using
> the old terminology, so it could also be called a 3/3 sensor, as compared
> to 4/3.  Confusing.
> 
>> From wikipedia on MFT:
> "The image sensor of Four Thirds and MFT is commonly referred to as a *4/3"
> type* or *4/3 type* sensor (inch-based sizing system is derived from now
> obsolete video camera tubes 
> <http://en.wikipedia.org/wiki/Video_camera_tube>).
> The sensor measures 18 mm ? 13.5 mm (22.5 mm diagonal), with an imaging
> area of 17.3 mm ? 13.0 mm (21.6 mm diagonal), comparable to the frame size
> of 110 film 
> <http://en.wikipedia.org/wiki/110_film>.[3]<http://en.wikipedia.org/wiki/Micro
> _Four_Thirds_system#cite_note-Olympus-Europe_4.2F3-2>
> Its
> area, ca. 220 mm?, is approximately 40% less than the
> APS-C<http://en.wikipedia.org/wiki/APS-C> sensors
> used in other manufacturers' DSLRs <http://en.wikipedia.org/wiki/DSLR>, yet
> is around 9 times larger than the 1/2.5" sensors typically used in compact
> digital cameras <http://en.wikipedia.org/wiki/Compact_digital_camera>. "
> 
> -- 
> Phil Swango
> 307 Aliso Dr SE
> Albuquerque, NM 87108
> 505-262-4085
> 
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