Archived posting to the Leica Users Group, 2012/07/12

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Subject: [Leica] Companion to the M9?
From: john at mcmaster.co.nz (John McMaster)
Date: Fri, 13 Jul 2012 04:54:21 +0000
References: <80F9701439F20347874CE5E4E03C22E9879D9B60@WhizzMAIL01.whizz.org>, <CC2521E7.21092%mark@rabinergroup.com>

An about face ;-)

John

On 13/07/2012, at 4:51 PM, "Mark Rabiner" <mark at rabinergroup.com> wrote:

> I like the look of that camera!!!
> 
> - - from my iRabs.
> Mark Rabiner
> http://gallery.leica-users.org/v/lugalrabs/
> 
> 
>> From: John McMaster <john at mcmaster.co.nz>
>> Reply-To: Leica Users Group <lug at leica-users.org>
>> Date: Fri, 13 Jul 2012 03:58:30 +0000
>> To: Leica Users Group <lug at leica-users.org>
>> Subject: Re: [Leica] Companion to the M9?
>> 
>> http://www.dpreview.com/previews/sony-dsc-rx100/ shows size in relation to
>> other crop-circle sensors
>> 
>> john
>> ________________________________________
>> 
>> 
>> 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/
>> 
>> 
>>> 
>>> 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/Micr>>
> o
>>> _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
>> 
>> _______________________________________________
>> Leica Users Group.
>> See http://leica-users.org/mailman/listinfo/lug for more information
> 
> 
> 
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information
> 
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In reply to: Message from john at mcmaster.co.nz (John McMaster) ([Leica] Companion to the M9?)
Message from mark at rabinergroup.com (Mark Rabiner) ([Leica] Companion to the M9?)