Archived posting to the Leica Users Group, 2010/02/24

[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]

Subject: [Leica] Shoot your Leica R glass with a mirrorless SAMSUNG¹S NX
From: Frank.Dernie at btinternet.com (Frank Dernie)
Date: Wed, 24 Feb 2010 19:50:12 +0000
References: <C7AAE2FF.5E0CF%mark@rabinergroup.com>

Half frame is indeed full frame cut in half, which exactly halves the area 
so what George wrote is spot on.
You need to work on your mathematics :-)
APS is -less- than half-frame, but 4/3 is bigger than quarter frame because 
it has a different aspect ratio.
4/3 is much more than half of APS.

Cropped frame Canon is about 1/2.56 frame, or 0.39 of a 35mm frame (much 
less than half)
Cropped frame Nikon is about 1/2.25 frame, or 0.44 of a 35mm frame (a fair 
bit less than half)
4/3 is about 1/3.5 frame, or 0.28 of a frame, pretty small but not much 
smaller than a Canon "APS" sensor. (why have we developed the tendency to 
call these APS sensors when they are not APS sized, I wonder)

Frank

On 24 Feb, 2010, at 19:06, Mark Rabiner wrote:

>> for whatever it's worth
>> 355.5 sq mm cut in half = 177.75 sq mm (not 243 sq mm)
> 
> 
> George half frame is descried as full frame cut in half.
> Full frame is 24x36. Half frame is 18x24.
> If you took scissors. Cut it in half. You'd have half frame.
> Very close to the situation between APS-C and 4/3's
> 
> 
> [Rabs]
> Mark William Rabiner
> 
> 
> 
> 
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information



Replies: Reply from mark at rabinergroup.com (Mark Rabiner) ([Leica] Shoot your Leica R glass with a mirrorless SAMSUNG¹S NX)
In reply to: Message from mark at rabinergroup.com (Mark Rabiner) ([Leica] Shoot your Leica R glass with a mirrorless SAMSUNG¹S NX)