Archived posting to the Leica Users Group, 2010/03/26

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Subject: [Leica] Samsung NX10
From: mark at rabinergroup.com (Mark Rabiner)
Date: Fri, 26 Mar 2010 04:30:46 -0400

> It's a little weird -- and a strong orthodoxy in the digital photo world
> akin to eggs coming in three sizes the smallest being "Large" -- that he
> says the APS-C sized sensor has "50 percent more area" than the mFT sensor.
> In fact it has double the "area."  The area of a full frame (approx 36mm by
> 24mm) is 864 sq mm; the area of an APS-C sized sensor, approx 18 by 24,is
> half the other at 432 sq mm; and the so called 2X sensor at roughly 12 X 18
> is half again, at 216 sq mm -- one quarter the area of the full frame.  The
> designation of 1.5 and 2 have to do with crop sizes not area of sensor. And
> even if you go by the 1, 1.5, and 2 designations, then you'd say that the
> APS-C offers a third larger crop than the mFT -- the half unit being a 
> third
> of the 1.5...
> 
> In retail if they buy at $12 and charge you $24 that's a "50 percent"
> markup. We see/hear this and we think: you're lying. It's an industry
> standard lie: only half of the retail price is profit, see, so it's a 50
> percent markup. That's what Pogue is doing here but it's deceptive in terms
> of people understanding what these things really are.
> 
> Why why why? Why David must everything be hyped as more than it is?  I love
> my G1 but I know how small the sensor is and I'm living with the pain man.
> It's like the woman who falls in love with and marries the guy with the --
> never mind. Love is strange. Or as St. Jerome said: "Love knows nothing of
> order."  Needless to say he was in a bit of hot water at the time.
> 
> V
> 
You should check out filter factors they're worse.
It logarithms. They didn't let me take trig so I cant speak for it.
But they have big books filter with special numbers.
ND0.3 filter is one stop (2X filter factor), ND0.6 is two stops (4X filter
factor)


[Rabs]
Mark William Rabiner





In reply to: Message from passaro.vince at gmail.com (Vince Passaro) ([Leica] Samsung NX10)