I wasn't mad about that, what do you say about someone who obviously believes that Hitler is still alive and living in Argentina., Well he never said that in so many words, but the conspiracy theory required to make ISO 100 be "different" for every sensor size, also implies a belief in lots of other things that range from the improbable to the impossible.

On 5/26/2015 6:39 PM, Igor PDML-StR wrote:

I am surprised that everybody is mad about the DOF part, but nobody is surprised by this nonsense:

"Here is a fun fact: the lens set to f/2 on every sensor will result in the same shutter speed for the same exposure. This is because the sensors have different signal multipliers, meaning that 100 ISO is not really 100 - it is actually multiplied, and you simply don't see that."

While all the equivalence discussion is such a mess (it can be confusing), and this guys is totally confused, in this statemenet, he defies the laws of optics, including the definition of aperture and it's relation to the amount of light coming through the lens.

James: the simple response is: do not read what's written on the public restroom's walls.

Igor



On 26/05/2015 4:34 AM, james wrote:

While reading the photography part on flipboard (Smart phone app) A guy
    named Dzvonko Petrovski is talking about crop v full frame sensors.


    Edited quote:
    A 50mm F2 lens on full frame is as expected a 50mm F2. On a 1.5 crop
    sensor, it is a 75mm F3.

    Link here:
    http://www.lightstalking.com/?s=camera+sensor+size


    Huh???????? A lens gets darker on a crop sensor????


    James





--
I don't want to achieve immortality through my work; I want to achieve 
immortality through not dying.
-- Woody Allen


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