Hi, we have a different opinion between my brother and me about a so basic and at once vital conception like resolution. I hope a enquiry about it be appropriate in this forum. I put below the two versions and I would be grateful for any help in order to determine which is the right one. Thank you very much indeed in advance.

Version 1:

1.a. The image size professionally is, in both analog and digital, measured in metric units (centimeters and its multiples or inches). And the resolution is always measured in pixels/metric unit. The result of this two variables (which is a specific amount of pixels) is, in general conceps in digital photography, only the resulting amount of pixels, only that. Finding a reason for what in some digital cameras is erroneously spoken about