1. using FX lenses does not produce better viewfinder presentation which was the discussion please actually read and understand what you are talking about if you want to join the discussion.
2. This is COMPLETELY un true using DX on a FF camera crops down on the amount of sensor space used... which removes image quality through pixels. Shooting a crop lens on an full frame will drop half the resolution from the sensor.
2a. its called circle of illumination, atleast where I live, and the dx is not capable of higher resolution because the optics arent anywhere near low enough quality to limit resolution. 500% crop an image and you will see pixel no matter what lens you use, so the resolution isnt being altered other than the fact that dx has a smaller circle of illumination and thus causes you to loose pixels on a full frame. Which is the opposite of your statement.
Use compatible equip.. thats why they make it.
OH and btw Im not going to post my CV on here simply because I dont feel like linking my professional career with a hobby I was simply offering to help people, who I realize photography is a hobby full of people who know everything. Also experience in a professional setting is everything.. I think that is what you meant to say, my mother has been taking pictures since the 50's and I dont think I would consider her capable of teaching photography haha.
and please teach me something and I will gladly accept the knowledge but frankly I would rather pick the brains of my old professors who have been professionals for 30 years and not random internet trained photographers. Having read the incorrect data you've already posted I will go ahead and keep with my sources.
On a side note you should actually use cameras your going to compare. I have used the M-8 M-9 and fuji xpro-1 and the difference is indistinguishable in quality. If you looked at an image from both I seriously doubt you would have any idea which is which.
A DX will perform the same whether on FX or DX body just as the FF sensor will. FOV will change and yes you will lose pixels but the quality of both cam and lens remains the same( not at full resolution os course). If you're posting to FB or makining a 4x6 can you see the difference. Is there an apparent quality loss? Semantics. On D800 you still have almost 16 MP. How many do you need? I can still create whether on a DX or FX.
I get the feeling you're under the thought that a better camera makes a better photo. One old timer gave me the advice years ago that the best camera is the one you have with you.
Did you know that everything a digital photographer need to obtain perfect exposure is his or her camera? It has everything you need to get perfectly exposed digital files with no overexposure. But you have to use the LCD of the camera. From what you imply you don't even use the LCD to check exposure and comp? anyone using digital would be crazy not to take advantage of it.
Talk to your instructors about the Circle of Confusion. There's more to it than illumination.
I have used the Leicas and the Fujis. I shot both of them side by side and looked at each file. The Leica has few rivals. It will edge the Fuji out with its detail and sharpness. Much like real sharpness from film. The Fuji is close but displays what I will refer to as digital sharpness. For someone soo concerned with the quality of their camera and optics I'm surprised you haven't recognized the differences the two camera systems exhibit. I think it's cool you want to help peeps but I think you go about it all wrong. You assume too much and your ego does all the talking.