I know this is a kind of hotly debated topic and I certainly don't mean to open up the proverbial FX vs DX can of worms however I wanted to share some of my thoughts and pose some questions here to the forum members in regards specifically to image quality comparisons between cameras of the two different sensor types.
For what it's worth, I am a former D700 owner and shoot with a D7100 now while I await to buy a D750. I do shoot some product photographer so pixel peeping is, on occasion, a kind of job requirement for me.
With that said, it is a known "fact" that the following exists:
• FX Sensors have a typical 1-stop (+/-) advantage in low light sensitive range (ISO)
• FX Sensors have a typical 1-stop (+/-) advantage in dynamic range (this one is more dependent on generation of sensors being produced, but generally speaking FX has better DR than DX)
• FX Sensors, when making sure all other aspects are equalized, has a shallower depth of field. This could be a benefit or a downside depending on your perspective and what you're trying to accomplish.
Let's not argue those points as they are certainly "generally" true at the least.
What I want to inquire as to true image quality comparisons. By image quality I am referring to pixel clarity, micro-contrast, etc. It would seem to me that all things being very equal, that the larger sensor with the larger pixel photo sites should actually do a better job rendering and capturing an image. This would be better edge detail, better micro contrast, certainly less noise at even base ISO, etc.
I ask this question because I know of members here and around who have said repeatedly they can tell very easily when opening up a RAW image produced on a DX or smaller sensor versus one that was made on a FF sensor or larger.
Can you chime in if you believe this is true or false? Subjective opinion is fine, but has anybody made a real attempt to ascertain if this is in fact true or false? Again, forget the low light, DR, and shallow DOF benefits, I'm strictly looking at a IQ comparison between sensors. Also please bear in mind I am truly speaking to a pixel level of detail here. I realize 100000% that regardless when the output destination is a low rez .jpg on a website or a small print, etc whatever benefits there either are or aren't would be completely neutralized.