Originally posted by biz-engineer People claiming there's not difference in FF are doing so because their main activity is to low at image on LCD displays which at best are 8bits 2000 pixels wide, end of discussion.
They may just not shoot at 3200 isos or 6400 isos all the time. FF is better but this is a bit better, not that much better. As you explained, you need cropped MF or better full frame MF to get to the next level. or even bigger. It is easier done in film than digital, but you people use much bigger size than FF.
FF and APSC are just too format that are quite similar. In some case like some intermediate iso settings like 1600-3200 it make a difference the FF still great, the APSC start to show its limitations but that's it.
Originally posted by biz-engineer The fastest 645 lenses at f2.8, most being f3.5 or f4 wide open, this does not prevent 645 images to a visible step above apsc or FF. In an photo gallery, 645 images are just stunning, you would definitely tell which one is from apsc and which one is from 645.
What people often associate with quite high end gear may not come in practice from the sensor but from what the photographer was able to get out of the whole chain. Including great lighting equipment and lighting conditions, perfect and good taste for the post processing. Some picture I see and think... Wow that incredible... and after you understand it come from a simple APSC, maybe even a basic one like a K20, but the photographer is somebody that know his craft. On the opposite there millions of meh FF pictures. The thing is there almost no newbie that has an MF, already many on FF, and on APSC, there all level and most beginers that are serious about it start here.
I agree on some circonstances there a difference, but it is not always, and it not just the LCD. Ultimately, if you picture are truely stuning, you don't need A0 print with a magnifying glass to discover. You'll find it stuning on a LCD screen, printed on a book and at various size. Indeed the actual size and display medium may not be that important.
All of this notion that you need huge resolution, huge SR number at very high iso is nice to push sales, but this is not really how you get great photos anyway.
If your photo isn't stunning already at 2MB (so 2000 pixel wide), there no point to zoom more or look at what it would be at 16, 24 or 36MP, it will not improve.