>>3294536I'll say it again, misfocus is only one of the reason consumer flatbeds have low resolution.
Even if focus is perfect, the *optical path* simply cannot reach that resolution. Imagine if you put plastic (or very simple 2-element glass) lens in front of a 24MP camera. The sensor has 24MP, and you'll get a 24MP file, but without real detail because it isn't resolved by the lens.
Scanners are like that, with a lens system and a sensor which consists of an RGB *strip* (and not a rectangle like in cameras), that is moved in very small steps across the frame.
Consumer flatbeds simply don't have a lens good enough to resolve the theoretical dpi, and the motor moving the sensor strip is not smooth and small stepped enough to achieve the theoretical dpi. That's all there is to it.
There's a website that tests the real resolution of various scanners:
http://filmscanner.info/en/FilmscannerTestberichte.htmlThis website (or similar ones testing real world resolution) should be your only criterion when buying a film scanner, you can completely disregard the advertised theoretical resolution.
In your case for instance (V600), the real resolution is around 1500dpi, which gives a 3.5megapixel file with real detail. Anything above that, is scanning blur.