03-13-2011, 08:33 AM
[quote name='IanCD' timestamp='1299952802' post='6697']
So, I was trying to get a feel for a potential 'cutoff' point on the D7000 (given Markus's point)... and also trying to understand a bit better the relationship between lens and sensor resolution, sensor size, the 'sweet spot' effect of using FF lenses on DX sensors... and other factors that impact... for my crash course in this field..!
Ian
[/quote]
Regarding the resolution of lenses vs. sensors (APS-C or FF), you can stick to the statement that the resolution of the system is limited by the sensor not by the lens. Of course (at least in theory) there can be exceptions but very rarely:
A tack-sharp lens with 200lp/mm resolution (24mm) mounted on a D700 will give more system resolution than D3x and a 80lp/mm lens combo (if we simply ignore the AA filter and NEF handling differences). But frankly, I think this D3x and 80lp/mm lens combo is not realistic at all.
If you have a DX body and you think that you will possibly upgrade to FX in someday, then better collect FF compatible lenses. Yes they might be heavier/bulkier than DX versions but among other arguable advantages, at least one thing is for sure that you almost get no visible vignetting/light falloff (the image circles of FX lenses are larger than the DX sensor requires). And of course, it's a good investment for the future FX body.
Serkan
So, I was trying to get a feel for a potential 'cutoff' point on the D7000 (given Markus's point)... and also trying to understand a bit better the relationship between lens and sensor resolution, sensor size, the 'sweet spot' effect of using FF lenses on DX sensors... and other factors that impact... for my crash course in this field..!
Ian
[/quote]
Regarding the resolution of lenses vs. sensors (APS-C or FF), you can stick to the statement that the resolution of the system is limited by the sensor not by the lens. Of course (at least in theory) there can be exceptions but very rarely:
A tack-sharp lens with 200lp/mm resolution (24mm) mounted on a D700 will give more system resolution than D3x and a 80lp/mm lens combo (if we simply ignore the AA filter and NEF handling differences). But frankly, I think this D3x and 80lp/mm lens combo is not realistic at all.
If you have a DX body and you think that you will possibly upgrade to FX in someday, then better collect FF compatible lenses. Yes they might be heavier/bulkier than DX versions but among other arguable advantages, at least one thing is for sure that you almost get no visible vignetting/light falloff (the image circles of FX lenses are larger than the DX sensor requires). And of course, it's a good investment for the future FX body.
Serkan