« on: February 15, 2014, 09:06:18 AM »
I am considering buying a high MP body for landscapes. Right now Canon does not a high MP body (5DM3 is 22 MP), not quite high MP.
Other thoughts are welcome.
I'd look at this a different way; 22 mp is high mp. I know it's not in sympathy with your question but I'll explain.
A 36 mp FF sensor is still FF, that is the actual recorded image is the same size. True higher mp result in more theoretical resolution, put in practice this will depend on the viewing size and the lenses used. For instance it has been shown that the 24-70 II on 5Diii results in more resolution than the equivalent lens on a D800. OK so you could put the Canon lens on the A7r but you still have a recorded image of the same size at capture. The lack of AA filter is a red herring as after sharpening you'll finish with the same detail from a viewing point of view.
At Building Panoramics I stitch frames which result in images of about 50 to 100 mp depending on the camera and frames uses. I inevitably have to dump resolution to achieve the best viewing resolution of say a 1m wide picture. What is interesting is that on the occasion when I have used an 18mp aps camera and stitched the resulting image does not have quite the same depth as that produced from a 12mp FF camera despite the fact that single frames from the 18mp crop camera clearly have more resolution.
In my opinion the moral of the story is that if you want to go beyond 22mp you really need a larger format. When I produce a panoramic stitch it's overall capture area is larger than most current dMF systems.
Higher mp does give more scope for cropping but with landscape this isn't really relevant.