clarnibass
Senior Member
I can't tell for sure but bottom left looks like the lowest resolution and maybe (less sure) bottom right is the highest resolution. Though in this case "resolution" means the sharpest and/or most details that lead to that photo and there could be other factors, like AA filter, the specific way their down sampling works, etc.
I disagree (not necessarily with you) that there is a "correct" way to compare e.g. up scaling to the larger size or down sampling to the smaller size. The way to compare is the way you want to use the photos. Even down sampling to the smaller size is irrelevant if you never view at that size. But, sometimes you want to look at details 100% (or the largest size that would still look good) so you don't compare at a certain size regardless of camera.
For example in concert photos I almost always only need them at web sizes, like a full size on an average screen or phone. It doesn't matter how they compare at 100% but I crop a little occasionally. For some macro photos (usually 1x to 5x magnification) I have printed very large before (almost 2m width) and like to look at the largest size on screen to see all the detail (usually at 100%). I remember seeing a comparison that showed how in web sizes, photos from the A7SIII actually looked better than higher resolution cameras (I think photos were about 3mp). Some hobbyists might want to crop a lot (e.g. have a family scene and then crop just their kid from it).
I agree with you in general...
I disagree (not necessarily with you) that there is a "correct" way to compare e.g. up scaling to the larger size or down sampling to the smaller size. The way to compare is the way you want to use the photos. Even down sampling to the smaller size is irrelevant if you never view at that size. But, sometimes you want to look at details 100% (or the largest size that would still look good) so you don't compare at a certain size regardless of camera.
For example in concert photos I almost always only need them at web sizes, like a full size on an average screen or phone. It doesn't matter how they compare at 100% but I crop a little occasionally. For some macro photos (usually 1x to 5x magnification) I have printed very large before (almost 2m width) and like to look at the largest size on screen to see all the detail (usually at 100%). I remember seeing a comparison that showed how in web sizes, photos from the A7SIII actually looked better than higher resolution cameras (I think photos were about 3mp). Some hobbyists might want to crop a lot (e.g. have a family scene and then crop just their kid from it).
I agree with you in general...
