To summarize the above analysis for the purposes of this discussion, for a given body/focal length combination, \"pixel pitch\" determines resolution. Below is the pixel pitch in microns for a few Canons DSLRs (lower is better):
1D3: 7.2
5D2: 6.4
1D4: 5.7
7D: 4.3
To get a better idea of what the above numbers mean, below is a comparison of the \"relative\" pixels the following body/lens combination puts on a subject at the same distance from the camera (higher is better):
300mm+5D2: 1.0
300mm+1D4: 1.1
300mm+7D: 1.5
400mm+1D4: 1.5
400mm+7D: 2.0
500mm+1D4: 1.9
500mm+7D: 2.5
For example, from the above numbers, 7D+300mm (1.5) resolves for the same camera-to-subject distance:
- as much detail as 1D4+400mm (1.5)
- \"50% more\" detail as 5D2+300mm (1.0)
Of course, these numbers don\'t factor in sensor noise/quality, but in good light, a 7D sensor theoretically resolves more detail than the other sensors.
There are also diffraction limits to resolution at very long focal lengths, but I doubt most of us need to worry about that. :-)
To summarize the above analysis for the purposes of this discussion, for a given focal length, \"pixel pitch\" determines resolution. Below is the pixel pitch in microns for a few Canons DSLRs (lower is better):
1D3: 7.2
5D2: 6.4
1D4: 5.7
7D: 4.3
To get a better idea of what the above numbers mean, below is a comparison of the \"relative\" pixels the following body/lens combination puts on a subject at the same distance from the camera (higher is better):
300mm+5D2: 1.0
300mm+1D4: 1.1
300mm+7D: 1.5
400mm+1D4: 1.5
400mm+7D: 2.0
500mm+1D4: 1.9
500mm+7D: 2.5
For example, from the above numbers, 7D+300mm (1.5) resolves for the same camera-to-subject distance:
- as much detail as 1D4+400mm (1.5)
- \"50% more\" detail as 5D2+300mm (1.0)
Of course, these numbers don\'t factor in sensor noise/quality, but in good light, a 7D sensor theoretically resolves more detail than the other sensors.
There are also diffraction limits to resolution at very long focal lengths, but I doubt most of us need to worry about that. :-)
To summarize the above analysis for the purposes of this discussion, for a given focal length, \"pixel pitch\" determines resolution. Below is the pixel pitch for a few Canons DSLRs (lower is better):
1D3: 7.2
5D2: 6.4
1D4: 5.7
7D: 4.3
To get a better idea of what the above numbers mean, below is a comparison of the \"relative\" pixels the following body/lens combination puts on a subject at the same distance from the camera (higher is better):
300mm+5D2: 1.0
300mm+1D4: 1.1
300mm+7D: 1.5
400mm+1D4: 1.5
400mm+7D: 2.0
500mm+1D4: 1.9
500mm+7D: 2.5
For example, from the above numbers, 7D+300mm (1.5) resolves for the same camera-to-subject distance:
- as much detail as 1D4+400mm (1.5)
- \"50% more\" detail as 5D2+300mm (1.0)
Of course, these numbers don\'t factor in sensor noise/quality, but in good light, a 7D sensor theoretically resolves more detail than the other sensors.
There are also diffraction limits to resolution at very long focal lengths, but I doubt most of us need to worry about that. :-)
To summarize the above analysis for the purposes of this discussion, for a given focal length, \"pixel pitch\" determines resolution. Below is the pixel pitch for a few Canons DSLRs (lower is better):
1D3: 5.0
5D2: 4.4
1D4: 3.9
7D: 3.0
To get a better idea of what the above numbers mean, below is a comparison of the \"relative\" pixels the following body/lens combination puts on a subject at the same distance from the camera (higher is better):
300mm+5D2: 1.0
300mm+1D4: 1.1
300mm+7D: 1.5
400mm+1D4: 1.5
400mm+7D: 2.0
500mm+1D4: 1.9
500mm+7D: 2.5
For example, from the above numbers, 7D+300mm (1.5) resolves for the same camera-to-subject distance:
- as much detail as 1D4+400mm (1.5)
- \"50% more\" detail as 5D2+300mm (1.0)
Of course, these numbers don\'t factor in sensor noise/quality, but in good light, a 7D sensor theoretically resolves more detail than the other sensors.
There are also diffraction limits to resolution at very long focal lengths, but I doubt most of us need to worry about that. :-)
To summarize the above analysis for the purposes of this discussion, for a given focal length, \"pixel pitch\" determines resolution. Below is the pixel pitch for a few Canons DSLRs (lower is better):
1D3: 5.0
5D2: 4.4
1D4: 3.9
7D: 3.0
Of course, these numbers don\'t factor in sensor noise/quality, but in good light, a 7D sensor theoretically resolves more detail than the others.
There are also diffraction limits to resolution at very long focal lengths, but I doubt most of us need to worry about that. :-)
Sep 29, 2012 at 01:09 PM
Previous versions of Suresh T's message #11003088 « Your choice of body for wildlife? »
