Canon 5D v 7D
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- pr20
I can't comprehend that even with pictures there are some people who still don't get it... So here is a clear, I hope, explanation:
If i put 70mm lens on 5D and 70mm on 7D i'll get the same circles of blurriness within the frame:
But as you can see with 7D i'll see significantly less. Because of the cropped sensor, to get the same exact frame with 7D as with 5D, i would have to use 43mm lens on 7D to see what 70mm lens is seeing on 5D.
So if you compare the blurry circles of 5D with 70mm lens:
and 7D with 43mm lens (the focal length that matches the 5D's 70mm):You can clearly see that the blurry circles are larger with 5D then 7D... Thus 5D has shallower DOF.
- pr20
Now can you make the blurry circles with 7D as large as 5D? - Yes, you would have to move the camera further back, but let say if there was a wall behind you and you couldn't... Then you would have to be stuck with 7D's lesser DOF.
- hans_glib0
omg, wtf, ffs, etc
it's the lens that makes the difference not the camera...
a wide angle lens has a greater depth of field than a telephoto lens.
so naturally if you use a wider angle lens on the 7D to get the same crop, more of the image will be in focus than the 70mm on the 5D. But that's the lens, not the camera creating this. As you say yourself, the DOF of the 70mm lens is the same when mounted on the 7D or the 5D, but the FOV is reduced on the 7D.
So it's ridiculous to say that the 7D has greater DOF. It has a smaller sensor, so requires wider lenses to achieve the same field of view, and it's these wider lenses that give a greater DOF. The camera itself is just a sensor plane.
- svenreed0
true hans, however in order to equally match the too cameras, or planes a 7d will require wider lenses.
all in all a 5d or full frame camera will give you the most range out of your glass, considering that the ef line was built for 35mm planes
- inteliboy0
feedback loop going on here...
- pr20
I give you, if you don't understand this simple concept then go ahead, live your life believing that the world is flat.