Originally posted by psoo Hi Luftfluss, I just re-read your comment to my post. Can you explain the difference between lens "resolving power" and "sharpness". Aren't they the same thing. For example, if I took a photo of, say, a hair with my usual camera and lens and it looked "sharp" I might be happy with the result. However, if I changed the lens to a super-dooper expensivel lens and took another shot I could find that the image showed two hairs almost stuck together. The lens had greater resolving power and gave a "sharper" image. Aren't sharpness and resolving power the same, or am I just splitting hairs?
Sometimes I feel like being very careful with how I phrase things...
I shoot with a mix of both modern "digital" lenses and legacy glass, and while the newer lenses often at first glance appear "sharper" - that is, having more crisply defined and apparent detail - when I more closely scrutinize similar photos made with a modern lens and an old lens, sometimes I find they resolve about the same amount of detail, but the older lens is less "in your face" about it.
Edit: I think I found my post that you are referring to, where I compared the K-3 II and K-5 II in terms of resolving power. "Resolving power" - the amount of detail that is resolved in an image - is a function of both the lens and the camera's sensor, while "sharpness" is an attribute I ascribe primarily to a lens. If you photograph a scene that contains much detail - like a leafy landscape - and you attach a great lens to a 16MP camera and the same lens to a 24MP camera, the resultant photos would appear to be similarly "sharp", but the photo made with the 24MP camera would contain more detail simply because there are more pixels available to create the image.
I think the link posted by @swanlefitte is a good one.
Last edited by luftfluss; 01-10-2020 at 10:22 AM.