Sigma 24mm f/1.4 DG HSM Art Aperture Series: Bristlecone on Bare Hill, Checking for Lens Symmetry (Canon 5DS R)
Related: Canon, Canon 5DS, Canon 5DS R, Canon DSLR, focus skew, Inyo National Forest, lens mount / sensor parallelism, lens skew, peak bagging, Pinus longaeva, quality control, Sigma, Sigma 24mm, Sigma 24mm f/1.4 DG HSM Art, Sigma DG HSM Art, Sigma Lenses, White Mountains
Get the Sigma 24mm f/1.4 DG HSM Art at B&H Photo.
The lighting was harsh, and I have many more attractive scenes, but the subject matter here is perfect for seeing just how demanding a 50 megapixel sensor can be.
But mainly the subject was chosen to assess performance both in terms of how much stopping down is required for good quality, how much depth of field it delivers (real depth of field), and whether the lens shows symmetry of sharpness across the frame.
In DAP:
Just how good the Zeiss Otus line is and how the Sigma Art lenses are not in the same league is plain to my eyes. Shooting a DSLR? Otus or bust. Sort of a good, better, best thing (Nikon/Canon, Sigma Art, Otus).
The track of a motorcyle mars a very sensitive environment at about 11,500' elevation. Such thoughtless damage keeps increasing in this pristine area, which now has Wilderness designation.
Canon EOS 5DS R + 24mm
[low-res image for bot]
