I am new here, so I had better introduce myself a little. The Pentax K1 is new to me, but not photography. I am impressed with the zeal and the interest in the technical aspects of photography at this Pentax forum. Nice group and with real interest! I may just hang out here as I learn the K1.
I mostly hang at NikonGear.com, Luminous-Landscape.com, Fotozones.com, and other sites. Many questions have been asked in this thread and I probably don’t have time to answer them all in detail. I will try a couple.
The reason I use lenses that are fast (f/1.4, etc.) wide open and well corrected is that I mostly stack close-up images. I include one below that I put up on Dpreview.com just for this forum, since we can’t post images here directly from our hard drives (correct me if I am wrong). A lens that is fast wide-open can use the narrow DOF of a fast-wide-open lens to “paint” focus to build a block of the image in sharp focus, while leaving the rest of the photo to go to good bokeh. As for the “well-corrected” part, the secret IMO to real sharpness is not just acutance and resolution, but color correction, i.e. not having all that horrible fringing that muddies the color.
My reason for an interest in the Pentax K1 is the treatment of color purity by the avoidance of the muddy (by definition) color from Bayer interpolation achieved with the Pentax Pixel-Shift.
The reason to use LiveView is to be able to magnify the image to achieve more exact focus. Here is an example of a close-up shot taken with the Nikon D810 with the El Nikkor 105mm APO lens (on a bellows), and Zerene Stacker.
http://www.dpreview.com/forums/create?type=discussion&forum=1054
Also, many hundreds of photos (and many articles, books, video tutorials) under Free e-books here:
Read more at:
https://www.pentaxforums.com/forums/6-pentax-dslr-discussion/323020-pentax-k1...#ixzz4B3mFgWrF e-Books