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correctedcat.jpg
05-Sep-2013

correctedcat.jpg

Pentax K-5
1/800s f/5.6 at 10.0mm iso100 full exif

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Lensrentals27-Oct-2013 16:17
he attached photo toutcategories.jpg can compete (and prevail) in almost every category you have in your contest, with the possible exception that the camera used (Pentax K-5) has a movie mode, but I'm not sure how to turn it on. Probably sucks in any case...

Sharpest Corner
Dear great gravy boats, look at those whiskers! Not enough for you? Gaze on down to the fence (2D test chart) in the background, or sample that painstakingly weathered *real* (not simulated) woodgrain. Leafy sharpness up above fading into a gorgeous "bokehlicious" mess down below, which leads us to...

Bokehliciousness
Screw that f/0.95 Noktilux abstract blurry nonsense... this image is from a 10-17mm zoom fisheye @10mm and f/5.6, on an APS-C camera... and yet there *is* bokeh! Both fore and background bokeh: the 17kn climbing "quickdraw" 'biner is lovingly OOF (and holds up a bird feeder, making that one smart cat), while the "busy" background is softened just a touch (enjoy that dreaminess of the trees in shadow against the sky).

3-D Rendering of a 2-D Test Chart
It all practically pops out at you, threatening to scratch your eyes out. (Really, she's a bitch of a cat sometimes!) You've got two different kinds of fences back there, and did I mention cat whiskers??

Largest Number of Accesories Between the Lens and the Camera
Well now, this gets a bit murky. It's basically the Pentax DA 10-17mm mounted directly to a K-5... oh, but wait! There's more! This lens is my "workhorse" for spherical panoramic photography, so it has been permanently clamped (see lensgunk.jpg) to 10mm (not so zoom-zoom like a Mazda) with an Arca-compatible mounting plate under the lens. Thank you Nodal Ninja!

Best Picture of Stuff Inside a Lens
Did I mention "workhorse" of a lens? Try 14,113 images shot with it (14k.jpg) in the past two years alone! See the image lensgunk.jpg for: #1, the coating coming off from an acid splash (ah, industrial photo shoots); #2, some kind of sap or syrup on the glass and what passes for a filter thread. Finally, peruse the curious darkening of the sky above the cat's shoulder. It's also an unsealed zoom lens, so #3 is some kind of hair or floaty in there. I already have another 10-17 that I'm saving for the day this one gets dropped, crushed, or the post-processing is too much to bear.

Most Distortion Corrected in Software
This part is a walk in the park for a corner-to-corner 180° fisheye (which it manages at 10mm on APS-C). Take a look at horscorrection.jpg for a choke-fest. I've only partially corrected all the lovely fisheye distortion because otherwise it would just be a cat nose and a fraction of a whisker in the frame. Oh, but the CA from this lens is multi-pixel horrendous, and something I've learned to tame even before our Adobe overlords made automatic CA correction the norm. Vignetting? Ha! The only thing it's missing is longitudinal CA, which I'm sure is there since this is no APO, but who would notice that in a fisheye?

Dynamic Range Demonstration
The lovely (and now ubiquitous) Sony 16MP sensor tweaked by Pentax in the K-5 can absorb the "white cat in full sun and shade" demonstration with 14-bit authority, and keep on going! ETTR is for pussies! Try pulling fully black shadows back up to accurate leafy greens with no trace of chroma noise. That's Booyah DR!
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