Thank you, Igor! There are several sources of "noise" or, more precisely, imaging artifacts in this photograph. First is just atmospheric haze and the necessary rendering manipulations to minimize it; yesterday wasn't the clearest of days. Second is the fact that it's an auto-merge of six hand-held exposures (no, I did not take the tripod with me), so a bit of image artifacting at the blending seams happens. And third, remember that any Light L16 single image is actually a merge of 10 out of 16 small sensor camera exposures, with three equivalent focal lengths (28mm, 70mm, and 150mm) being combined to achieve each single exposure. There are due to this some small blend artifacts which crop up in certain kinds of subject areas, where the camera images are overlapping, and foliage is one of the hardest subjects to image and merge like this due to wind and "not quite exactly at the same instant" exposures made at the 10 cameras.
So while the total pixel count is very high, the imaging qualities and actual picture resolution/acutance differs somewhat from a single large-sensor camera photo, and is variable across the field of view. I've done some experiments by shooting a blank wall with just a little texture and then bashing the tone curve into truly pathological shapes that brings out all the individual camera exposure areas and where they blend: It's a fascinating study. The benefit of a camera like this is to have essentially a 50Mpixel camera with an equivalent FoV range from 28mm to 150mm in a package that's just a hair bigger than a "Plus" sized iPhone and weighs similarly. It's my favorite "pitch it in a tiny bag and go for a bicycle/motorcycle ride" camera by far, aside from the iPhone 8 Plus itself. But of course, only photographers sit around at 1:1 resolution examining all the pixels in an image. I do too, just for the fun of it, when I'm learning and analyzing the performance of my cameras. But when I'm viewing a photograph like this, what I really want to see is it printed nice and big, and view it normally from 5-6 feet away, looking closer at details occasionally. The artifacts of its capture and processing will likely be invisible then. I think I want to have this one printed for me on smooth canvas … it will print to 12" tall by 50" wide at 360 ppi and should look stunning. (I could print it myself, but I so infrequently want to print anything that large it seems absurd to buy a roll of 13" paper and battle the printer just for this job… :-) That little print job will run me about $180 for a stretched canvas wrap. Perhaps I'll have it done in August and call it a birthday present to myself. onwards! G — "I don't mind if you don't like my manners. I don't like them myself. They're pretty bad. I grieve over them long winter evenings." – Philip Marlowe > On May 24, 2018, at 10:18 AM, Igor PDML-StR <[email protected]> wrote: > > > That's a gorgeous view! > I just realized that I've never driven that way from San Jose. > > > I was just curious: When I look at the full-res image, fully zoomed-in, I see > something that looks like noise. At first, I noticed it in the > blueish-grayish portion (the mostly-urban valley and trees surrounding the > buildings). I attributed that to the haze in the air. > Then, I've noticed a similar noise in the green trees and bushes that are to > the right of the nearest dozen-or-so trees just behind the grassy area. Then > I've noticed those almost everywhere... > It seems to be less apparent in some areas, and more apparent in others. > > Is this just the sensor noise or the optical limitation of the lens (e.g. of > the diffraction-limit of the lens aperture)? > Or, could be some type of artifact, e.g. of processing/stitching, etc.? (I > assume you were using a tripod and not testing your bike's suspension while > shooting, so the camera shake is probably ruled out. :-) ) > Do you know what's the culprit? > > Thank you, > > Igor > > > >> Godfrey DiGiorgi Thu, 24 May 2018 06:54:40 -0700 wrote: >> >> Took a ride up Mount Hamilton Road on the Moto Guzzi V7III Racer yesterday, >> shaking out details in the suspension settings. I didn't quite make it all >> the way to the top, due to lack of time, but about half way up I caught this >> six frame panorama of Silicon Valley looking from the southeast: >> >> >> https://flic.kr/p/24JaZqU >> >> The real magic is in the full resolution image (87 Megapixels!), but it's >> about a 20 Mbyte image file, compressed. If you want to take a look, here's >> the link: >> https://farm1.staticflickr.com/975/27452792127_01f7db597c_o.jpg -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
