• Members 861 posts
    Dec. 4, 2023, 2:10 p.m.

    Forgive me if I'm not understanding what you are saying correctly and making a fool of myself with my words. I'm very limited on the technical side of things.

    Thing is, this isn't the first case of the same pattern happening and it's always on the sides like this, well the side that's the bottom in this case. I'm not 100% certain, but I think this only happening on this one side, which I beleive would be the right side if the camera is horizontal. I think it's somehow related to higher ISO. Don't ask me how, but it's these noisy images where it pops up. It shows up in the high resolution image when I make the correction tick mark. This export is downscaled.

    image without the correction applied
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    (/a/9kDbncGK6RJaSKX6qF7q3bKaqlEY1X0HNNzUisOFs8EWO6QlIyszIZxF29yYeT2n/19166/?shva=1)

    Lens is the Sony 30mm DT SAM Macro f2.8.

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    PNG, 1.7 MB, uploaded by OpenCube on Dec. 4, 2023.

  • Members 861 posts
    Dec. 4, 2023, 3:47 p.m.

    "Backyard Colors"

    backyardcolors.jpg

    backyardcolors.jpg

    JPG, 2.2 MB, uploaded by OpenCube on Dec. 4, 2023.

  • Members 370 posts
    Dec. 4, 2023, 4:46 p.m.

    I looked up some test data for your lens on DXOMark and it appears to have quite low distortion, which rules out my original hypothesis. It does however suffer quite significant vignetting at f/2.8, so with lens correction on ACR will be brightening the image in areas further away from the centre, with the amount of brightening added increasing the further from the centre the area is. This can make the image more prone to banding where the dynamic range is reduced, which is probably what you are seeing and you'll likely see this more in low light + high ISO situations, even more so if you lift the exposure or shadows when editing.

    Doing a Google search I found the following post on the Adobe forum which sounds like a similar problem to what you're experiencing (this is in Lightroom, but I imagine the underlying processing engine is similar). The last post is probably the most helpful.

    Link: Lens Correction Adds Circular Banding

    As the distortion on that lens looks pretty good in DXO's test, I'd probably turn off profile corrections for it when importing with ACR as they'll likely do more harm than good, unless of course the vignetting bothers you. I'm usually adding vignettes to help direct the viewers eye to the subject, so I don't think it would bother me too much.

    Link: Link to DXO Test Data

  • Members 861 posts
    Dec. 4, 2023, 5:25 p.m.

    I appreciate all the leg work. Yeah, it only seems to be an issue in the low light stuff and trying to pull the darks up makes the issue more prominent. The camera is old so it's bound to have some special issues. The correction flattens the image out relatively well. Perhaps I can find a way to "blur" away the issue going forward.

  • Members 1963 posts
    Dec. 4, 2023, 5:36 p.m.

    Looks like you had an "interesting" hike. I feel cold just looking at this set. The last two are my favourites.

    Good to see the Z7 with the24-200 in action. Pretty good for a lens that is not advertised as water resistant. Did you gear survive the dunking? My 24-200 had to have a trip back to Nikon when it came out of my camera bag and fell on a concrete floor. A new VR module and it is working fine again.

  • Members 1963 posts
    Dec. 4, 2023, 5:59 p.m.

    On Sunday I killed two birds with one stone. I wanted to add the perspective effects of the Laowa 15mm Shift to my old Blog post on the perspective effects of lenses, with Aldo Rossi's Ossuary as the subject. It is a cube, perfect for testing out stuff. I also wanted to do some blue hour shots in the center of Modena. More of the second venue next week.

    I thought the sunlight effect was worth looking at before I moved on. Not sure which version of the head on shots I like best.

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    The test shot

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    DSC_0677_HDR 1.jpg

    JPG, 670.2 KB, uploaded by NCV on Dec. 4, 2023.

    DSC_0698_HDR 1.jpg

    JPG, 1.0 MB, uploaded by NCV on Dec. 4, 2023.

    DSC_2363 1.jpg

    JPG, 1.1 MB, uploaded by NCV on Dec. 4, 2023.

    DSC_0680_HDR 1.jpg

    JPG, 716.0 KB, uploaded by NCV on Dec. 4, 2023.

    DSC_0689_HDR 2.jpg

    JPG, 653.0 KB, uploaded by NCV on Dec. 4, 2023.

  • Members 779 posts
    Dec. 4, 2023, 8:12 p.m.

    These are great shots. I love the play with geometry.

  • Members 370 posts
    Dec. 4, 2023, 8:18 p.m.

    Glad to hear you got yours fixed, the last time I tried to get a lens fixed, the repair quote was more than I paid for it in the first place.

    Fortunately mine doesn't seem to have come to any harm. It was in the water for mere seconds and I pulled it back out as soon as I could. I briefly ended up stuck with my elbow and knee in the water, holding the camera just above the surface for a much longer time while I found my balance again and could lift myself out of the water without giving the camera another dunking.

    I do recall reading a Lens Rentals teardown of the Z7 where they claimed it had the best water sealing they'd come across at that point and although I've tried to protect this camera from rough weather in the time I've had it, I'm not too worried if it gets a little bit of rain on it.

    The lens is another matter though. Nikon do market it as "sealed to protect from dust and moisture", but it's clearly not the most robust lens in their range, so I'm a little more dubious about its survival chances in a sustained downpour (or a dunking) and if water does get into its main cavity, there's nothing at the exit pupil to stop it getting into the body, so I don't think it's a lens to take risks with in extremely wet weather.

    That said, it does at least seem to have survived this little misadventure, which gives me a bit more confidence in it, but it's no Olympus 12-100 in the build quality department. I've had that thing out for hours, unprotected in sustained downpours and even run it under a tap to clean mud off it without feeling like I'm taking too much of a gamble.

    The only lens I've ever lost to weather was the Pana-Leica 12-60 f/2.8-4.0 which became waterlogged after being out for three hours of heavy rain. It became unable to focus and you could see water sloshing about behind the objective lens. Mind you even that worked okay again after it dried out and it still works to this day, six years later. Still, it's not surprising it failed when you look at the conditions we were out in. Absolutely crazy, but great fun and I wish I was still fit enough to attempt such silliness today.

    Whinlatter - Christmas Day 2017

    These were taken before the 12-60's weather resistance stopped resisting, so all of the fuzziness in these images is water on the lens and in the air. It was impossible to keep the damned thing dry, so eventually I gave up trying and just went with the wet aesthetic.

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    JPG, 220.5 KB, uploaded by SteveMonks on Dec. 4, 2023.

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    JPG, 165.0 KB, uploaded by SteveMonks on Dec. 4, 2023.

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    JPG, 236.0 KB, uploaded by SteveMonks on Dec. 4, 2023.

  • Dec. 4, 2023, 9:39 p.m.

    Steve, why not put your lens in a plastic box with lots of silica gel and put the box on a radiator or, as I do, on top of my stereo amp. There is a good chnce that the heat will vaporise any water and the gel will soak it up. I have used this approach successfully for things like my high tech remote car key when they get put in the washing machine by mistake! Just a thought.

    David

  • Members 370 posts
    Dec. 4, 2023, 9:56 p.m.

    Hi David, the Nikon lens seems to be okay. No signs of water ingress whatsoever, same for the camera, so I think it's good. It's sat in a warm room, so if there is any residual moisture remaining in it I'm sure it will evaporate over the next couple of days.

    The waterlogged one I shared the blurry pictures from above got wet six years ago and it dried out in a day or so and still works fine to this day.

  • Members 245 posts
    Dec. 5, 2023, 6:31 p.m.

    The first two photos of the ossuary have the feeling of Chirico (to me at least!)

    Another Alan

  • Dec. 5, 2023, 7:24 p.m.

    That was my first reaction also, but I dismissed it as fanciful...

    David

  • Dec. 5, 2023, 7:29 p.m.

    This last one gives me the impression that the close corner is actually higher (taller) than reality. This is backed up by the fact that the upper corner windows look larger than the lower ones, whereas the first picture shows that they are actually all the same size.

    David

  • Members 245 posts
    Dec. 5, 2023, 7:49 p.m.

    Nothing wrong with fanciful! 😃😃. I’d certainly be very pleased if I’d taken it…

  • Members 1963 posts
    Dec. 5, 2023, 8:04 p.m.

    Aldo Rossi would have been well aware of the work of his fellow Italian, di Chirico. His work has been compared to the artists paintings.

  • Members 861 posts
    Dec. 6, 2023, 9:45 p.m.

    "Meltdrown"
    Meltdrown.jpg