TheBoogieKnight
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Rolling shutter compensation in-camera?
TheBoogieKnight replied to TheBoogieKnight's topic in Cameras
Hmm interesting. Even with pretty fast pans it doesn't seem like you'd need much of a crop so maybe a fixed crop would work. Saving the movement data definitely sounds like a potential avenue although maybe AI based solutions could calculate it from the image without even needing this data (warp stabilisers already do something similar). I've been using Denoise AI recently and it's pretty incredible how far we've come in terms of image processing. -
We've got a lot of cameras now that allow you to crop in to improve (or give) IBIS so I wondered if any companies have used the same idea in-camera to combat rolling shutter. The cameras have accelerometers and gyros built in so presumably this could be implemented fairly easily although it obviously wouldn't work on moving subjects!
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Sony A7S II successor 9m dot 4K native EVF panel?
TheBoogieKnight replied to Andrew Reid's topic in Cameras
I think Sony EVFs are using RGB now. The 5.76 million dot EVF on the S1 (which I love) works this way so this new one is maybe 2160x1440. Either way it's pretty impressive! The current 5.76 one has a refresh up to 240fps but the only (I think!?!?!) cameras that use it (S1 and A7rIV) go up to 120. -
Hi Stab I think the optics must have become misaligned somehow but I've got no idea how. I ended up getting a halo around high-contrast areas. I don't know if it happened suddenly or was a gradual thing. As I said I noticed during lockdown after taking a few pics. I didn't need to pixel peep, it was pretty easy to see. I did initially think it might be the AF but I did some tests and it definitely wasn't; something had happened inside the lens. This is probably just a one-off but as I said I've read a few people having problems with the AF/MF clutch and aperture ring on these lenses and (as far as I know), they had to get replacements as even those parts weren't serviceable.
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Hi Mark, yes. To be fair I can't fault the return process.
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Yeah it's where you draw the line with pricing I guess. Like you if a 100-200 item breaks after a year it's fair enough and I've probably got my money's worth. A 2.5k lens is something else entirely though. What happens to the faulty ones, they're get torn apart and the salvageable parts used to make new ones I presume!? I did see the official repair price of the lens (well replacement obviously) which was half standard retail. That's at least something I guess but no idea if Nikon/Canon/Sony etc. etc. offer the same?
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Yeah I've seen a few people had problems with the Panny 50 too; usually the clutch but sometimes other things. I realise anything can fail but I can't think of many things that are a complete write-off if basically anything goes wrong. Certainly not at these kind of prices anyway.
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So over lockdown I've been trying to keep myself busy with the odd photography job and I noticed that my Panasonic 50mm didn't seem as sharp as it was when I got it. I did a few tests and surely enough it had become pretty soft (for whatever reason). Sent it off to be looked at/repaired and was immediately told they aren't reparable. Fortunately the lens was under warranty (runs out in November) and I was quickly sent a new one which is perfect. I have to say it's kind of scared me a little though and I've seen a few reviews on Lens Rentals where they basically said the same about the Canon RF glass. If the same thing happens in four months time I've got a hunk of glass worth nothing. I'm seriously interested in an R5 but the thought of paying (for example) 2.5k for the 85mm lens only to find it develops a minor fault and is worth nothing a year later just seems insane to me. Unlike many here I'm firmly at the semi-pro level and while I can just about justify prices like this for a 5 year investment (or at least the ability to sell it on), one year is totally nonviable. Are all lenses built this way now? What do you lot all do, invest in extended warranties? Are they worth the paper they're written on?
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The New Panasonic G100 “vlogging” Camera to launch June 24th
TheBoogieKnight replied to Video Hummus's topic in Cameras
Take out everything that Vloggers want in a camera and advertise it as a camera for Vloggers. -
Hmm maybe I'm confused. As far as I saw it, if it's 2X skipped and binned, 1/4 of the light is reaching the same sensor area (fewer photo sites are used) compared to oversampling from the full sensor. I realise that each individual pixel is getting the same amount of light with skipping/binning, but you're losing the oversampling which would be taking 4 pixels and combining them into one, effectively giving two stops lower noise. I can get that exact same lower noise benefit by shooting with a 2 stop wider aperture. If I do this with skipping/binning, I'd reduce my DOF 2 stops. If I do this with a crop, I have to step back (or use a wider focal length) which means I get that DOF back to where it was. Of course oversampling has other advantages, but you're going to lose them with both binning/skipping and a crop.
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Well with a Quad Bayer you'd only be losing 2 stops so definitely more usable. As to the crop, it means you can reduce focal length to equivalent framing before the crop, then reduce ISO and open the aperture to get equivalent depth of field/light gathering. Like how using a 50mm F2.8 lens on a 1.5 crop APS-C sensor is equivalent to 75mm F4 on a FF sensor. So it doesn't increase the amount of light, it just allows you to keep it the same with equivalent framing, something impossible to do with a system using binning/skipping where you can only get more light in by reducing your DOF.
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I'm sure it's on the way and just got held up in the post... 😄 I'm more worried about how useful the 120 is going to be given (unless it's a Quad Bayer sensor) you're probably gonna lose 4 stops of light over the 8k/30 with the skipping/binning and faster shutter speed. If this thing has a usable ceiling of 8,000 ISO (for example), you're down to 500 at 120p. Same as the S1 in 1080/120 I guess which needs lots of light and is often unusable indoors. I hope they add a crop mode. At least then you can get the same DOF without losing a ton of light.
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Oh wow so you think this July 2nd rumour is true then?
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I don't think anyone has even touched one yet. Well maybe the peeps at Canon....
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I don't see a reason it can't be great even if skipped/binned and they might offer cropped modes anyway (which I'd far prefer TBH). With the crazy readout speed they might offer something like 4k oversampled from 5.6k at 60p (what current FF 24MP cameras are effectively are offering at 30p).
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Are you running the latest version of OsX on your Hack? There were a lot of posts about the crushed black issue a while ago (several months) but it was apparently fixed by Apple in an OsX update.
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Mentioned it in the other post but I think there's a good chance they'll offer cropped modes for 4k60 or 120. Nobody likes a crop but it's got several advantages over pixel binning or line skipping. Even if it is skipped/binned though, it's still 4k/120 compared to something like the S1H which also uses binning/skipping but only does it at 1080p. Regarding the 4k/30 RAW, how practical/useful is around 15 minutes of footage on a £700 CF Express card? It's got that USB port so maybe they'll also offer recording that way?
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Do we think it's likely we'll also get the option to use a crop rather than line skipping/pixel binning in 4k 60/120? There are a lot of situations where I'd prefer a crop.
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One thing I don't get (and I've seen it on a few videos recently) is how the S1/S1H render some reds as a vivid orange, but only certain shades (other reds don't get affected at all). It doesn't look like it's sensor related as a recent test with RAW showed the effect vanished! One's the Pocket 6k, the other the S1H.
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Remember sensor area is squared so a M43 lens would only cover roughly 6mp on a 24mp sensor.
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I've read in a few sources that the S1 adds sharpening (even if these options are turned right down) for the oversampled 4k footage and not for the 5.9k footage so that could go some way to explaining this?
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Is this only certain photo styles? Just I tried this last night and the results were identical at every ISO from 4,000 to 51,200.This was on the standard profile.
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There's a few tests on YouTube if you go hunting. It looks good but not as good as the RF glass. Here's one testing Eye AF on the R with EF glass: He also has one with RF glass. The R5 might be improved of course!
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I worry about the system succeeding but love the lenses and body. It seems to be much more expensive in the US than other countries which is unusual. The CF Express does show advantages in burst mode (there's pretty much an infinite buffer) but without AF it's obviously got limited use. They must cost an awful lot more to produce than the A7 III; not just the EVF/LCD but pretty much the whole body. I get they could have priced it lower but they'd still have the problem of the poor C-AF and seriously limited range of (expensive) lenses (although you can adapt a huge range of course) so I'm not sure they'd have enough to differentiate. I bought mine as I loved the ergonomics and quality of the body (and it was well priced). I've never regretted buying it but I would consider something like the R5 with FF 4k60/120 and good AF.