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androidlad

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Posts posted by androidlad


  1. 16 hours ago, EphraimP said:

    I have the SmallRig handle that mounts to the bottom of the Ronin. It has cutouts, so not a lot of space for something like velcro. I suppose if I really put my mind to it, I could come up with a solution. 

    Speaking of running the camera off of usb power, has anyone had the experience of the battery running down over time, even though it was plugged into a power supply (usb or v-mount) that still had plenty of charge. I had that happen this weekend and the camera wouldn't run anymore. Luckily I had a dummy battery that plugged directly into the DC power of my v-mount battery plate.

    It has to be PD compatible power source (9V) for continuous power without battery depletion. Regular USB power (5V) can only trickle charge.


  2. 4 hours ago, EphraimP said:

    After using the Ninja V on a concert shoot this weekend, I'm feeling the pain of the micro HDMI connection. I had used the monitor a day or two before for a corporate shoot at an acupuncturist's office, and didn't have any problems with it locked down on sticks or with a bit of handheld to get b-roll. 

    The first evening of a two-day concert event I got booked for, the mini HDMI end of the cable came out multiple times and the metal male insert ended up bending. I think a big part of the problem the 90 degree bend in the Atomos cable. It bends in such a way that it exerts pressure on the connection and basically "wants" to break it. And is so thick that the recommended SmallRig cable clamp for my cage doesn't fit it. I can't find a clamp that will work. 

    Luckily, I didn't pay for the damn cable, I found a package deal from Adorama on Amazon that bundled the cable with the monitor for the normal price. I'm definitely going to ask Adorama to warranty the cable. Can anyone recommend a legit to mini HDMI cable with a straight emd that will record 4k 60 and isn't 10 feet long?

     

    https://www.lindy.ie/cables-adapters-c1/audio-video-c107/0-5m-cromo-slim-high-speed-hdmi-to-micro-hdmi-cable-with-ethernet-p7228


  3. In reality, IMAX 65mm/70mm film is not 12K (theoretically it's 18K). Taking into account image degradation during processing, printing, handling, storage and exhibition. The actual perceived resolution is around 6K to 8K. That's why most of the VFX shots in the Dark Knight IMAX sequence were rendered in 5.6K, after numerous tests and comparisons.

    Also GFX100 is technically a 12K camera (if you shoot time-lapse with it). For strictly motion picture camera running >24fps, 8K is the end.


  4. 1 hour ago, Mokara said:

    The S1 is supposed to be oversampled. The problem at lower resolutions is the increased processing demands that places on the camera, so there are artifacts that result. Not necessarily pixel binning/line skipping as such, but rather crude approximations of the data which has a similar results.

    4K <30p is. 4K 60p is 1:1 readout. 1080p is not oversampled but pixel-binned and line-skipped. Period


  5. You need to test it with pin-sharp and consistent focus and smaller aperture, some of the shots are clearly out of focus. View them in full screen and full quality

    Use the DPReview video stills comparison tool: https://www.dpreview.com/reviews/panasonic-lumix-dc-s1-review/8

    You can see moire and aliasing in every resolution, framerate and crop mode, with 4K FF <30P being the least noticeable, and 1080p modes being the most noticeable.

    S1 doesn't have an OLPF so it's prone to this.

     


  6. 40 minutes ago, Otago said:

    I agree, it's present in both of them when it's in focus. 

    I think the solution is to shoot 4K, which is downsampled from the 6K and won't show any of those artefacts ( if it's been done well and there seems to be no evidence it's not ) and then downsample again to 1080 when you are editing. You could also try a softening filter as a form of OLPF if 1080 in camera is necessary. 

    Can you tell from it being inconsistent between the horizontal and vertical what they are doing with line skipping vs binning ? Do they have to use what the sensor provides or can customers make their own version by changing the microcode on the chip ? Do you know if the sensor control unit is addressable in anyway ? 

    You can run a Fast Fourier Transform using Matlab with a high detail test scene to determine the actual sampled resolution.

    On IMX410, it's usually horizontal binning and vertical line-skipping. IMX5XX added pixel-weighted binning which improved quality a little bit.

    To save R&D effort and cost, they usually use preset readout drive modes.


  7. 20 minutes ago, andrew_dotdot said:

    Zooming = uneven exposure. Is this a thing with the X-T3?  --> So, I'm filming with my Fuji 18-55mm f2.8-4.0 lens, with the aperture locked at 4.0, ISO locked down, shutter speed 1/50th...

     

    What I expect: Since f4 should be available through the whole zoom range, I'd expect the exposure to stay the same through the whole zoom.

    What I see: Zooming in, it slowly gets darker, then snaps back to lighter three times on the way in. And vice-versa on the way out.  

     

    Anybody know a way to avoid this or a workaround?

    If you search this forum, this questions has been answered a few times.

    The abrupt exposure shifts are due to aperture changes designed to facilitate movement of lens elements during zooming.


  8. You left out a key piece of info - they were shot in 1080p60.

    Non-crop 1080p on all DSLR/mirrorless cameras is derived from pixel-binning, or line-skipping or a combination of both.

    The artifacts you are seeing is moire and aliasing as a result from pixel-binning and line-skipping, this is very common and completely normal, it's particularly severe on S1 due to the lack of an OLPF.


  9. 4 hours ago, sanveer said:

    I saw this too, yesterday or the day before.  But, Curiously, there is very little or insufficient  information regarding the drone, except the press release. The only footage seems to be the timelapse, and that too provides no indication of anything. Also, how large is this drone. Is it even pocketable. Does it fold quickly and small? 

    There's a review here with some sample footage:

     


  10. 1 hour ago, Snowbro said:

    They still havent updated their shit app to support the S10, a major flagship phone. It's going to be a year soon, I couldn't even fly the drone without it restarting my phone mid-flight.. now they increased their price $230 🤣. They expect a raise after getting extremely lazy, so many threads of people complaining since March (they saw and replied they are working on it..). It used to only be a very short period of time until they supported new devices. Then when you fix the barrel distortion, it actually decreases image quality quite a bit in testing. 

    They really need some competition.

    Competition is already here: https://www.dpreview.com/news/6887022560/yuneec-announces-typhoon-h3-drone-co-engineered-with-leica

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