Slaginfected

Joined on Apr 23, 2013

Slaginfected's recent activity

  • Let me pick low ISO samples from a 5D3 and a D800 and equalize them both in size and (more or less) in color. They are the same, aren't they? We both know the answer to that. I also don't think I ...
  • Replied in Measured ISO
    The most interesting measurement(s) from DxOmark are the full SNR curves. They tell a heck lot more than the DR curves or anything else they offer; followed by the full CS diagrams. Once you start ...
  • My bet would be on some messup with the white balance. Either the camera is providing such wrecked values or ACR interprets them not correct or, also possible, the combination out of white balance...

  • I was even referring the "low light image". Daylight or light similar to that usually yields better results, because the color distribution by the light in combination with the white balance yields...

  • Just to be clear: I like the picture as such.

    From a technical point of view I didn't expect anything else, though. The single pixels of that 50MPix 2xFF sensor are a bit larger than these of the...

  • The ISO12k low light image has a whacky touch of green in it. I wonder where that is coming from.

  • I see a lot of purple in the picture of the Canon. Exactly this kinda stuff not happening is what you pay for if you get something more expensive. Stopped down primes have been quite sharp decades...

  • @Stu 5: Thing is, this is a test of camera + lens. I'd be very careful saying the A7rII cannot resolve this properly because the whole image looks a bit soft on the pixel level. This means the lens...

  • If you know that the rays in the extreme corners usually come in on a certain angle, you can shift the position of the lens in relation to the photosite a bit to (partially) compensate for that....

  • I mentioned the stronger vignetting due to the possibly less optimized microlenses for that case, didn't I? And you always have vignetting, but you can opt for the camera compensating for this....

  • You can replace "smear" with "loss of resolution" if you want to be nitpicky, because I have no idea about the (various) optical distortions in place, and hence used "smear" instead of some more...

  • It doesn't. The paper (not the stuff in the link) actually shows a curve of the efficiency. It is certainly possible to influence the form of the microlenses (up to a certain degree), but it is...

  • Btw, there is a paper from CMOSIS about a full frame sensor they made. From the specs the chances are high its the sensor used in the M240. They do talk about microlenses there, but only about...

  • The differences are more likely a result of the decidedly thinner filter stack in the Leicas (0.8/0.9mm vs. ~2mm in the Sonys). See for example...

  • @HowaboutRAW: I'm not so sure about the microlenses. I could imagine the grid being a bit shifted compared to the pixel grid, but formed differently (and yes, I've seen the marketing slides)? A big...

  • If you think they match up, try to process lets say ISO25600 files from the A7s and the A7rII, especially if taken in not-perfect-lighting situations. Also watch out for color degradations (these ...
  • I'd like to see examples of this, please. Maybe to give you advance warning: Low light is my main shooting context, I own an A7s for good reasons and I've put a number of (not only) FF cameras ...
  • My Sony A7s is running ... Android! For most users the UI is the defining trait of what OS is actually running on the device, but you couldn't be more wrong. UIs could be changed, and anyone who ...
  • Sony apparently used a Linux based system on their NEX cameras, and the A7-series (and most likely everything which is Sony-(F)E but alpha and not NEX labelled) runs an actual Android on it. Androi ...
  • Commented on article YI M1 Sample Gallery

    http://link.springer.com/chapter/10.1057%2F9781137340542_1

    Just read the abstract on that page. History repeats itself, and if you look closely, you will see the signs already ...

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