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sandro

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Posts posted by sandro

  1. Posted

    5 hours ago, kidzrevil said:

    The profiles I use are standard,portrait & gamma c at default settings with -10 sharpness and +15 Master pedestal. Its not worth touching the contrast settings on the nx1. 

    Why gamma c instead of gamma dr?

  6. Posted

    I'm probably late to the party but did you see that if you're in a dark room in live video preview there's a clear shift in sensitivity while going from 2000 ISO to 2500? It's like something kicks in and you're magically seeing the shadows. It's definitely too high be a 1/3 stop increment. Could that be a sign of NR? 

    Do you guys have the same behavior?

  7. Posted

    Just now, neosushi said:

    But then you're also trading : ergonomics, autofocus, detail, colors, etc...

    And besides the only serious contender personally I think would be the A7S II which is 3 times the price also...

    A6300 is much better in low light and noise from what I've seen. NX1 3200ISO starts be unusable...

  8. Posted

    3 hours ago, Marco Tecno said:

    Unfortunately they are behind the average customer, the mass market, and not the niche one. The NX1 was and is an outstanding product, which for me will be used for years to come, especially if someone could do an intelligent speedbooster adapter to canon and/or nikon lenses. I don't see a reason for buying into another system, since I want both stills and video, I'm not ready to spend more than 4-5k on the whole system (including lenses) and I still think NX1 is vastly superior to the present APSC competitors (A6300, X-T2, D500) and m4/3 ones (GX8, GX85, GH4).

    There's one reason to switch system: low light and NR. The worst from the NX1.

  16. Posted

    2 hours ago, M Carter said:

    Would also explain not seeing the shift with a non-samsung zoom on the camera, if the camera - even on manual - is adjusting exposure (or adjusting the iris??) due to data it's getting from the lens. Seems odd to me, but the NX1 is a very computer-heavy camera.

    This subject gets weirder by the page...

    I never tried zooming with a non Samsung lens since I don't have one but I don't see why it would do it...

  17. Posted

    33 minutes ago, MountneerMan said:

    Ok this is my theory and it is jut a theory at this point because I cannot find any information on the internet to confirm OR disprove it.

     

    Because f-stop = focal length / diameter of the entrance pupil as you zoom the lens the lens needs to change the iris to keep the same f-stop.

    Quote from the Wikipedia page on f-number https://en.wikipedia.org/wiki/F-number

    So assuming you have a 100-200 f4 zoom lens (fully electronic) and you were at 100mm and f/4 then you quickly zoomed to 200mm. the lens would need to detect the new focal length then calculate the diameter of the entrance pupil then adjust accordingly. The few milisec delay is just the camera calculating the then adjusting according.

     

    Can someone please confirm or disprove this theory because I am starting to get frustrated with the lack of information on the internet about this. :confounded:

    That would explain it.

  19. Posted

    18 hours ago, tugela said:

    If everything is on manual, including gain, then zooming out will increase the amount of light on the sensor and increase overall exposure. Converse for zooming in. The video clip apparently has gain on auto, but the response to changes in exposure is not instantaneous, which is why the exposure changes like that. If he zoomed more slowly then you would not notice it.

    But shouldn't that increase stay the same? Instead with the Samsung lens I used it goes back to "normal" after a moment. 

  23. Posted

    50 minutes ago, SMGJohn said:

    From what I have read early on was that 4k is upscaled 2160p and cropped in-camera, this was made from the conclusion that it lacks sharpness and had more aliasing than UHD. 

    Whether this really is the case is debatable because I have no idea how it really works, it could be true line skipping for all I know. 

    When I shoot 2160p or 4k in NX500 I get fine noise grain like in 1440p mode, its just smaller grain which is expected duo to higher resolution. Why is this? I use Kino's Mod Pack 1.62m, was this a standard feature on the NX500 before the hack? I am too lazy to uninstall and reinstall on my vacation just to check it, can any NX500 owner confirm with me if this was the case? 1080p mode has the ugly NR as we know it, hurts me everytime i look at that blue swirling death atoms on high ISO videos shot from NX1.

    LEFT - 1440p mode from NX500 (140mbps) | RIGHT - 2160p mode from NX500 (160mbps)

    vlcsnap-error983.pngvlcsnap-error918.png

    What ISO? But seriously if this is below 6400 the NX1 really sucks in low light... nothing NR off can solve...

  25. Posted

    3 minutes ago, tugela said:

    Kidzrevil mentioned seeing similar things with his Sigma zoom, which presumably would not be operated electronically.

    I think it is just a function of the rapid change in the field of view (with consequent exposure change) and the time it takes for metering to adjust to gain to a different level to compensate.

    IMO you will see it with any camera if gain correction is not instantaneous.

    how can it be if it happens even when everything is all manual? If doesn't have to adjust to anything. 

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