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nikos

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Posts posted by nikos

    Canon XC10 versus Sony RX10 III. The Canon is underrated!

    In: Cameras

    Posted

    Hey Andrew,

    great review but I would like to correct something...

    you wrote "In full HD you get proper tracking and object detection plus touch-screen AF. All this gets disabled in 4K and sometimes the camera will put the background in focus and not the intended subject. It can be hard to coax it in 4K without the touch AF."

    this is not true. The touch AF works in 4k. It is disabled only if you enable the rolling shutter reduction mode. If you disable the rs reduction it works perfect.

    Thanks again for the review.

     

    32 minutes ago, Franz Schuier said:

    I used the xc10 for half a year on a lot of jobs. Daylight or sufficient indoor light its great, but with less than a lot light it felt like a ENG cam.
    Still a very good cam for some jobs, think documentary/TV run and gun over daytime, have a light with you if there is just the slightest chance of
    having to film in dim light (happend to me when we entered a barn with no light on a shoot)

    In hd maybe but there is no noise up to 5000iso in 4k.

    Not bad...

     

    3 hours ago, tugela said:

    Keep in mind that these are supposed to by hybrids, not pure camcorders. The XC10 is a piece of crap for stills. If you were to go out and have the option of carrying one camera for all of your imaging, the RX10III does it all, whereas with the XC10 you would need at least another camera.

    That was always the big problem with the XC10. The image quality was ok in terms of color, and fine for HD, but resolution not so much when you were looking at 4K. The stills capability is a sad joke. You also require relatively expensive media to access the advanced end of the video spectrum, and, with all due respect to Andrew, having a giant loupe attached to the thing is awkward.

    If you want a one stop shop and you are traveling/hiking/generally mobile, the RX10III is the better camera.

    I am still looking to find out what is going on with the resolution in 4k. I think there is a loss in resolution in c-log that dose not exist in standard profile.

    But you are wrong about the mobile run and gun shooter. xc10 is far superior because it has very good, actually excellent image stabilization for video. This is one of the big thinks in xc10 and it is surprisingly good.

    Sony A6300 review (rolling) - Striking image but nagging issues

    In: Cameras

    Posted

    6 hours ago, Andrew Reid said:

    Talking about Special Purposes.... how about being the only $1000 camera with Super 35mm 4K recording, 13 stop dynamic range with LOG, small file sizes, built in EVF, 120fps in full HD and the best autofocus system under the $6000 1D X Mark II pro DSLR.

    We know all the specs.

    But now a scientific test from EBU found "Resolution at UHD is only adequate, but aliasing is unacceptably high" and "Noise levels are consistently higher than acceptable, and noise reduction is too ineffective to improve things adequately." 

    You have the a6300, do you agree with the ebu comments?

     

    5 hours ago, TheRenaissanceMan said:

    Besides the Log/DR, doesn't the NX1 have all of that? And very good image quality in S35 1080p with near-global shutter?

    Plus image stabilization and real 30min recording.

    But no, the dynamic range of NX1 is not 13 stops (not even 11 I think).

    Sony A6300 review (rolling) - Striking image but nagging issues

    In: Cameras

    Posted

    Alan Roberts testing for EBU....

    However, the camera fails expectations in several ways. Although the sensor dimensions considerably exceed the requirements of both HD and UHD, the scaling to produce HD and UHD images is unsatisfactory. Resolution at UHD is only adequate, but aliasing is unacceptably high. Similarly, at HD the aliasing is sufficient to cause problems in low bit-rate coding. 

    The dynamic range is about 9 stops in standard ITU 709 mode (without knee), 11 stops in S-Log 2, 13 in S-Log 3. This is unsurprising since the camera uses only 8-bit recording.

    Noise levels are consistently higher than acceptable, and noise reduction is too ineffective to improve things adequately. Only at ISO100 or ISO200 could the camera qualify for HD Tier SP, using EBU R.118 requirements. 

    The sensor is evidently scanned, the so-called ‘rolling shutter’ effect. Rotating motion is very poor. 

    This camera is not suitable for use in general broadcasting, apart from Special Purposes where its physical size or shape makes it uniquely suited to a particular type of shot.

     

    http://www.newsshooter.com/2016/03/31/newsshooter-sony-a6300-ebu-lab-test-by-alan-roberts-surprising-results-not-suitable-for-use-in-general-broadcasting/

     

     

    Canon xc10 c-log resolution

    In: Cameras

    Posted

    4 minutes ago, Ebrahim Saadawi said:

    Try applying a sharpening filter in post-production to the original XF-AVC C-LOG files until they give the same ''resolution'' as Standard and you'll see how it works. 

    Even with 0 sharpening at Standard profile there's still some compared to Canon LOG, which completely, removes any kind of any digital sharpening. Magic Lantern has a ''Zero Digital Sharpening'' menu item that has the same effect (lower sharpness than turning it to zero on the Standard profiles, so Canon do give a tiny bit even at zero, but not in C-Log). 

    Resolution: How much information there is in the image
    Sharpness: How emphasized the edges of that information are

    While they are technically un-related, perceptually, higher sharpness gives the illusion of higher resolution, and in some cases it does an amazing job at that.

    Just find the look you prefer and shoot with that.

    Got it!

    thank you very much, I will try it.

    (although In ebu document says that there is less resolution in c-log)

    Canon xc10 c-log resolution

    In: Cameras

    Posted

     

    Yes hmcindie, you are absolutely correct.

    The standard setting in look1 is sharpness +3.

    I  changed it to 0 and the noise gone.

    Here is a new grab in Look1 with sharpness in 0.

     

    4knoiseoff_zpszxhwu1nr.png

    So now the real question.

    Why there is less resolution in c-log?

    Is this only in xc10? (haven't seen any comment  about c100)

     

    Canon xc10 c-log resolution

    In: Cameras

    Posted

    Reading EBU xc10 tests found that according to Alan Roberts measurements c-log has less resolution than look1 (standard look)

    Trying to test it in my xc10 I found that there is a loss in resolution going from standard profiles to c-log but also I found a weird "noise" in look1. 

    c-log grab from davinci resolve 4k timeline (crop).

    pnx3qHMYp

     

     

    look1 (standard) grab from davinci resolve 4k timeline (crop).

     

    pl33OkDhp

    resolution is better in look1 but is this "noise" acceptable?

    4k 305mbp 500iso f5,6 25p(Pal) exposure a bit to the right. 

     

    4kclog_1.1.1.bmp

    Did a test with a bit more light.

    c-log 500iso f4

    pmq2Mygtp

     

    look1 500iso f4

    pm7zOu2Pp

    Resolution is better in look1 but there is still "noise"...

    Any thoughts? 

     

    Best high frame rate video camera?

    In: Cameras

    Posted

    I'm looking for a camera that can sustain a high frame rate for a prolonged period of time and is self contained (no external power, etc) for recording and analyzing the gait of fast moving animals (think cheetahs and greyhounds.... reaching 30mph and up in only a few stride lengths).  Being capable of reasonably autofocusing would be ideal, since I'd like to be able to hand the camera off to novices at times.

    Is the A7SII the best option at this point with 120fps at 1920x1080?  Would I be better off looking at a panasonic camcorder?  Something completely different?

    Thanks

    100fps are adequate for 2d kinematic gait analysis of walk trot or gallop in small and large animals.

    i am using a Samsung nx1 in dogs with great results. Auto focus of this camera is great but useless in gait analysis studies. 

     

    Samsung NX1 macro slow motion

    In: Cameras

    Posted

    Thank you for the comments,

    actually the focus was not easy with just a manfrotto monopod, but at f8 I thought that I would have a larger dof.

    Actually the ant was almost in focus but the red flower a few mm in front of it was out of focus.

    this zeiss 35-70 f/3.4 is a great lens and a good match to the sigma 18-35 for the nx1.

     

     

    Speed Booster?

    In: Cameras

    Posted

    New version of rj Nikon to mft is fine. worth every penny. no blue spots.

    I have both rj and metabones, I would suggest bmpcc specific metabones speedboster but new version of rj is fine. 

    Speed Booster?

    In: Cameras

    Posted

    the rj lens turbo is Nikon to mft(bmpcc) or ef to mft.

    With rj you need a second adapter for c/y lens. (a c/y to Nikon f adapter)

    I don't like to stack adapters.

    Buy the c/y metabones to mft and you will be fine.

     

     

     

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