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MattH

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Posts posted by MattH

  1. 12 hours ago, Swiss said:

    I'm thinking about switching from my bmpcc to the a6300 for 4k, slow mo and low light. I have a question about adapters. If i use my sigma 18-35 nikon mount and my sigma 10-20 nikon mout with a speedbooster nikon to sony e like this one for example http://www.ebay.com/itm/Focal-Reducer-Speed-Booster-Adapter-Nikon-F-mount-G-AF-S-lens-to-Sony-NEX-A6000-/151657409349?hash=item234f7c6b45:g:XMQAAOSw-jhT~tOR Will it vignette on wide side with both of my lenses ? Thanks

    Those are both apsc lenses so I dont think it would make much sense to get a focal reducer/speed booster. It would definitely vignette at the wide end.  You just need a regular smart adapter.

    15 minutes ago, araucaria said:

    Bumbumbummer... It says that 1080p 120fps is cropped (he says 2x crop) as well as 4k 30fps

    I wonder if he means 2x crop of full frame or 2x crop of apsc.  The former would be mft size. The latter would be 16mm size.  I think he meant the latter.

    Good for a free zoom I suppose.

  2.  

    If GH5 did transition over to a S35 sensor. It would be great if they can do an mft mode where the sensor crops to mft, to utilize mft lenses. Then you'd have use of both systems MFT and S35. Then mft lenses won't become obsolete, cool idea if this happened.

    I certainly wouldn't complain.

  3. Panasonic are forever playing catch up on specs as they can't compete on a level playing field with the smaller sensor.

    GH5 should start the transition to Super 35mm.

    Otherwise it will have to be seriously impressive to lure us away from Sony (raw, ProRes, 10bit, 120fps 4K) or to maintain any kind of uniqueness.

    And make all their lenses obsolete?  I can't see that happening.  It would be nice just to have a multi aspect sensor like the GH2 with no crop for 4k.  That would be a 1.8/1.9 crop and still alow their lenses to be used.   There would still be pleanty of options to entice:  Global shutter, 10 bit all I internal/ raw.

  4. I empathise with your dilemma.  Panasonic currently have the best budget 4k options.  (Not sure why you are looking at opymus if one of your priorities is video.) For the record I do not care about 4k video for 4k output.  I care about it for good quality 1080p output.  What we don't know is if panasonic will come out with a 4k camera that doesn't crop. The crop makes native 4/rds lenses narrow.  I also dont like the thought of lenses with large narural distortion that digitally corect.  Maybe that doesnt make sense, but for some reason the idea doesn't sit well with me.  The 12-35 2.8 looks a nice lens but it is expensive.  Is it realy worth it for a system that can only be 2x crop maximum?   I would say at the moment, the best future safe budget system, If you don't mind using manual lenses, is the GH7, cheap speedboster and full frame manual lenses in nikon mount.  That way your lenses are garanteed to be usefull on anything.  My only issue with this setup is that full frame lenses are big. And there dont seem to be any good ultra wide options.

    This is the reason that I have been waiting for sony to bring out a 4k apsc mirrorless. But they have been dragging their feet so far. Probably for a few reasons begining in FS.  hopefully I dont have long to wait. and hopefully there wont be a massive crop.  Even though I think panasonic 4k is a cleaner image than sony 4k, Id rather have a compact apsc system for photography.

    If cannon eos m had 4k I would have got that long ago because the native lenses are great and fairly cheap. But I doubt they will ever have 4k.  at least not in the next 10 years.  They just wont undermine their cinema line.

    Maybe I have just thrown up more questions than answers, but hopefully you will find some use in my post.

  5. Maybe it is the noise, but the besides the look, film seems to have something that makes subjects come alive.  As you have said in the youtube comments, Gunpowder jumping is the obvious example. But also in the shot of yourself at the end.  The film shot would look great cut into a home movie reel or music video compared to the sony where you just look bored.

  6. Correct. When I watched a movie (Netflix) the first time at the gf's place, I was really irritated by the TV settings. It was a 50" Samsung LCD with every "image enhancing feature" turned on, so it was oversharpened, oversaturated and calculated a load of in-between images to create a smoother image - or exactly the effect you described above. The weird part was, she didn't even notice it until I pointed out how much different it looks on my plasma TV with everything turned off and more conservative image settings.

    It's kinda interesting how we obsess about image quality and motion cadence, yadda yadda, when most consumers can't even see a difference.

    It varies. There are people who actually cant see the difference, like people who cant tell the difference between SD and HD. I call them blind, or at the very least imperceptive.  Then there are people who know something is different but don't know what it is.  I asked my laymen friend how he was liking his massive new tv.  He looked sheepish and said 'It's ok, theres just one annoying thing, It makes everything look like a cartoon" . I turned off all the bulshit enhancers and turned the settings down to medium and he was much happier.

  7. I laughed and then frowned when I read this. Nikon's F mount is their highest end strength for the company and the one keeping the company together, achieving higher sales than anything from Nikon and most other mount from all manufacturers. F mount is their most valuable resource and it's going places. 

    'It's not going anywhere' - as a figure of speach - doesn't mean the same as 'it's not going places'. It means 'it's here to stay':

    The opposite of NX mount. :)

  8. Reading the other thread and this one I am now pretty convinced that option 1A will be taken.  The current systems are too well established and changing them will just confuse things.   One big advantage for E mount is that you can use virtually any manual lenses.  An advantage for the consumer, but would nikon see it as an advantage for themselves?  You might think flexibility would encourage customers to the system.  It would with me, But from nikons perspective they are probably more comfortable locking people into nikon lenses.   The A7 cameras and FE lenses are already at the stage where there isn't much of difference between them and a DSLR in size. They aren't exactly pocketable.  So really theres no big disadvantage to having an F-mount mirrorless.  In fact this rumor apears to be on the money: http://nikonrumors.com/2015/04/20/new-nikon-full-frame-mirrorless-camera-on-the-horizon.aspx/

    Also, a good thing about f-mount for a hybrid camera is that there would be plenty of room to integrate behind the lens filters.

    But thinking again about the NX-mini lenses, perhaps the primes could be rehoused in a recessed configuration which would make them look like body cap lenses.

  9. Nikon have 3 main options. With respect to the alleged take over of Samsung.

     

     

    Before we look at the options let’s just summarise Nikon’s and Samsung’s current systems:

     

    Nikon F- mount.  A very long running mount with a 46.5mm flange focal distance. For 135 format (full frame) and APS-C sensors. This clearly isn’t going anywhere.

     

    Nikon 1 mount.  With a 17mm flange focal distance designed for one-inch-type sensors.

     

     

    Samsung NX mount.  25.5mm flange focal distance designed for aps-c sensors.

     

    Samsung NX mini mount 7.5mm flange focal distance designed for one-inch type sensors.

     

     

     

    First lets look a the possibilities for one-inch-type systems.  I was first thinking that NX-mini lenses could be adapted for Nikon 1, but after checking the flange focal 

    distances it seems that this will not be possible.

     

    A. Continue With Nikon 1 mount and discard nx-mini mount and lenses. likely.

     

    B. Take on the NX-mini mount to utilise the lenses and provide an adapter to use Nikon 1 lenses. I think this is unlikely because there are only 3 NX-mini lenses and

         the Nikon 1 system is quite established. Although this would be a shame in the long run because Samsung sure beat them when it comes to compactness.

     

    C. Discontinue one-inch-type system.

     

     

    Now for the main options.

     

    1. Discard NX mount and lenses completely and just plunder the technology. Probably keeping Nikon-1 as the primary compact system.

     

    2. Take over NX mount, simply re-branding the lenses. And creating a smart adapter for F-mount lenses.  The NX flange is awkward but Nikon flanges are long anyway and there wouldn’t be much point making a new aps-c mount.  At this point they could either keep Nikon-1 and have 3 parallel systems or discontinue Nikon-1 to have two systems.

     

    3. Create a new short flange full frame compatible mount to compete directly with Sony E-mount.  They could then provide smart adapters for existing NX-mount and F-mount lenses. And posibly create new full frame mirrorless lenses.  In this case they would probably keep a one-inch-type system for compactness.

     

  10. If you shoot magic lantern with 2.35:1 aspect ratio the rolling shutter on the 5DMK3 is under 14ms. I shoot 2.35:1 and crop to 2.39:1 because there's a a couple of dodgy lines at the top and bottom of the frame.

    Thats the same skew perceptively as 20ms in 16 by 9.  A slanted lamp post doesn't get less slanted if you chop the top and bottom off the image.  The only exception to this is if you are viewing on a native 2.35:1 screen.  Though 20ms is better than 30ms for sure.

  11. Maybe if the film was digitized and encoded to 8 bit compressed web delivery.

    All films you see on tv or blue ray fit that description so it actually isn't as sarcastic as you intended.

    The fact is, that in this comparison, the C300 ii has way more of a video look, by far!

  12. Has nobody else seen what I saw in that article?:

    "The camera quickly shifts from 35mm full frame to 35mm cine at the push of a button. Full frame is HD; Super 35 goes up to 4K."

    So it isn't really a full frame video/cinema camera (and neither would a theoretical Panasonic version).   It's native 4k at 1.5 crop which is good, but there are other options for super 35.  For example, the current GH4 with a speed booster.  Reading that fact makes this camera less exiting, but - on the positive side - something I can forget about.

  13. The optical low pass filter that's designed for a stills camera (in this case a 24mp stills camera) has no effect on video images. Not a deal at all not to mention a deal breaker. Having moire/aliasing will only depend on the sensor quality and how sophisticated the downscaling algorithm. The OLPF is a stills oriented spec as these filters aren't designed for the video output at all, that's why we have to buy video-specific after-market OLPFs for Canon DSLRs even when the cameras have ones for stills. Lots of cameras with a stills OLPF that have video moire and lots of cameras without an OLPF with no video moire. Totally irrelevant. 

    Not necessarily.  There is such thing as cumulative error.  A relatively small example of moire when viewed at 100% could manifest as a bigger example when downscaled and could be visible even when viewing full screen.  To say that a stills OLPF has no effect on video and is totally irrelevant is a false statement.

  14. As I predicted, the rolling shutter skew has been greatly reduced.  No way that is 30ms like the original A7s.   Has to be at most 8.3 milliseconds mathematically.  It looks even less.  I'm still dubious about the overall look though.

    I take it back. Looking at other clips, the RS still looks shitty.  Sony were lying when they said the sensor reads out 120 times a second.  If they meant in crop mode then they should have specified the crop.  Otherwise you could say it has a 0.001ms readout speed then turn round and say its only for a crop of 1 pixel.

  15. One thing I wish the A7R2 had was a 48p 1080 recording option.  Let me elaborate..

    Normally I want to shoot at 25p in 4K for a cinematic look.  But occasionally if I want to shoot something in slo-mo I'll go down to 1080p so I can capture a clip at 50p, which allows me to slow it down to half speed and have the framerate match the rest of my footage.

    However tonight I ran into a problem with this approach.  I live in North America (LA) and thus our fluorescent lights run at 60Hz.  When shooting inside my friend's house I saw a super noticeable strobing effect on all the footage I shot in his kitchen where the fluorescent lights are.

    The solution of course is for me to shoot in NTSC at 24p, which would be fine for 4K, but whenever I want to shoot a slo-mo clip I'm now shooting at 60p, which does not divide into 24 evenly, creating some noticeable transcoding artifacts when you try to output the footage at 24p.

    Since the camera can obviously shoot at 50p or 60p in 1080, why not give us the option of shooting at 48p so we have even multiplier of 24?

    Apologies if I missing some obvious solution to this problem.. help me out here

    Would shooting at 48p solve the flickering issue?  I doubt that it would.   Just shoot 60p and conform to the 24p timeline as hmcindie said.  The only difference will be that it is slightly slower slow motion.

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