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timparkin

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Posts posted by timparkin

    A7Rii crushes Canon 5Dsr in stills

    In: Cameras

    Posted

    What is the point of the Sony beating the Canon for dynamic range if they both look shit when you dig that far down? Nobody does that in the real world. It is showing some technical aspect of the sensor and nothing more.

    Also the dynamic range of the A7R II only seems to extend that far in the green channel. May as well be black and white. Where's the colour information gone?

    have you see the examples at typical taking exposures? There is still a visible difference. And I'm not sure where you're coming from with the green channel clipping? All cameras block up the green channel last; are you saying the canon looks better in the shadows for colour?

     

     Everyone will pick there own deepest shadow recovery - and it will depend on the subject. 

    But is this anything new? I mean the D800 can do pretty much the same thing vs Canons and that thing has been out for years.

    But which one has better DR, the D800 or the A7Rii?

    D810 can get better shadows than the A7Rii (as will the A7R) but it needs lots of playing to fix deep shadow magenta casts. A7RII is very good at high ISO dynamic range and also is more neutral colour in the deep shadows (hence a quick boost of exposure will look better on the A7RII but spend some time in Photoshop and the A7R D810 can look better

    A7Rii crushes Canon 5Dsr in stills

    In: Cameras

    Posted

    I agree.  Better to wait for dynamic range assessments from more traditional sources... like Andrew.  I've never seen a dynamic range test like the one I tracked down researching this thread.  Would have been nice for the OP to post the pictures with blown highlights and state the fact the A7RII used a different exposure but I guess that wouldn't have been as fun.  I've found two other lengthy threads on the interwebs expressing the same consternation regarding the methodology of this test.

    and yet you still didn't read the article where the exposure difference was explained... 

    If you have a look at the rawdigger comparisons you'll be able to see that had I chosen the same exposure level for the 'base' exposure (the ETTR) the areas of the quarry would have add full clipping in all channels. And if you check the average values of the cliff face as a %ge of the clipping levels you'll see that the Canon and Sony files are fairly similar. 

    A7Rii crushes Canon 5Dsr in stills

    In: Cameras

    Posted

    The highlights in the Sony images are blown.  That's a fail in my book.  I could get nice shadow detail if I blew the sky out on all my pictures/video.  But then my work would look like a lot of stuff you see on the web... crap.  BMPCC, shoot raw, expose to the right, and for goodness' sake don't blow out the sky... unless you do it for an artistic reason.  Properly exposed film keeps the highlights.  Video blows them constantly.

     

     

    sigh - read the article again. Download rawdigger. Check the values in the quarry face, not the sky (this is where the ETTR was done) - the sony file is touching clipping on one green pixel, none of the other channels are clipping. The Canon file is 98% to clipping on one green channel. That's about a 1/10 of a stop difference. Please, please read the article and if you'd like to ask a question fine but don't jump to conclusions (e.g. that the sky was the ETTR point, that the difference between clipping and no clipping is significant (it could be a single unit which is .01 of a percent). 

     

    A7Rii crushes Canon 5Dsr in stills

    In: Cameras

    Posted

    What is this BS?!

    Did anyone even bother to follow the links back to the original "article"?  Here is part of the original article's author's methodology...

    http://www.onlandscape.co.uk/2015/08/sony-a7rii-compared-with-sony-a7r-and-canon-5dsr/

    What?!

    I mean just look at the pictures.  He blew out the sky in the two Sony shots and retain information in the sky in the Canon shot and then went and compared shadows.  Umm... why not mentioned the blown skies in the Sony pictures?  What a pile of BS.  Just do a proper test and get back to us with proper results.

    If you check the raw files using rawdigger rather than just using Lightroom (which will be affected by white balance etc) then you'll be able to see. The links to the rawdigger screenshots are in the post. 

    I don't think dynamic range is the be all and end all of things, but being able to push the shadow detail (perhaps along with overall exposure) does make for a more convenient workflow than having to mess around with multiple exposures or gradual ND filters.

    Canon probably wouldn't pick up so much heat over this if not for just how bad their cameras perform in this regard. It's one thing for Sony and Samsung's sensors to be outperforming them; it's another thing entirely when even the various m4/3rds sensors do much better.

    It's not the be all and end all which is why I have a Canon 5DSr as well and if you people had read my review of that they would see what I think of it.. 

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