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D800 LV is a two faced beast

d800 live view

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#1 stenrasmussen

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Posted 31 January 2013 - 08:18

Here's how to improve (not make perfect) the LV for manual focus work:
Use Video LV to focus. Better wrt. noise and also the line skipping.
Here are two iPhone 5 shots of the different LV modes. First is Stills LV and the second Video LV.

Attached Images

  • IMG_0278_1200.JPG
  • IMG_0280_1200.JPG

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#2 nfoto

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Posted 31 January 2013 - 09:31

You need to test on a more demanding subject, Sten. This colour checker isn't exacting enough as a focusing target.

It might well turn out that Video LV is even less precise than the ordinary one. Just have a look at the white smudge lower left, which is clearly better delineated in the ordinary LV.
Bjørn

#3 Akira

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Posted 31 January 2013 - 10:26

Sten,
to me, the contours of the grid in the video LV is clearly softer (or even slightly out of focus) than that of the still LV. Maybe you'd better make sure if you didn't mix up these two images....

Edited by Akira, 31 January 2013 - 10:27 .

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#4 Akira

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Posted 31 January 2013 - 10:32

It might well turn out that Video LV is even less precise than the ordinary one. Just have a look at the white smudge lower left, which is clearly better delineated in the ordinary LV.


The lines seen on the patches could be that of the LCD on the camera. In the second (Video) LV, the turquoise and blue patches on the right are better delineated. I would bet that the iPhone was not precisely parallel to the LCD.
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#5 stenrasmussen

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Posted 31 January 2013 - 10:41

The images are not mixed up but I remind you that this is shot handheld with an iPhone in dark conditions. Focus is therefore an issue.
I will use a tripod'ed D3200 outside this afternoon to document any differences. But there is clearly less noise using Video LV.
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#6 Akira

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Posted 31 January 2013 - 10:43

Appriciate your effort, Sten. I'll stay tuned!
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#7 armando_m

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Posted 31 January 2013 - 14:53

Interesting ... I'll give it a try

Regards,
Armando 
 


#8 stenrasmussen

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Posted 01 February 2013 - 08:38

Here are some more controlled test shots.
First one is from outdoors where the exposure is identical.
The second one is from indoors and shows the very different exposed rendering between the two LV modes.
In both shots focus remains exactly the same. All parameters in camera identical.
(Note that the Video vs. Stills images are on opposite sides in the two images).

Attached Images

  • Outdoors.jpg
  • Indoors_whole_LCD.jpg

Edited by stenrasmussen, 01 February 2013 - 08:59 .

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#9 Fons Baerken

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Posted 01 February 2013 - 08:55

iF you take the picture dont forget to shut down the live video monitor
since video uses different settings than still photography does

#10 stenrasmussen

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Posted 01 February 2013 - 09:00

iF you take the picture dont forget to shut down the live video monitor
since video uses different settings than still photography does


I know Fons. The issue here is what is best for manual focusing.
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#11 Akira

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Posted 01 February 2013 - 10:11

Sten, thanks for sharing the further result of your experiment. That said, it still seems to be tricky to judge whether is better. The comparison might be difficult to judge by observing the photographed LCD screens on the PC monitor...

The jaggys of the border between the blue patch and black grid are clear on both LVs.
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#12 Fons Baerken

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Posted 01 February 2013 - 10:46

in practical terms the screen looks better in video mode
in medium to weak light
maybe cause its set using different parameters

#13 stenrasmussen

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Posted 01 February 2013 - 11:24

There is a difference in terms of noise and how it renders. There is no visible difference wrt. the line-skipping (jaggedness).
The settings are identical in terms of camera settings. Nikon must have implemented different processing for the two modes.
In good light there is very little practical difference.
Sub-sampling in Video vs. Stills LV might be the cause of improved rendering in Video LV (difference in aspect ratio).
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#14 stenrasmussen

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Posted 01 February 2013 - 11:26

The jaggys of the border between the blue patch and black grid are clear on both LVs.


That's not jaggies...they're roof tiles. But jaggies do show up in both modes. The easiest is to focus at powerlines, etc.
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#15 Akira

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Posted 01 February 2013 - 14:40

Aha! Thanks for the clarification!
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