August 14, 2015 at 11:35AM

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Small HD 502 Monitor

I can't find much discussion about the 502 on the web, so hopefully there is someone out there who may have some possible solutions to my problems:

1) When I use the screenshot function on the 502 monitor and then upload that image onto my computer, it is stretched to the point where you can hardly tell what the original image was. Any thoughts on how to tell the 502 not to stretch the screengrab?

2) The picture on the 502 (transmitted via HDMI from my GH3) is considerably darker/more contrasty than the image on my GH3. I shoot as flat as I possibly can, and the GH3 monitor does a better job showing that than the 502. I don't have any LUTS currently being used, so should't the image be exactly the same on both monitors?

Thanks!

Gabe

7 Comments

You have to calibrate your 502 monitor to either match your GH3 camera or match the footage your GH3 captures.

I've had to go through calibration testing with every monitor I've ever owned. ( right now everything is calibrated to my GH4 camera )

August 14, 2015 at 4:32PM

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Guy McLoughlin
Video Producer
30851

Thanks Guy! Does calibration entail importing a LUT that mimics the GH3 image? Or is it an internal process?

Gabe Reuben

August 15, 2015 at 10:25AM

With is it calibrated to your camera?
Shouldn't it be calibrated to true color (or as cose as you can get)?
In other words: use a calibration sensor to calibrate the monitor of your editset first... (Or do I misunerstand what you are saying?)

WalterBrokx

August 17, 2015 at 7:37AM

>>>Does calibration entail importing a LUT that mimics the GH3 image? Or is it an internal process?

Since the GH3 does not support any LOG color profiles there's no point in applying a LUT when calibrating your monitor. Set your monitor to it's REC 709 mode. ( most monitors have this by default )

Next, if your camera has a SMPTE color bar generator ( the Panasonic GH4 does ) turn this on and use the following guide to adjust your monitor's color controls to calibrate it to your camera...

Color Bars and How To Use ’em
http://goo.gl/fWlvWg

If your camera does not have a SMPTE color bar generator ( the Panasonic GH3 does not ) then you can use a color chart target to try and manually adjust the image your monitor produces to match the video your camera shoots. You will need a color chart like this one...

DGK Color Tools WDKK Waterproof Color Chart
http://goo.gl/JSsr0S

First adjust your camera so that it records the image you want. You confirm the captured image with your video editing set-up. ( i.e. choose a camera profile, then adjust it's settings for things like contrast, color saturation, etc... )

Once you are happy with your camera settings then aim your camera at a properly lit color chart, and adjust your monitor settings until your monitor fairly closely matches the color and contrast you are seeing with your video editing set-up. If you get this right, you should now be able to properly preview the image your camera is actually recording with your monitor. ( i.e. what you see on your monitor should match what you see on your video editing set-up )

Keep in mind that you are calibrating for a "neutral" image, so any LUTs or FilmConvert color processing you apply to your recorded video happens after this. ( if your monitor supports LUTs you could try applying it and see how closely it matches your recorded video with the same LUT applied, but the results may be a little unpredictable when working with REC 709 recorded video, RAW or LOG video would be a different story )

August 15, 2015 at 4:40PM

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Guy McLoughlin
Video Producer
30851

Well, the brightness settings on both screens will probably differ.
I'm not familiar with the GH3 screen, bot my experience is that camera lcd are often set pretty bright.

Guy suggests to calibrate the 502.
I would contact SmallHD to check whether you need to calibrate it. (Since it is a monitor you can load LUTs to, it would be really essential that it displays the image correctly in the first place.)
Maybe the GH3 screen is 'wrong', lthought that is what you are used to.

August 17, 2015 at 7:33AM

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WalterBrokx
Director, DOP, Writer, Editor, Producer
8963

Every monitor need to be calibrated if you want any kind of accuracy from them. This is the whole reason why most professional cameras include a SMPTE color bar generator so that you can use it's output to properly tune your monitor.

Also, monitor LUTs are meant to be used when shooting LOG or RAW video formats, NOT for the standard REC 709 format.

Guy McLoughlin

August 17, 2015 at 9:20AM

>>>With is it calibrated to your camera?

Using the SMPTE color bar generator built in to my GH4 camera, I go through the normal monitor calibration process ( http://goo.gl/fWlvWg ) to tune my monitor to the actual video signal my camera outputs. Pretty much every professional video camera made has a SMPTE color bar generator for the sole purpose of calibrating your monitor correctly for the actual camera you are using.

>>>Shouldn't it be calibrated to true color (or as cose as you can get)?

There is no "true color" output by anything. What you get is the factory default color that is probably a good starting place, but you then have to adjust ( or calibrate ) your monitor for the actual video signal your camera outputs to get the best possible display setting.

This monitor image calibration process would be equivalent to calibrating your audio recording gear using the 1 kHz test-tone that is built into almost every professional audio mixer, as it's the only way to be 100 percent certain that the output signal is being interpreted correctly.

August 18, 2015 at 2:04PM

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Guy McLoughlin
Video Producer
30851

Having the same stretching issue with my screen grabs. Shooting with the Sony F55. Did you ever figure out how to fix that? It seems just like a aspect issue, but I don't see any settings in the monitor to adjust that.

October 21, 2015 at 10:05AM

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Tiffany Murray
Camera Assistant
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