December 22, 2014, 10:08:50 AM

Author Topic: 5D Markiii Auto Lighting Optimizer vs Highlight Tone Priority  (Read 12087 times)

East Wind Photography

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Re: 5D Markiii Auto Lighting Optimizer vs Highlight Tone Priority
« Reply #15 on: March 25, 2013, 09:00:02 PM »
If you shoot video though HTP can be a big help when the scene changes.  Though shadow noise is a problem, it's a bit less obnoxious in video as is blown out highlights.

HTP increases the DR if you shoot in JPG.  It underexposes by 1 stop of ISO, then lies about it in the metadata (that's why ISO 200 becomes the lowest setting - if you shoot at ISO 200 with HTP, the camera actually exposes at ISO 100). That 1-stop underexposure preserves a stop of highlights, the camera then applies a tone curve to boost everything but the highlights by 1 stop (meaning a stop more noise in the shadows).

If you shoot RAW, leave HTP off.  You then have latitude to preserve >1-stop of highlights, and can apply your own tone curve.

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Re: 5D Markiii Auto Lighting Optimizer vs Highlight Tone Priority
« Reply #15 on: March 25, 2013, 09:00:02 PM »

brianleighty

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Re: 5D Markiii Auto Lighting Optimizer vs Highlight Tone Priority
« Reply #16 on: March 25, 2013, 09:50:02 PM »
HTP increases the DR if you shoot in JPG.  It underexposes by 1 stop of ISO, then lies about it in the metadata (that's why ISO 200 becomes the lowest setting - if you shoot at ISO 200 with HTP, the camera actually exposes at ISO 100). That 1-stop underexposure preserves a stop of highlights, the camera then applies a tone curve to boost everything but the highlights by 1 stop (meaning a stop more noise in the shadows).

If you shoot RAW, leave HTP off.  You then have latitude to preserve >1-stop of highlights, and can apply your own tone curve.
Thanks neuro. I honestly never mess with curves. I've tried messing with it a few times or with the auto settings in DPP but never really liked the results. I normally just use contrast, highlight or blacks to adjust. Anyone have any suggestions on a tutorial for editing curves in DPP?
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Re: 5D Markiii Auto Lighting Optimizer vs Highlight Tone Priority
« Reply #16 on: March 25, 2013, 09:50:02 PM »