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FORUMS Post Processing, Marketing & Presenting Photos RAW, Post Processing & Printing 
Thread started 06 Sep 2012 (Thursday) 21:32
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LR4.1 imports

 
canon ­ shooter
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Sep 06, 2012 21:32 |  #1

I know when I view image in LCD it may appear brighter than in LR since the JPEG preview makes some corrections. But I notice that some images as they import they turn a little darker as the fully load in LR.
Example one that looks fine in the LCD in LR 4.1 I had to take exposures to +.95 and shadows to +26. Shot was taken in shadows with brighter background

Any suggestions


Jim

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BigAl007
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Sep 07, 2012 06:28 |  #2

During the import phase LR uses the embedded JPEG for the initial preview. once it has been imported LR then generates it's own conversion based on the current applied default settings. When you bring in images this can take a few seconds, especially if you import large numbers, the speed of your computer can also have a significant affect on the speed of preview generation.

One trick I use to grade a large number of images is to have LR generate all of the 100% previews before I start. Although this can take a while it saves having to wait ages for the preview to load each time you go to Loupe view. On my old dual Celeron 1.5GHz 3Gig laptop it can take 20 or 30 seconds for a 100% view to load so it is a significant saving. It's not too bad if I get back from a days shooting I'll import the images when I get home, start the preview generation and then leave it till the morning to do the sort.

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5Dmaniac
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Sep 07, 2012 07:15 |  #3

Do not rely on the LCD screen of your camera - use the histogram instead to judge exposure - it really is the only way.




  
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tonylong
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Sep 07, 2012 09:07 |  #4

One thing that has come up is that the newer generation of cameras have two settings that can make the jpeg "preview" significantly different in terms of brightness than what the Lightroom defaults would render. These settings are HTP (Highlight Tone Priority) which brightens the shadows and midtones, and Auto Lighting Optimizer (ALO) which can brighten the overall image.

These settings are applied to jpegs, as I said, but are ignored by Raw processors other than the Canon Digital Photo Professional. So, it is natural to see a different level of brightness when an image is being loaded into Lightroom. If you look at your camera settings for HTP and ALO and they are "On", turn them off to get a more accurate preview both in the camera and when loading into LR.

Also, Picture Style settings in the camera will affect the previews. For a more accurate preview you can set your Picture Style to Neutral. You can go even farther if you then dial down the Contrast and Saturation settings for the Neutral Picture Style. Or, in Lightroom, you can set the default Camera Calibration Profile (and/or other settings) to something that is more appealing to you.


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Tigerkn
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Sep 07, 2012 09:19 |  #5

Thanks for the HTP and ALO, TonyLong!!!! I will check it out.


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Rimmer
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Sep 07, 2012 10:27 |  #6

canon shooter wrote in post #14957651 (external link)
....
Example one that looks fine in the LCD in LR 4.1 I had to take exposures to +.95 and shadows to +26. Shot was taken in shadows with brighter background

Any suggestions

So... Your camera read the background brightness and underexposed the scene. Assuming that's correct, the adjustments you made would not seem unreasonable.


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tonylong
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Sep 07, 2012 17:06 |  #7

Kevin, make sure and get back to us about the HTP and ALO settings!


Tony
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