Comments on: High Dynamic Range Target, ITI LED Lightbox http://www.imatest.com/2015/09/high-dynamic-range-target-led-lightbox/ Image Quality Testing Software & Test Charts Tue, 06 Jun 2017 17:20:33 +0000 hourly 1 https://wordpress.org/?v=4.8.1 By: norman http://www.imatest.com/2015/09/high-dynamic-range-target-led-lightbox/#comment-40513 Wed, 24 Aug 2016 14:26:12 +0000 http://www.imatest.com/?p=13314#comment-40513 I may have missed this. In cases like this it’s best to send us the image. We should be able to diagnose the situation quickly. I would also like to see the window with the two region selections. In general there is not much room to change the region selection. The fill factor can make a difference if there are edge effects in the image. We can determine this if we see the image.

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By: norman http://www.imatest.com/2015/09/high-dynamic-range-target-led-lightbox/#comment-40512 Wed, 24 Aug 2016 14:23:23 +0000 http://www.imatest.com/?p=13314#comment-40512 There should be no problem at all if there is an air gap between the chart and light box surface.

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By: simon pang http://www.imatest.com/2015/09/high-dynamic-range-target-led-lightbox/#comment-40510 Tue, 23 Aug 2016 22:31:27 +0000 http://www.imatest.com/?p=13314#comment-40510 Hi,

We just bought a ITI Led box and your chart. I’m designing a holder to hold the chart. Can I have air gap between the chart and the illumination area? Or I have to tape the chart completely on the light box? Thanks!

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By: Yan Tao http://www.imatest.com/2015/09/high-dynamic-range-target-led-lightbox/#comment-38288 Wed, 27 Jan 2016 12:09:55 +0000 http://www.imatest.com/?p=13314#comment-38288 hi, we have a problem, if we use the same picture which get from a camera, we just choose different area in Dynamic Range test , but the software give to result,as one give 70db, the other one is 80db. This result makes us confuse, one picture might have one dynamic range, it can’t be change just because we choose areas slighty difference.
How to resolve this situation?
We look forward to your reply

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