Using the crop feature, before taking a image...how many megapixels are lost?

Started 2 months ago | Discussions thread
Olifaunt Contributing Member • Posts: 780
Re: nothing mysterious
2

Tungsten Nordstein wrote:

Olifaunt wrote:

rondom wrote:

I checked this in a "Ricoh blind" DNG viewer which is based on dcraw.

for 35mm crop:

3952 x 2624 Pixels (10.37 MPixels) (3:2)

for 47mm crop:

2928 x 1952 Pixels (5.72 MPixels) (3:2)

In crop mode **GR throws away unused data from sensor**

I don't think it throws away unused data.

Here is a GRii DNG taken with 35mm crop option: https://www.dropbox.com/s/vh0oegi65l2dgkj/S0018727.DNG?dl=0

In DxO Photolab this DNG displays the 4928x3264 uncropped image and the full uncropped image is available for editing, even though the attached JPEG (part of the DNG format) that will be displayed by many viewers (including the dropbox viewer) is cropped to 3936x2608.

I tried recovering the cropped areas (dark table, raw therapee and the LR plug-in( and cannot. I wonder if you could show us an uncropped version as jpg, please?

Here are the DNG (same as posted earlier) and the the uncropped version as directly exported to JPEG from the same DNG by DxO Photolab:

https://www.dropbox.com/s/vh0oegi65l2dgkj/S0018727.DNG?dl=0

https://www.dropbox.com/s/xxmwj4fqht0yjel/S0018727_DxO.jpg?dl=0

I remember being surprised when viewing the files in Photolab and seeing the uncropped files because this behavior is different from other editors I have used.

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