Här är metadata för de två bilderna (efter, resp, före, via ExifTool)
RMBP:~ richardr$ exiftool /Users/richardr/Desktop/7845cd4f654491c160240d3834adf6b2.jpg
ExifTool Version Number : 9.96
File Name : 7845cd4f654491c160240d3834adf6b2.jpg
Directory : /Users/richardr/Desktop
File Size : 131 kB
File Modification Date/Time : 2016:07:04 10:26:43+02:00
File Access Date/Time : 2016:07:04 10:54:06+02:00
File Inode Change Date/Time : 2016:07:04 10:26:47+02:00
File Permissions : rw-r--r--
File Type : JPEG
File Type Extension : jpg
MIME Type : image/jpeg
JFIF Version : 1.01
Resolution Unit : inches
X Resolution : 72
Y Resolution : 72
Exif Byte Order : Little-endian (Intel, II)
Image Width : 1600
Image Height : 1067
Encoding Process : Baseline DCT, Huffman coding
Bits Per Sample : 8
Color Components : 3
Y Cb Cr Sub Sampling : YCbCr4:4:4 (1 1)
Image Size : 1600x1067
Megapixels : 1.7
RMBP:~ richardr$ exiftool /Users/richardr/Desktop/_MG_2791.jpg
ExifTool Version Number : 9.96
File Name : _MG_2791.jpg
Directory : /Users/richardr/Desktop
File Size : 123 kB
File Modification Date/Time : 2016:07:04 09:57:14+02:00
File Access Date/Time : 2016:07:04 10:54:47+02:00
File Inode Change Date/Time : 2016:07:04 09:57:14+02:00
File Permissions : rw-r--r--
File Type : JPEG
File Type Extension : jpg
MIME Type : image/jpeg
Exif Byte Order : Little-endian (Intel, II)
Quality : 60%
IPTC Digest : 00000000000000000000000000000000
Profile CMM Type : Lino
Profile Version : 2.1.0
Profile Class : Display Device Profile
Color Space Data : RGB
Profile Connection Space : XYZ
Profile Date Time : 1998:02:09 06:49:00
Profile File Signature : acsp
Primary Platform : Microsoft Corporation
CMM Flags : Not Embedded, Independent
Device Manufacturer : IEC
Device Model : sRGB
Device Attributes : Reflective, Glossy, Positive, Color
Rendering Intent : Perceptual
Connection Space Illuminant : 0.9642 1 0.82491
Profile Creator : HP
Profile ID : 0
Profile Copyright : Copyright (c) 1998 Hewlett-Packard Company
Profile Description : sRGB IEC61966-2.1
Media White Point : 0.95045 1 1.08905
Media Black Point : 0 0 0
Red Matrix Column : 0.43607 0.22249 0.01392
Green Matrix Column : 0.38515 0.71687 0.09708
Blue Matrix Column : 0.14307 0.06061 0.7141
Device Mfg Desc : IEC
http://www.iec.ch
Device Model Desc : IEC 61966-2.1 Default RGB colour space - sRGB
Viewing Cond Desc : Reference Viewing Condition in IEC61966-2.1
Viewing Cond Illuminant : 19.6445 20.3718 16.8089
Viewing Cond Surround : 3.92889 4.07439 3.36179
Viewing Cond Illuminant Type : D50
Luminance : 76.03647 80 87.12462
Measurement Observer : CIE 1931
Measurement Backing : 0 0 0
Measurement Geometry : Unknown
Measurement Flare : 0.999%
Measurement Illuminant : D65
Technology : Cathode Ray Tube Display
Red Tone Reproduction Curve : (Binary data 2060 bytes, use -b option to extract)
Green Tone Reproduction Curve : (Binary data 2060 bytes, use -b option to extract)
Blue Tone Reproduction Curve : (Binary data 2060 bytes, use -b option to extract)
DCT Encode Version : 100
APP14 Flags 0 : [14], Encoded with Blend=1 downsampling
APP14 Flags 1 : (none)
Color Transform : YCbCr
Image Width : 1600
Image Height : 1067
Encoding Process : Baseline DCT, Huffman coding
Bits Per Sample : 8
Color Components : 3
Y Cb Cr Sub Sampling : YCbCr4:4:4 (1 1)
Image Size : 1600x1067
Megapixels : 1.7
RMBP:~ richardr$