Thumbnails of 16:9 images get squeezed vertically and bars.

[leinad]

I noticed that images of a camera where I have set the aspect ratio of the images to 16:9 get buggy thumbnails. It appears as if XYplorer first adds black bars on the top and the bottom of the image to make it a 4:3 aspect ratio, and then squeezes the resulting image into a 16:9 thumbnail.

The original dimensions of the following file are 3648x2052 pixels

scaled to 25 percent.png (685.16 KiB) Viewed 1084 times

And this is the preview

streched_miniview.png (227.9 KiB) Viewed 1084 times

Here's the EXIF data:

EXIF IFD0

Image Description {0x010E} = <SAMSUNG DIGITAL CAMERA>
Camera Make {0x010F} = SAMSUNG
Camera Model {0x0110} = SAMSUNG PL50 / VLUU PL50 / SAMSUNG SL202
Picture Orientation {0x0112} = normal (1)
X-Resolution {0x011A} = 288/3 ===> 96
Y-Resolution {0x011B} = 288/3 ===> 96
X/Y-Resolution Unit {0x0128} = inch (2)
Software / Firmware Version {0x0131} = 907062
Last Modified Date/Time {0x0132} = 2014:05:14 11:17:18
Y/Cb/Cr Positioning (Subsampling) {0x0213} = co-sited / datum point (2)
Copyright Owner {0x8298} = COPYRIGHT, 2009

EXIF Sub IFD

Exposure Time (1 / Shutter Speed) {0x829A} = 1/350 second ===> 0.00286 second
Lens F-Number / F-Stop {0x829D} = 89/10 ===> ƒ/8.9
Exposure Program {0x8822} = normal program (2)
ISO Speed Ratings {0x8827} = 100
EXIF Version {0x9000} = 0220
Original Date/Time {0x9003} = 2014:05:14 11:17:18
Digitization Date/Time {0x9004} = 2014:05:14 11:17:18
Components Configuration {0x9101} = 0x01,0x02,0x03,0x00 / YCbCr
Compressed Bits per Pixel {0x9102} = 29374688/7485696 ===> 3.92
Shutter Speed Value (APEX) {0x9201} = 863/100
Shutter Speed (Exposure Time) = 1/396.18 second
Aperture Value (APEX) {0x9202} = 630/100
Aperture = ƒ/8.88
Exposure Bias (EV) {0x9204} = 0/10 ===> 0
Max Aperture Value (APEX) {0x9205} = 297/100 ===> 2.97
Max Aperture = ƒ/2.8
Metering Mode {0x9207} = pattern / multi-segment (5)
Light Source / White Balance {0x9208} = unknown (0)
Flash {0x9209} = Flash did not fire, compulsory flash mode
Focal Length {0x920A} = 62/10 mm ===> 6.2 mm
Maker Note {0x927C} = ...................................... A lot of data in here
FlashPix Version {0xA000} = 0100
Colour Space {0xA001} = sRGB (1)
Image Width {0xA002} = 3648 pixels
Image Height {0xA003} = 2052 pixels
Related Sound File {0xA004} = RelatedSound
Exposure Index {0xA215} = 1/1
Image Sensing Method {0xA217} = one-chip color area sensor (2)
Image Source {0xA300} = 0x03,0x00,0x00,0x00
Scene Type {0xA301} = directly photographed image
Exposure Mode {0xA402} = auto exposure (0)
White Balance {0xA403} = auto (0)
Digital Zoom Ratio {0xA404} = 0/10 ===> 0
Focal Length in 35mm Film {0xA405} = 35
Scene Capture Type {0xA406} = standard (0)
Contrast {0xA408} = normal (0)
Saturation {0xA409} = normal (0)
Sharpness {0xA40A} = normal (0)

EXIF IFD1

Compression {0x0103} = JPEG compression (6)
Picture Orientation {0x0112} = normal (1)
X-Resolution {0x011A} = 1/1 ===> 1
Y-Resolution {0x011B} = 1/1 ===> 1
X/Y-Resolution Unit {0x0128} = inch (2)
Embedded thumbnail image:

EXIF Interoperability IFD

Interoperability Index {0x0001} = R98
Interoperability Version {0x0002} = 0100

[admin]

This phenomenon has been reported a number of times in the past and never did XYplorer turn out to be the cause.

Please turn off Configuration > Thumbnails > Super-fast thumbnails and see if this changes it. If yes then probably your camera created the black bars in the embedded thumbnails.