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TIFF files with infrared alpha channel not opening


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Hey there,

my colleagues from our Photogrammetry section are wondering, why their TIFFs can`t be openend with Affinity Photo, though they should. The files have 4 channels (R, G, B and Infrared). I´ve copied the following specs from the file informations out of my Adobe Photoshop, probably there is just an issue with the geographic informations the file also is containing. Help would be very appreciated as we are thinking about changing our whole workflow in that section from Adobe to Affinity.

Here´s the file informations:

UltraCam-Lvl03
--------------
CAM_ID: 431S91898X119229-f100 [2]
IMG_NO: 75
RECORD_GUID: 518645de-5ed4-48d0-b898-45e26b6da428
IMG_GUID: 710CFB0D-6F46-443B-87FB-8E3D45411AF0
FILE_GUID: 44638AC4-4193-41D9-BE0C-11A13AD76A1B
LICENSE_ID: 1286746206
SOFTWARE: UltraMap Image Export 29.2.2001.1401
PIXEL_SIZE_WIDTH: 4.000000 [micron]
PIXEL_SIZE_HEIGHT: 4.000000 [micron]
APERTURE: F_5.6
EXPOSURE_TIME: 0.004000000000
HIGH_ISO_MODE_CAPTURE: off
HIGH_ISO_MODE_PROCESSING: off

----- Inner Orientation -----
PRINCIPAL_DISTANCE: 100.500000000000 [mm]
PRINCIPAL_POINT_X: -0.000000000000 [mm]
PRINCIPAL_POINT_Y: -0.120000000000 [mm]
SENSOR_AREA_WIDTH: 68.016000000000 [mm]
SENSOR_AREA_HEIGHT: 105.840000000000 [mm]
-----------------------------

----- Exposure Annotation Data -----
MID_EXPOSURE_CORRECTION: 0.000000000000
FMS_SENSOR_CODE: UCE-M3-f
FMS_CAMERA_PORT: 1
FMS_EXPOSURE_NUMBER: 75
FMS_PROJECT: 7567
FMS_AREA: LOS7_21
FMS_LINE_NUMBER: 1
FMS_SEGMENT_NUMBER: 1
FMS_WAY_POINT_NUMBER: 9
GPS_DATE: 200325
GPS_TIME: 101405
GPS_LATITUDE: N50.721446 [degree]
GPS_LONGITUDE: E010.517328 [degree]
GPS_ALTITUDE: 4665.9 [m]
GPS_POSITION_SOLUTION: GPS
GPS_TRACK_OVER_GROUND: 90 [degree]
GPS_ABOVE_GROUND_LEVEL: 4132.9 [m]
GPS_GROUND_SPEED: 101.2 [mps]
------------------------------------

----- Level-3 Parameters -----
IMG_TYPE: High resolution multi channel RGBI
ROTATION: 270 [degree]
------------------------------------

Edited by danielsantana
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