I have noticed that the altitude MSL value recorded in the Meta Data of my Mavic Mini photos is normally way off.  The MSL values recorded in the Meta Data of my Mavic 2 Pro photos is normally spot on.
Has anyone else noticed that their Meta Data altitude values for Mavic Mini photos is way off?

Way off, but I have also noticed that with almost every dji drone it seems to take them an age to get this right and I think it needs to be brought to their notice so hopefully threads like this will help .

hallmark007 Posted at 2-21 16:29
Way off, but I have also noticed that with almost every dji drone it seems to take them an age to get this right and I think it needs to be brought to their notice so hopefully threads like this will help .

Yes let's hope that they fix it soon.  I need the correct altitude for when a  photo is taken to measure distances/lengths of ground objects in the photo by counting pixels.  The other day I had forgotten what height that I was at when I took a particular photo and figured that I could just get it off the Meta Data.  Wrong..... it was over a hundred feet off.

BobWinNV Posted at 2-21 17:02
Yes let's hope that they fix it soon.  I need the correct altitude for when a  photo taken to measure distances in the photo by counting pixels.  The other day I had forgotten what height that I was at when I took a particular photo and figured that I could just get it off the Meta Data.  Wrong..... it was over a hundred feet off.

I had forgotten what height that I was at when I took a particular photo and figured that I could just get it off the Meta Data.  Wrong
Look around for a different Exif reader.
Find one that shows you the Relative Height as well as the Absolute Height.
Then you'll know how high your drone was.

BobWinNV Posted at 2-21 17:02
Yes let's hope that they fix it soon.  I need the correct altitude for when a  photo taken to measure distances in the photo by counting pixels.  The other day I had forgotten what height that I was at when I took a particular photo and figured that I could just get it off the Meta Data.  Wrong..... it was over a hundred feet off.

Probably because the data is taken from the GPS altitude measurement, which is notoriously innacurate. Try Googling 'GPS  altitude' and you will see what I mean. Not much chance that DJI will 'fix' that.

Labroides Posted at 2-21 17:46
I had forgotten what height that I was at when I took a particular photo and figured that I could just get it off the Meta Data.  Wrong
Look around for a different Exif reader.
Find one that shows you the Relative Height as well as the Absolute Height.

A different EXIF reader isn't going to do anything for me.
DJI manages to record the correct height on photos taken with the Mavic 2 Pro so they can do the same with the Mavic Mini.

Geebax Posted at 2-21 17:46
Probably because the data is taken from the GPS altitude measurement, which is notoriously innacurate. Try Googling 'GPS  altitude' and you will see what I mean. Not much chance that DJI will 'fix' that.

If doubt that DJI uses GPS data for that value and if they can record the correct altitude on Mavic 2 photos then they can do it for the Mavic Mini as well.

BobWinNV Posted at 2-21 17:51
A different EXIF reader isn't going to do anything for me.
DJI manages to record the correct height on photos taken with the Mavic 2 Pro so they can do the same with the Mavic Mini.

A different EXIF reader isn't going to do anything for me.
Read my post again.
The data you wanted is stored in the metadata.
You just used an Exif reader that only showed you part of the metadata.

BobWinNV Posted at 2-21 17:53
If doubt that DJI uses GPS data for that value and if they can record the correct altitude on Mavic 2 photos then they can do it for the Mavic Mini as well.

As it happens, DJI do use GPS for the Absolute height , but only for the Mavic 2 using recent firmware.
For all others, DJI still use barometer data converted to a nominal ASL height assuming standard atmospheric conditions.
The result is often +/- 200 feet or more.
It gets confusing because DJI label the field GPS data even though it was derived from barometer data.

Labroides Posted at 2-21 18:04
A different EXIF reader isn't going to do anything for me.
Read my post again.
The data you wanted is stored in the metadata.

Yes I did read your post but as I said in my post, the data it was way off.

Labroides Posted at 2-21 18:07
As it happens, DJI do use GPS for the Absolute height , but only for the Mavic 2 using recent firmware.
For all others, DJI still use barometer data converted to a nominal ASL height assuming standard atmospheric conditions.
The result is often +/- 200 feet or more.

There is the answer to my question.  You see bad data as well.  
Thank you.

BobWinNV Posted at 2-21 18:10
Yes I did read your post but as I said in my post, the data it was way off.

I know you said that.
Everyone that looks at that stuff knows it's been way off for years.
But you don't seem to notice that I gave you the solution to the problem you complained about.

Labroides Posted at 2-21 18:15
I know you said that.
Everyone that looks at that stuff knows it's been way off for years.
But you don't seem to notice that I gave you the solution to the problem you complained about.

So you know of a tool other than ExifTool by Matt Harvey that will extract accurate data for altitude from a DJI Mavic Mini Photo?  
If so please share your knowledge.

BobWinNV Posted at 2-21 18:40
So you know of a tool other than ExifTool by Matt Harvey that will extract accurate data for altitude from a DJI Mavic Mini Photo?  
If so please share your knowledge.

I guess Google doesn't work in your part of the world?

Here's one (of many) for you to try.
http://metapicz.com/#landing
Look in the XMP section and you'll find Absolute Altitude (junk) and Relative Altitude (which is what you were looking for)

Labroides Posted at 2-21 20:37
I guess Google doesn't work in your part of the world?

Here's one (of many) for you to try.

Sorry for your bother but I already had everything plus more with the link that I showed you.
You have wasted a lot of your and my time and have not added anything to the conversation except to answer yes the Mavic Mini Altitude in EXIF (both absolute (MSL) and relative (relative to launch point) are often way off.

Thanks again for trying but you really should can the attitude it doesn't sit well with folks and doesn't do anything good for your image.

Here is an example of what the program that I use for EXIF supplies.
ExifTool Version Number         : 11.88
File Name                       : DJI_0591.JPG
File Size                       : 6.0 MB
File Modification Date/Time     : 2020:02:19 16:50:19-08:00
File Access Date/Time           : 2020:02:21 18:30:28-08:00
File Inode Change Date/Time     : 2020:02:21 18:30:26-08:00
File Permissions                : rwxrwxrwx
File Type                       : JPEG
File Type Extension             : jpg
MIME Type                       : image/jpeg
Exif Byte Order                 : Little-endian (Intel, II)
Image Description               : DCIM\100MEDIA\DJI_0591.JPG
Camera Model Name               : FC7203
Orientation                     : Horizontal (normal)
X Resolution                    : 72
Y Resolution                    : 72
Resolution Unit                 : inches
Software                        : v02.43.0128
Modify Date                     : 2020:02:19 16:50:19
Y Cb Cr Positioning             : Centered
Exposure Time                   : 1/640
F Number                        : 2.8
Exposure Program                : Program AE
ISO                             : 100
Exif Version                    : 0230
Date/Time Original              : 2020:02:19 16:50:19
Create Date                     : 2020:02:19 16:50:19
Components Configuration        : -, Cr, Cb, Y
Compressed Bits Per Pixel       : 3.93715
Shutter Speed Value             : 1/640
Aperture Value                  : 2.8
Exposure Compensation           : -1/3
Max Aperture Value              : 2.8
Subject Distance                : 0 m
Metering Mode                   : Spot
Light Source                    : Daylight
Flash                           : No flash function
Focal Length                    : 4.5 mm
Warning                         : [minor] Possibly incorrect maker notes offsets (fix by 1783?)
Make                            : DJI
Speed X                         : +0.00
Speed Y                         : +0.00
Speed Z                         : +0.00
Pitch                           : -2.50
Yaw                             : -113.00
Roll                            : -0.70
Camera Pitch                    : +20.00
Camera Yaw                      : +2.00
Camera Roll                     : +0.00
Flashpix Version                : 0010
Color Space                     : sRGB
Exif Image Width                : 4000
Exif Image Height               : 3000
Interoperability Index          : R98 - DCF basic file (sRGB)
Interoperability Version        : 0100
Exposure Index                  : undef
File Source                     : Digital Camera
Scene Type                      : Directly photographed
Custom Rendered                 : Normal
Exposure Mode                   : Auto
White Balance                   : Auto
Digital Zoom Ratio              : undef
Focal Length In 35mm Format     : 24 mm
Scene Capture Type              : Standard
Gain Control                    : None
Contrast                        : Normal
Saturation                      : Normal
Sharpness                       : Normal
Subject Distance Range          : Unknown
Serial Number                   : 1SFLG8M0AK0728
GPS Version ID                  : 2.3.0.0
GPS Latitude Ref                : North
GPS Longitude Ref               : West
GPS Altitude Ref                : Above Sea Level
XP Comment                      : Type=N, Mode=P, DE=None
XP Keywords                     : v02.43.0128;0.0.1;v1.0.0
Compression                     : JPEG (old-style)
Thumbnail Offset                : 18432
Thumbnail Length                : 10926
About                           : DJI Meta Data
Format                          : image/jpg
Absolute Altitude               : +677.05
Relative Altitude               : +31.10
Gimbal Roll Degree              : +0.00
Gimbal Yaw Degree               : +2.00
Gimbal Pitch Degree             : +20.00
Flight Roll Degree              : -0.70
Flight Yaw Degree               : -113.00
Flight Pitch Degree             : -2.50
Cam Reverse                     : 0
Gimbal Reverse                  : 0
Version                         : 7.0
Has Settings                    : False
Has Crop                        : False
Already Applied                 : False
MPF Version                     : 0010
Number Of Images                : 2
MP Image Flags                  : Dependent child image
MP Image Format                 : JPEG
MP Image Type                   : Large Thumbnail (VGA equivalent)
MP Image Length                 : 380121
MP Image Start                  : 5943419
Dependent Image 1 Entry Number  : 0
Dependent Image 2 Entry Number  : 0
Image UID List                  : (Binary data 66 bytes, use -b option to extract)
Total Frames                    : 1
Image Width                     : 4000
Image Height                    : 3000
Encoding Process                : Baseline DCT, Huffman coding
Bits Per Sample                 : 8
Color Components                : 3
Y Cb Cr Sub Sampling            : YCbCr4:2:2 (2 1)
Aperture                        : 2.8
Image Size                      : 4000x3000
Megapixels                      : 12.0
Scale Factor To 35 mm Equivalent: 5.3
Shutter Speed                   : 1/640
Thumbnail Image                 : (Binary data 10926 bytes, use -b option to extract)
GPS Altitude                    : 677 m Above Sea Level
GPS Latitude                    : 36 deg 18' 11.74" N
GPS Longitude                   : 115 deg 10' 28.37" W
Preview Image                   : (Binary data 380121 bytes, use -b option to extract)
Circle Of Confusion             : 0.006 mm
Field Of View                   : 73.7 deg
Focal Length                    : 4.5 mm (35 mm equivalent: 24.0 mm)
GPS Position                    : 36 deg 18' 11.74" N, 115 deg 10' 28.37" W
Hyperfocal Distance             : 1.28 m
Light Value                     : 12.3

BobWinNV Posted at 2-21 21:32
Sorry for your bother but I already had everything plus more with the link that I showed you.
You have wasted a lot of your and my time and have not added anything to the conversation except to answer yes the Mavic Mini Altitude in EXIF (both absolute (MSL) and relative (relative to launch point) are often way off.

You have wasted a lot of your and my time and have not added anything to the conversation except to answer yes the Mavic Mini Altitude in EXIF (both absolute (MSL) and relative (relative to launch point) are often way off.
Correction
Bob, you've wasted too much of my time.
I've gone out of my way to answer your questions (a couple of times)

These numbers from the XML data

Absolute Altitude               : +677.05
Relative Altitude               : +31.10
... are DJI's poor attempt to give you an ASL altitude
And an accurate repeat of the altitude figure that would have been on your screen when you took the photo.
Isn't that what you were whinging about at the start of this thread?

Perhaps if you think the numbers are wrong, you don't realise that they are in metres?
I don't know and I don't care.

Thanks again for trying but you really should can the attitude it doesn't sit well with folks and doesn't do anything good for your image.
Did you take offence at my suggestion that you could use Google yourself to find something easy and obvious?

Bob .. there was no "attitude" in anything in my previous posts to you, but there is now.
It comes from making the effort to help people like you.
Your question was properly answered back in post #4, hours ago.

Happy Flying

I have some pictures where the GPS reported altitude (expressed in meters) is off by about 100. Although I feel most of them is quite accurate.

I need to investigate more about the issue.

m80116 Posted at 2-22 03:06
I have some pictures where the GPS reported altitude (expressed in meters) is off by about 100. Although I feel most of them is quite accurate.

I need to investigate more about the issue.

Thanks for the input m80116

Cant understand why some people need to be so High on themselves and absolute ignorant. Its becoming to the point where you can't ask a question here without some self absorbed sarcastic answer.

Visual Air Posted at 2-22 12:55
Cant understand why some people need to be so High on themselves and absolute ignorant. Its becoming to the point where you can't ask a question here without some self absorbed sarcastic answer.

I don't know.  It is sad.

Visual Air Posted at 2-22 12:55
Cant understand why some people need to be so High on themselves and absolute ignorant. Its becoming to the point where you can't ask a question here without some self absorbed sarcastic answer.

You can ask questions any time and I'll gladly go out of my way to help if I can.
Bob asked and was answered with correct information, asked again and again, even wanted me to look things up on Google because he was too lazy too and still can't work out that my answers were correct.

BobWinNV Posted at 2-22 13:01
I don't know.  It is sad.

You know what's sad Bob?
You want others to help you and complain when they go far out of their way in an attempt to help.
All you've said is that the numbers in the Exif are wrong.
You should expect the Absolute Altitude will be wrong but the relative Altitude should be correct.
How about giving me enough details to look into it for you since you don't seem to be able to yourself?

btw .. I'm not bumbling in the dark on this topic.
I've been doing mapping with the drone for a num,ber of years and work with altitudes shown in Exif all the time.

m80116 Posted at 2-22 03:06
I have some pictures where the GPS reported altitude (expressed in meters) is off by about 100. Although I feel most of them is quite accurate.

I need to investigate more about the issue.

You don't need to investigate at all.
It's common and well understood.
I explained it already in this post above:
https://forum.dji.com/forum.php? ... 473&pid=2091505

Labroides Posted at 2-22 20:08
You can ask questions any time and I'll gladly go out of my way to help if I can.
Bob asked and was answered with correct information, asked again and again, even wanted me to look things up on Google because he was too lazy too and still can't work out that my answers were correct.

But thats just it. Your calling people lazy and directly insulting them. It is not nessesary for you act like you are better than everyone else and everyone here is stupid. Suggest keeping your comments to yourself.
If you don't want to offer help without be littling people then don't read the post.
Sorry but I get tired of the constant drama and there happens to be a correct way of coaching and mentoring people without the name calling etc.
Do you have children or a wife and do you behave that way too if they do not understand something the first time?
I will remember never to ask you any question due to your public shaming. Do us a favour have a look at yourself in the mirror and ask yourself if you are perfect. I can assure you that your not.
So if you want to help then help and keep it on topic otherwise simply shut up.