Mavic 4 Pro Camera -Focus Issues

[Skywhisperer]

My Mavis Pro is less than a month old. I immediately began to notice when depressing the camera button halfway, that it appeared not to lock focus. This is in autofocus mode, although it began doing the same thing in manual mode. The drone fly's great and the video is amazing. I have uploaded two pictures, one of a new construction near my home, which is acceptable, F.2.8 / 28mm/ ISO100. The other was taken today, F2.8 ISO 100. In this phot the focus is way off. Any thoughts? View attachment post-2.jpgView attachment post1.jpg

 

[Filmarik]

My Mavis Pro is less than a month old. I immediately began to notice when depressing the camera button halfway, that it appeared not to lock focus. This is in autofocus mode, although it began doing the same thing in manual mode. The drone fly's great and the video is amazing. I have uploaded two pictures, one of a new construction near my home, which is acceptable, F.2.8 / 28mm/ ISO100. The other was taken today, F2.8 ISO 100. In this phot the focus is way off. Any thoughts? View attachment 187595View attachment 187598

The first photo looks sharp in the foreground omly the trees look smudged. The machinery looks ok too. Not sure how that happened but it looks to me more like some kind of weird in-camera processing error rather than focusing issue.

 

[Meta4]

My Mavis Pro is less than a month old. I immediately began to notice when depressing the camera button halfway, that it appeared not to lock focus. This is in autofocus mode, although it began doing the same thing in manual mode. The drone fly's great and the video is amazing. I have uploaded two pictures, one of a new construction near my home, which is acceptable, F.2.8 / 28mm/ ISO100. The other was taken today, F2.8 ISO 100. In this phot the focus is way off. Any thoughts?

If it was a focus issue, the things behind the trees wouldn't look sharp.
If you are getting more shots like this, I'd suggest using the 25 MP mode and see how that handles things.
The 100 MP mode doesn't really add anything positive but maybe it's the issue.
The camera is outstanding for even fine detail in 25 MP mode.

 

[GFields]

Do you have the aperture set to auto as well?

 

[Filmarik]

If it was a focus issue, the things behind the trees wouldn't look sharp.
If you are getting more shots like this, I'd suggest using the 25 MP mode and see how that handles things.
The 100 MP mode doesn't really add anything positive but maybe it's the issue.
The camera is outstanding for even fine detail in 25 MP mode.

Is that what 100MP photos from M4P typically look like?

 

[Riptide]

The picture with the construction equipment looks weird, like some strange post processing was done on it.

 

[Skywhisperer]

Is that what 100MP photos from M4P typically look like?

Thank you for the reply and input. After I made the post, I figured it out, coming from an Air 3S, and Mavic 3 Classics, the photos viewed on the remote looked sharp. The problem was the 100 MP resolution which look horrible on the remote, as the large files were struggling to load. Going to switch to the lower resolution. thank again!

 

[Meta4]

Is that what 100MP photos from M4P typically look like?

Nothing that I'm aware of looks like that.
I just suggested that trying the lower native resolution might give a different result.

 

[Filmarik]

Thank you for the reply and input. After I made the post, I figured it out, coming from an Air 3S, and Mavic 3 Classics, the photos viewed on the remote looked sharp. The problem was the 100 MP resolution which look horrible on the remote, as the large files were struggling to load. Going to switch to the lower resolution. thank again!

Not sure I understand. Are you saying that the photos you posted were screen shots from your remote controller?

 

[Skywhisperer]

Not sure I understand. Are you saying that the photos you posted were screen shots from your remote controller?

No, they were downloaded from the drone. A strange thing happened after the last update from DJI. After the update installed, I noticed files with Chinese writing mixed in with the normal photo and video files. That's when the camera began to lose focus. The Chinese files have magically disappeared, and the camera focus is back to normal. I forgot to take a picture of those strange files.

 

[Filmarik]

No, they were downloaded from the drone. A strange thing happened after the last update from DJI. After the update installed, I noticed files with Chinese writing mixed in with the normal photo and video files. That's when the camera began to lose focus. The Chinese files have magically disappeared, and the camera focus is back to normal. I forgot to take a picture of those strange files.

That all sounds really weird...
Just to clarify. Those posted photos were out of camera JPEGs taken with camera set to 100MP, right?

 

[Skywhisperer]

That all sounds really weird...
Just to clarify. Those posted photos were out of camera JPEGs taken with camera set to 100MP, right?

Those were the RAW files 100MB, I've noticed that the file size varies. I have some that were 110MB -112MB?

 

[Filmarik]

Those were the RAW files 100MB, I've noticed that the file size varies. I have some that were 110MB -112MB?

How did you process them to get to those published jpeg.?

 

[Meta4]

That's when the camera began to lose focus. .....

I think it's a mistake to think there was any problem with focusing.
It was a problem rendering fine detail in the small branches.
You had plenty of properly focused detail everywhere else.

Was it just one or two files or a whole flight?
Have you shot some comparison images now at 25 and 100 MP resolution to see what that shows.

 

[Filmarik]

Nothing that I'm aware of looks like that.
I just suggested that trying the lower native resolution might give a different result.

Those must be the best examples, in negative sense of the word, I have seen so far of what the QB sensor in M4P at "full" reasolution is "capable of". I am horrified, quite frankly..

 

[Paul2660]

The image with construction equipment has way way too much noise reduction applied. Was this in camera jpg or a raw file processed in non DJI software? The park scene at dirst glance seems fine but with out seeing the file at a 100 percent view hard to really tell. It could use a bit of sharpening also. But there is not the same amount of noise reduction.

In short, the 100MP files I have taken are fine. They show the effects of internal interpolation but can easily be printed at full size. From my testing they exceed the resolution of the 25MP output uprises to 100MP.

Something is really wrong with the second image. As it’s had way too much ch noise reduction applied. Construction equipment shot.

Paul

 

[Meta4]

Those must be the best examples, in negative sense of the word, I have seen so far of what the QB sensor in M4P at "full" reasolution is "capable of". I am horrified, quite frankly..

If that was the normal output from the sensor, no camera maker would use them.
It's obviously some kind of glitch, hopefully just a one-off.

My own experience with the same sensor was fine.
But the 100 MP images didn't really add much except for the bloated file size.

 

[Filmarik]

If that was the normal output from the sensor, no camera maker would use them..

Exactly right! That's why no high end FF photo camera makers use them. Only some video cameras (FX3) and mostly mobile phone cameras use QB sensors.
Maybe a glitch but pretty telling one...