Corner focus problem due to lens/sensor-issue

noone · Jan 25, 2017

I just received my Mavic and took these JPGs. They look good to my eyes.

I haven't yet tried RAW.

Thoughts?

Dropbox - Tuesday, Jan 24

maikm · Jan 25, 2017

noone said:
Thoughts?

I can veeery slight variations in corner sharpness, and can't really judge the upper right one due to lack of contrasty detail, but I'd say it's good.

noone · Jan 25, 2017

maikm said:
I can veeery slight variations in corner sharpness, and can't really judge the upper right one due to lack of contrasty detail, but I'd say it's good.

I thought the same after comparing to others I've seen posted here. Thanks.

Kennetf · Jan 25, 2017

Hi guys! Just randomly came across this thread, and of course started worrying if I have this issue as well. Once I read about what you guys call "soft corners", I remembered that especially one of my shots had quite a soft upper left corner. Could some of you please check if that's the case? I just made a test edit, and thinking of it, there might be more shots that have somewhat of soft corners as well, but focus on 0:54, at the mountain tops in the upper left corner:
Does this mean I should send the mavic back?

maikm · Jan 26, 2017

Looks a tad soft, but it's hard to judge by the video. Note that the 16:9 video format already crops away a lot of the extreme corner. Do you have a still photo, shot straight downwards to the ground, with detail on the ground?

leesmavic · Jan 26, 2017

Kennetf said:
Hi guys! Just randomly came across this thread, and of course started worrying if I have this issue as well. Once I read about what you guys call "soft corners", I remembered that especially one of my shots had quite a soft upper left corner. Could some of you please check if that's the case? I just made a test edit, and thinking of it, there might be more shots that have somewhat of soft corners as well, but focus on 0:54, at the mountain tops in the upper left corner:

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Does this mean I should send the mavic back?

Were you happy with your Mavic before you've found this thread? Send it in if not. Otherwise stop searching for flaws, there are many.

Matisse13 · Jan 26, 2017

BunsenBurner said:
I'm in Ireland - had the same issue image graduating to soft on bottom right side: it's either a misaligned lens element or sensor. After a bit of back and forth with DJI chat (not very helpful) and on telephone (extremely helpful and sharp) I got the UPS label, and RMA approval: dispatched 11th Jan- they received in NL today. Registered as received two hours later: They say they'll have it in a box back to me replaced within 5 days. Probably another 5 days on top for Surface UPS. I'll keep ye all posted...

I know of another Dublin guy who had the same prob and sent his back and got his back to dublin within 6 working days

photoholic · Jan 27, 2017

photoholic said:
January
15. > Support Ticket
16. > Reply > Will send me an UPS Label to send it in
17. > Label received
18. > UPS Pick up
20. > Mavic arrives in the Netherlands
23. > No news so far

25. > Still no news > Will sell the Mavic... ordered Phantom 4 Pro...[/QUOTE]
27. > Great news... no replacement units in the Netherlands

(P4P is great... cam perfect)

photoholic · Jan 30, 2017

photoholic said:
25. > Still no news > Will sell the Mavic... ordered Phantom 4 Pro...

27. > Great news... no replacement units in the Netherlands

(P4P is great... cam perfect)[/QUOTE]
30. > No news

photoholic · Jan 31, 2017

photoholic said:
27. > Great news... no replacement units in the Netherlands (P4P is great... cam perfect)

30. > No news[/QUOTE]
31. > No news

photoholic · Feb 1, 2017

photoholic said:
30. > No news

31. > No news[/QUOTE]
2.2. > UPS info... the Mavic will be baaack... **** chinese new year... that's why it took so long

PeterG · Feb 2, 2017

This might help before you send it back...

maikm · Feb 2, 2017

maikm said:
Oh man. I sent my new Mavic back to DJI as DOA because of a blurry lower left corner. Today received a new Mavic, and guess what? It's even worse.

Replying to myself, today I received my third Mavic from DJI, since the first two were dead on arrival with this corner sharpness issue. So, what's your guess everybody, is this one all right?

maikm · Feb 2, 2017

Well, here's the answer. Again, the lower right corner is blurred. Not as bad as the previous one, but still enough to make it unusable for any photography. I'm frustrated. I'm leaving on a photo journey to Iceland next Tuesday, and now I don't have a drone. I'm almost crying.

Test photo, shot straight downwards to a plane subject.

Here's a DNG of this. Compare upper right and lower right corner, for example: https://musall.de/files/tmp/maik_20170202_162822_fc220.dng

Sumi · Feb 8, 2017

Got my second today and same blur ****, even worse

airseav · Feb 18, 2017

I am having the same type of issues with my Mavic and I can say that it is not a problem caused by the physical limitations of the camera/sensor. The problem is while one area of the image is sharp (at least relatively), another section on the same focal plane is totally soft. There is almost tilt-shift like effect with the images. The same issue also appears in video. To me it looks like a misalignment between lens and sensor. I have an email out to DJI and will be calling them on Monday as it sounds like this is the best way to get worthwhile customer support.

Moto-Mavic · Feb 26, 2017

Pablo_s said:
Hi guys, could anybody upload a sample of the problem?

I sent an email to DJI support today to see about correcting the problem...... glad I am not alone and they seem to be taking responsibility.

Threshold · Feb 26, 2017

I have this problem. It's very noticeable. I'm going to wait to send mine back until they work out the kinks.

Pablo_s · Feb 27, 2017

I don't remember where I read about the water color effect on video. Have you tried the same solution? soft camera reset setting the video mode to pal and then back to ntfs?

mojo43 · Mar 7, 2017

I have this same problem as well. What I don't understand is that only some of the clips have it. This is a fixed aperture camera correct? It seems that something is changing whether or not the corners are soft. Maybe it is the AF?