Mavic 4 AF issues and weaknesses

[Thg]

Hi, I only did a few photos yet but what I can see is poor AF performance using the 70 and 168 mm cameras. At least half of my photos are unsharp. 28 mm seems ok, pictures are tack sharp.
The attached example is a 100 % enlargement crop, in a picture taken with the 168 mm lens. I don't think it is related to the longer lenses or the smaller sensor, as some photos in a series are ok, and some others are blurred.
Anyone else experiencing this ?
Best, Gilles.

 

[UAVquadman]

Hi, I only did a few photos yet but what I can see is poor AF performance using the 70 and 168 mm cameras. At least half of my photos are unsharp. 28 mm seems ok, pictures are tack sharp.
The attached example is a 100 % enlargement crop, in a picture taken with the 168 mm lens. I don't think it is related to the longer lenses or the smaller sensor, as some photos in a series are ok, and some others are blurred.
Anyone else experiencing this ?
Best, Gilles.View attachment 182511

try tapping on the screen where you want the camera to focus on... as this helps me when using the tele on the Mavic 3 Pro drone.

 

[Thg]

try tapping on the screen where you want the camera to focus on... as this helps me when using the tele on the Mavic 3 Pro drone.

Yes, this is what I tried to do but it doesn't work all the time.

 

[fotoLux]

Click on the screen: I thought that this only defined the zone on which the exposure metering was based. Am I wrong?

 

[fotoLux]

Perhaps the blurring is also due to the greater risk of camera shake with long focal lengths.

 

[tstr14]

Perhaps the blurring is also due to the greater risk of camera shake with long focal lengths.

This, plus the longer focal length results in a larger aperture that will also require a longer shutter speed to capture enough light. The longer the shutter speed, coupled with the fact the ship appears to be moving, plus drone movement (especially if there is a wind!), will result in a blurred photo.

For a fair test, try the lens on a stationary target on a calm day with lots of sunlight. Other wise, you may need post processing:

 

[Meta4]

This, plus the longer focal length results in a larger aperture that will also require a longer shutter speed to capture enough light. The longer the shutter speed, coupled with the fact the ship appears to be moving, plus drone movement (especially if there is a wind!), will result in a blurred photo.

The drone gimbal holds the camera still much more effectively than any human can.
If those factors actually caused blurred photos, I'd have a lot of trouble shooting my pix.
I shoot fast moving ships and boats every week, from a fast moving drone, in strong winds, using all lenses of the Mavic 3 pro and don't have any problem with blurring.

Here's a fast moving pilot boat with the drone flying fast to keep up.
The water surface shows there is a significant wind and the camera used was the long tele.

 

[akdrone]

If you are shooting DNG then it may require further post processing of sharpness. JPG are processed further and that processing often includes sharpening. Also be aware that every factory run of lenses will have some variation in them. High quality lenses like Leica undergo stringent QC, rejecting those that don't live up to the strict standards of the brand. While the Mav3 and 4 lenses may be "hasselblad", it doesn't mean that those QC standards are even close to the old hassleblad companies famous lenses. This means that some of us get really great, sharp lenses and others get...not so amazing lenses. I had my original Mav3 replaced and the replacement was noticeably sharper than my first. Regardless of that, try a bit of sharpening filter on your images. I do minor sharpening on all my Mav3 Pro tele shots and it makes a world of difference without making it over-sharpened.