Is my lens focus good ?air2s
- Thread starter Br3dala
- Start date
First off; that photo is not full size, so it is hard to get a close look at it.
Secondly, ND filters are typically for video; not general photography - though ND's are used for long exposure shots in things like hyperlapses and others, but for the shot you just showed, you don't want to use an ND, and certainly not a 5 stop reduction of light.
A good rule of thumb is; you never want your shutter to go below twice the focal length of the lens used. In the Air2S it has a 22mm Focal length equivalent, so if your shutter drops below 1/50th of a second - even with a 3 axis gimbal on a drone in flight - you may be adding motion blur.
Secondly, ND filters are typically for video; not general photography - though ND's are used for long exposure shots in things like hyperlapses and others, but for the shot you just showed, you don't want to use an ND, and certainly not a 5 stop reduction of light.
A good rule of thumb is; you never want your shutter to go below twice the focal length of the lens used. In the Air2S it has a 22mm Focal length equivalent, so if your shutter drops below 1/50th of a second - even with a 3 axis gimbal on a drone in flight - you may be adding motion blur.
Here is a link to Download the picture
What can be seen in that image appears to be fine, but the masses of leaves is not a good subject to check for lens sharpness.
It would be better to have a subject with hard detail.
If you are shooting stills, the ND32 filter is making things hard for you and forcing a much slower shutter speed than necessary.
It only allows 3% of the light to pass.
Steve- that image is a bit soft! I looked at it at 200% and it way too soft. I tried to sharpen it a bit in Photoshop but I don't thing it did much good.
Dale
Hmm sounds like my sensor have a problem...
I took this picture without nd filter . This is the jpeg version 100 iso 1/320
This is normal ?or
I took this picture without nd filter . This is the jpeg version 100 iso 1/320
This is normal ?or
Last edited:
I wouldn't be so sure the problem is in the sensor!It could be that the lens elements are a tiny bit off. If on warranty, I'd get DJI to check it. See my images I sent before- there is better sharpening in the sand and foliage that will make the image sharper.
Dale
Did u check my last picture with the lake? I just bought this drone a week ago that's Why i am a bit disapointed 
There was only the top down picture of the vehicle on the sandy road in the green bushes. Where is the other phot you are asking about?Did u check my last picture with the lake? I just bought this drone a week ago that's Why i am a bit disapointed
Dale
This is the link with the latest picture i took this afternoon JPEG without nd filter :
I took a try at editing this one and it came out pretty good. I think it is sharp with the editing which means your lens is capturing the correct information on the sensor (at least to my thinking). Here they are original and edited versions of my editing. Double click to enlarge
Dale
I would say that you will need to shoot in RAW and edit your still images, but yes, I found that with editing your sensor and lens seem to be capturing sharp images.
Your photos aren't the best for judging focus and image sharpness, but they appear to be OK.
Shoot something with hard detail instead of thousands of distant soft leaves if you want to check your focus properly.
Shooting raw doesn't make the focus any better than shooting jpg does.
Ok guys i'll try to take a picture like a house or something else without ND FILTER and i will send you the DNG file and the jpeg file.
Thanks
Thanks
You're right but RAW has a gazillion more pixels and more details in the file give more details in the final image when edited.
Dale .. a raw image has exactly the same number of pixels as the jpg file.
Count them sometime.
When an image is captured in a digital camera, it is recorded as raw data. If the camera format is set to JPEG, this raw data is processed and compressed before it is saved in the JPEG format.
If the camera format is set to raw, no processing is applied, and therefore the file stores more tonal and color data. With more data stored in the file, there is more processing flexibility than a JPEG can offer. Here's a cooking analogy: a raw file contains the ingredients to make a specific meal that you can prep however you'd like, whereas a JPEG is that meal already cooked, and there is less flexibility in how you can modify it. There is more information from the sensor with which to edit highs and lows.
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