im loving the lens. Wish on the next update they will enable raw recording with manual lenses with no electronic contacts
Another inspire 2. Laowa 7.5 sample
- Thread starter smoak5
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I'm not happy with this lens. Looking at your video, you have red circles in the middle of you video. I have the same issue. Look at the middle of you video, you will see a read spot casue by the lens. Also, building are not straight in the video, slanted at an angle. See picture below - Arrow pointing at ring that appers when using this lens only.
Are you referring to the lens flare? Every lens is prone to flaring just depends on the quality of the flare. There is some distortion to straight vertical lines because of the angle the gimbal is pointed. Most rectilinear Lenses will do this if the lense is pointed at an angle--that's why there are tilt shift lenses! You can always correct it in post.
The lens for what it does is incredible.
So can you just plug this lens in like the others and focus manually to infinity and it works fine - or do you need to hot swap with another lens to "fix" Go 4??
Depends on your definition of working fine. If you don't record in raw then yes it works fine. You will get an error saying no lens is attached. If you want to record in raw, you will have to hot swap it with a lens with electronic contacts once a stable video feed is established.
So for using for mapping for example - if go thinks there is no lens attached - it wouldn't fire off in something like map pilot would it ?
As to the 'hot-swapping" of lenses, when I tried it, the gimbal growled loudly about it when the Olympus lens came off for me to put the Laowa on. I don't know if rotating the lens with the contacts being on or active is a good idea, or if it will damage the len's electronics that had contacts in it, or maybe the camera itself in doing so? Lot of contact pads on the back of those lenses to rotate the contacts over.
I also read this in the Olympus Pen-F owner's manual. On page 15, this appears TWICE:
• Make sure the camera is turned off when attaching or removing the lens.
Seem the best fix would be for DJI to fix GO so it can be used with non-contact lenses like the Laowa. I also found some odd shift in focus at infinity on the screen when going from Movie mode to Still camera for some reason. To set up the Still camera shot for exposure, I flipped into Movie and set the EV value I wanted there, and then flipped back to Still mode and it held the ISO and shutter speed from the Movie mode. Otherwise, trying to set shutter speed in Still camera mode was maddening. The Laowa doesn't play well with the settings in GO 4, imho.
I need to play some more with this lens. As noted already, flare will be an issue as it is very wide. Perspective angle will cause the tilt to some objects if not 90 degrees to them, but may program can adjust for that. I do see some heavy vignetting wide open, maybe as much as a stop or more in the corners, and adding a filter may exacerbate it too, so that needs to be addressed in post as well. Some programs do better at the vignette correction than others too. LR did pretty well, and they do show some Laowa lenses in it already so the 7.5mm may be coming in a future LR update.
I also read this in the Olympus Pen-F owner's manual. On page 15, this appears TWICE:
• Make sure the camera is turned off when attaching or removing the lens.
Seem the best fix would be for DJI to fix GO so it can be used with non-contact lenses like the Laowa. I also found some odd shift in focus at infinity on the screen when going from Movie mode to Still camera for some reason. To set up the Still camera shot for exposure, I flipped into Movie and set the EV value I wanted there, and then flipped back to Still mode and it held the ISO and shutter speed from the Movie mode. Otherwise, trying to set shutter speed in Still camera mode was maddening. The Laowa doesn't play well with the settings in GO 4, imho.
I need to play some more with this lens. As noted already, flare will be an issue as it is very wide. Perspective angle will cause the tilt to some objects if not 90 degrees to them, but may program can adjust for that. I do see some heavy vignetting wide open, maybe as much as a stop or more in the corners, and adding a filter may exacerbate it too, so that needs to be addressed in post as well. Some programs do better at the vignette correction than others too. LR did pretty well, and they do show some Laowa lenses in it already so the 7.5mm may be coming in a future LR update.
Casey,
Think this would work on the Laowa and allow for it to start up without doing a hot swap?
http://peleng8.com/af-lens-adapters...ip-dandelion-iv-generation-for-micro-4/3.html
Basically a way to chip the lenses yourself
Heck for $28 I'm willing to give it a shot.
Interesting, but reading their "How to Program the Chip" PDF manual I don't know if it is possible with the DJI camera as it doesn't have controls for the lens like Reset or Preview nor any ability to enter text information as shown with the Olympus cameras using the chip in their manual here: http://peleng8.com/pic/programming_olympus_en.pdf Wish the maker of this chip would try it out with the Laowa and the DJI X5-series cameras first and then do a "How to Install on a X-series DJI camera" PDF manual. It would be awful in gluing it on and then finding the clearance wouldn't allow it to rotate in and lock.
DJI also left a lot of camera stuff in their cameras off like the ability to read and update the versions of the lens itself. I ran into that when I bought a used 45mm from Keh.com and it was an older Version 1 and Olympus was at Version 1.2 for some aperture thing that wasn't working right shooting video. I couldn't do it (No Olympus or Panasonic camera here.) so Olympus Service did it and cost me $140.
Seems Venus Optics should have done something like this from the factory. I haven't gotten an answer from them about this matter either. I can get it into a decent exposure mode by switching from video to still mode a few times and changing the EV setting to do so, but it is sort of a pain and you have to be careful on the final setting. Might pay to set it up with an exposure meter first to get the f/stop set when putting it on rather than hot-swapping, but I haven't tried to finalize a method to do so yet.
I'm still leery of doing a hot-swap with the contacts being on and sliding the others over them taking a lens off to put the Laowa on. The gimbal really growls doing so and no telling what is going on with the lens electronics either. My Olympus 45m came off stopped way down doing this hot-swap thing where I used to be able to look through it and it was opened up. Dunno.
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