Awesome stuff! I think for anamorphic lens grid shooting one should also consider if the lens has mounting rotation error due to bad lens mounting, no? (For anamorphic Lens Rotation parameter in 3DE) Otherwise the squares could be skewed left/right. And camera position for anamorphic should remain the same when capturing grids at different focus distance for the lens breathing simulation.
Yes, we don't need to move camera if grid is in focus at different focus distance values - it is very handy, that is why we recommend to close aperture to max value. About anamorphic lens rotation - the industry standard camera and lenses works together very well and it is hard to mount lens badly =)
I have two identical cameras (two units) - should I record two sets of lense grids or it's ok to shoot on just one. In theory every sensor has micro differences but does it matter?
Good question! If both of the cameras have the same lens mount then, in theory, 1 is enough. But we will be grateful if you test that theory and send results to us to: solveme@matchmovemachine.com You just need to put 2nd camera at the same place (make sure, that sensor is on the same place compared to 1st camera) and shoot grid in Open Gate mode.
I have one question: would it not be better to move the chart or the camera to the distance of the witness mark we are shooting the lens at? Like, we are focusing the lens at 2 feet so the chart needs to be 2 feet away etc etc. I'm asking cause even with the greater DoF given by T22 the chart by physics will be only sharp at an inphinitesimal plane at the time. Depth of Field is just a "construct" where people decided what is acceptably sharp but in theory only one plane is sharp at the time.
Indeed, depth of field (DoF) is merely a construct, and even with a substantial DoF, the sharpest point will be located in the center. Therefore, it is crucial to determine the maximum grid blurring level before it becomes unresolvable in matchmove software. We will provide examples for reference in the near future. Ideally, moving the camera/grid for each focus distance mark would be the most efficient scenario, assuming no time constraints. However, practical considerations often introduce variables that deviate from this ideal scenario. Therefore, we recommend that the camera be fixed, the DoF be maximized, and as many focus distances as possible be captured without moving the camera. This approach is the most expedient.
Generally no - it can be a slightly unparallel to the camera sensor. But trying to make a Grid perfectly parallel to the camera sensor is a kind of "sharing love and passion" act to the person who will work with this material. Because if you see perfectly fits grid you can not make your own part of the job bad =) For alignment we use laser leveler to set horizon + center line; laser meter to set exact height; phone/laser meter leveler to make sure that camera angle is 0. If we have a lot of lenses and whole day - we use dolly also.
Woahh! What a spectacular tutorial!
Finally! The ultimate grid tutorial! We need to remove other misleading stuff from youtube)
Great accumulation of experience, knowledge and well edited!
Useful stuff! Very informative and detailed. Thank you.
This is new to me but thanks for the explanation!! 😁🙏
That was awesome thank you so much guys. Hope you make a nuke tutorial for how to use lens distortion on a professional way 🙏
Awesome stuff! I think for anamorphic lens grid shooting one should also consider if the lens has mounting rotation error due to bad lens mounting, no? (For anamorphic Lens Rotation parameter in 3DE) Otherwise the squares could be skewed left/right.
And camera position for anamorphic should remain the same when capturing grids at different focus distance for the lens breathing simulation.
Yes, we don't need to move camera if grid is in focus at different focus distance values - it is very handy, that is why we recommend to close aperture to max value.
About anamorphic lens rotation - the industry standard camera and lenses works together very well and it is hard to mount lens badly =)
I'm so happy you recommending not to use multi resolution grids !
Thank you sooooooo much!
I have two identical cameras (two units) - should I record two sets of lense grids or it's ok to shoot on just one. In theory every sensor has micro differences but does it matter?
Good question!
If both of the cameras have the same lens mount then, in theory, 1 is enough. But we will be grateful if you test that theory and send results to us to: solveme@matchmovemachine.com
You just need to put 2nd camera at the same place (make sure, that sensor is on the same place compared to 1st camera) and shoot grid in Open Gate mode.
Awesome!
Loved this video so much! Can you help with a name of the software u use on 4:26?
VFX report
I have one question: would it not be better to move the chart or the camera to the distance of the witness mark we are shooting the lens at? Like, we are focusing the lens at 2 feet so the chart needs to be 2 feet away etc etc.
I'm asking cause even with the greater DoF given by T22 the chart by physics will be only sharp at an inphinitesimal plane at the time. Depth of Field is just a "construct" where people decided what is acceptably sharp but in theory only one plane is sharp at the time.
Indeed, depth of field (DoF) is merely a construct, and even with a substantial DoF, the sharpest point will be located in the center. Therefore, it is crucial to determine the maximum grid blurring level before it becomes unresolvable in matchmove software. We will provide examples for reference in the near future.
Ideally, moving the camera/grid for each focus distance mark would be the most efficient scenario, assuming no time constraints. However, practical considerations often introduce variables that deviate from this ideal scenario. Therefore, we recommend that the camera be fixed, the DoF be maximized, and as many focus distances as possible be captured without moving the camera. This approach is the most expedient.
amazing !
Can you guys make some tutorials for syntheyes or 3deq?
Yes, we are planning to share some tips and tricks soon. Stay subscribed to get updates
Can you explain to me why it is necessary to note the focus distance of lens distortion?
Because focus distance changing affects on lens distortion.
Does the grid on the wall need to be perfectly parallel and square to the camera sensor? How do you achieve that?
Generally no - it can be a slightly unparallel to the camera sensor. But trying to make a Grid perfectly parallel to the camera sensor is a kind of "sharing love and passion" act to the person who will work with this material. Because if you see perfectly fits grid you can not make your own part of the job bad =)
For alignment we use laser leveler to set horizon + center line; laser meter to set exact height; phone/laser meter leveler to make sure that camera angle is 0.
If we have a lot of lenses and whole day - we use dolly also.
@@matchmovemachine makes sense! Thank you.
Thanks!
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Ios app name
VFX report
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