As someone who has actually done several dozen photogrammetry flights, and crunched thousands of total photos, I find the P3A to be the best flight platform.
One, it's cheap. Buy a P3A and 4 batteries for the price of a Mavic, let alone P4. Two, it's a very well proven/tested flight platform at this point. Three, the fewer photos you can take, yes, the more time you save later on. Technically, yes, the lens on the Mavic will produce better results, but that's given unlimited compute resources, which very few people really have. Plus, I've yet to be convinced the Mavic sensor is on par with the P3/P4. Personally, I have a very very fast i7 workstation, but I often have to use Amazon EC2, as I'm maxed out at 32 GB of RAM, and sometimes Photoscan needs several hundred gigs to get the job done. (I've 3D modeled an entire small town).
I actually own a P3P, but if I was looking for a machine just for photogrammetry flights, it'd be the P3A hands down.
One, it's cheap. Buy a P3A and 4 batteries for the price of a Mavic, let alone P4. Two, it's a very well proven/tested flight platform at this point. Three, the fewer photos you can take, yes, the more time you save later on. Technically, yes, the lens on the Mavic will produce better results, but that's given unlimited compute resources, which very few people really have. Plus, I've yet to be convinced the Mavic sensor is on par with the P3/P4. Personally, I have a very very fast i7 workstation, but I often have to use Amazon EC2, as I'm maxed out at 32 GB of RAM, and sometimes Photoscan needs several hundred gigs to get the job done. (I've 3D modeled an entire small town).
I actually own a P3P, but if I was looking for a machine just for photogrammetry flights, it'd be the P3A hands down.