...
Sony a9 iii | a2A5328-15ucPRO | ATL314S-CT | GV-77U5WP | SVS-Vistek shr661 | A7riv | |
focal length [mm] | 85 | 35 | 50 | 35 | 50 | 55 |
relative aperture for required depth of field [f/] | 20 | 10 | 13 | 11 | 11 | 13 |
absolute aperture [mm] | 4.25 | 3.5 | 3.85 | 3.18 | 4.55 | 4.23 |
pixel size [um] | 6 | 2.74 | 3.45 | 3.2 | 3.45 | 3.76 |
normalized incoming light per pixel bin | 100.0 | 83.4 | 78.3 | 94.0 | 109.3 | 92.9 |
Notes
We need more space because of increased image size
Focus
API template scripts to interface with the camera - Mikah Pinegar to look into that
Company to get back on sensor options
Any electrically adjustable lens? This doesn’t mean automatic focus regardless, these cameras don’t have auto focus
Process with manually adjustable lens:
Define at what distance we need the lens from the tallest plant - We can calculate this - The camera will be 1.5 to 2 m - We need to define the exact number
Technician enters average height of the canopy at the beginning of the run changes the Z axes according to the canopy height (estimate)
Set the focus at a range that gives us the biggest FOV, what distance from the plant that is
Practical aperture setting:
Minimum depth of field:
We want to not adjust the lens, the user just changes the Z axis
Can we achieve the lighting for this sensor? The one that Soren suggested is not in production anymore, we would have to get it second hand - Mark can build a flash for a later upgrade.
We need to be able to map out where the pots are
Notes
SDK (Mikah): we would have to use c++ language (Priya Jakhar best candidate for the task) - Works with Mac, Windows, Linux - Documentation looks good, well maintained
Mechanical data sheets (Mark): mechanical, good documentation, easy to interface - You can attach 4 different flashes
Flashes (Soren): No obvious choices for now
Flash tubes (We’ll have to build from scratch)
LEDs
Ring flash https://www.ebay.com/itm/256381363536?hash=item3bb1852550:g:s8MAAOSwOZNlqUjo
Lens (Soren): needs to share more information with camera vendor to get lens recommendation
Some specs that we want on the camera (mark):
not poe version
10 Gig port version
To purchase
Get a quote from the camera company to give to Susan
Machine Vision Camera (Chris Reberg-Horton Susan ) - Sole sourcing
Ring flash (Søren to get flash link)
Lens (Søren to get recommendation from the camera manufacturer for both cameras that use this sensor) - Define the lens before placing a camera order