I tried to upload a photo I took with kamoso to Slack, but it rejected it for being too small - Slack requires at least 512x512 resolution photos.

Reproducible: Always

Steps to Reproduce:
1. Take photo

Actual Results:  
Photo is 320x240px

Expected Results:  
Photo should have been at least 512x512px

lsusb -v for the webcam shows:

      VideoStreaming Interface Descriptor:
        bLength                            42
        bDescriptorType                    36
        bDescriptorSubtype                  3 (STILL_IMAGE_FRAME)
        bEndpointAddress                    0
        bNumImageSizePatterns               9
        wWidth( 0)                        640
        wHeight( 0)                       480
        wWidth( 1)                        320
        wHeight( 1)                       180
        wWidth( 2)                        320
        wHeight( 2)                       240
        wWidth( 3)                        352
        wHeight( 3)                       288
        wWidth( 4)                        424
        wHeight( 4)                       240
        wWidth( 5)                        640
        wHeight( 5)                       360
        wWidth( 6)                        848
        wHeight( 6)                       480
        wWidth( 7)                        960
        wHeight( 7)                       540
        wWidth( 8)                       1280
        wHeight( 8)                       720
        bNumCompressionPatterns             9

which indicates that it supports 1280x720 resolution.