Dropstitch no longer uses a flat 16-photo cap for Product Studio uploads. For upload batches, the limit now depends on the grouping method: AI grouping supports up to 50 images per batch, and Automatic supports up to 500 images per batch, or 200 during trial. If Automatic cannot rely on the image metadata, you can switch that upload to AI grouping or use a fixed split count. For the full setup and when to use each method, see Use Image Grouping in Dropstitch.
How many photos can I upload per product?
See the current Product Studio upload limits by grouping method, including AI grouping and Automatic batch limits.