Amazon Prime Day Is Here! Share the Best Deals in This Thread

While last year's Amazon Prime Day was quite the disappointment, word on the street is that this year will be quite different. Already, there seems to be a huge lot of gear promised to go on sale.

To start us out, NiSi Filters announced on its Facebook page that its filters and filter adapters will go on sale for Amazon Prime Day. Find those deals, here: https://www.amazon.com/s?marketplaceID=ATVPDKIKX0DER&me=A25ZGMW0UYJ0Z1&m...

This is barely the start. Add your favorite deals as you uncover them so everyone can share some savings!

UPDATE:
All Amazon Prime Cameras and Photos deals:
https://www.amazon.com/b/ref=br_mbt_mgMdr?_encoding=UTF8&gb_f_GB-SUPPLE=...

All Amazon Prime Electronics Deals:
https://www.amazon.com/b/ref=br_mbt_mgUpt?_encoding=UTF8&gb_f_GB-SUPPLE=...

UPDATE 2: Prime Day PSA -- Two Reminders
1.) Double-check prices against popular camera store prices for camera gear. Do the same with other products when possible. While there are some serious savings on great gear, other things (like some headphones I found) are literally one penny less than they otherwise would be. And ta-da, it's a "Prime Day Deal." Research your prices a bit, but jump on it as soon as you can once you see you're saving.
2.) If you use the search bar to search all Prime Day times, it'll only show what's currently available. Continue searching throughout the day if you're looking for something in particular, or search an entire category to see what deals might be coming up at a later hour.