Ask for camera accessories. What brands and models are these?

Most of the things on this list only write the requirements, not the brand and model. You can take them to the store where you buy photographic equipment, let them find it as required, and then choose the original factory or deputy factory according to the product performance and budget. However, because the requirements clearly require four original batteries, there is no other choice for this one. R3 uses Canon LP-E 19/LP-E4N battery. But others are finer, some are not fine enough, and some are still a little out of alignment. You may have to ask again when buying equipment, such as what kind of nd mirror you need and what kind of GND mirror you need. In addition, the size of the UV mirror and the adapter ring is determined according to the lenses you use together (because there is no designated brand and so on, this is mainly a matter of size). Consider taking the machine with you when buying. In addition, Canon R3 has no handle, and R3 uses two different memory cards, so the card and the card reader need to prepare two different ones respectively.