Feature
The ring adapter easily screws onto the front of any lens, and convert the thread size of your lens to the thread size of other accessory (such as filter, hoods, flashes and lens converters).
Made of high quality anodized balck aluminum(metal).
Extremely solid and lightweight.
Specifically designed for your camera for a tight and secure fit.
No wobbling or cross-threading.
Your camera's lens thread size will be marked somewhere on the lens barrel.
This number is always preceded by a (diameter) symbol.
For example: diameter 37 = 37mm lens thread size.
This number can also often be found printed on the back side of your lens cap.
The first number is always the lens thread sie, the second number is the filter size of the accessory.
If the first number is bigger, it's a step- down ring. If the first number is smaller, it's a step-up.

How step up rings work?
Step up rings provide a way to fit a larger diameter or accessory onto a smaller lens.
The step up rings screws onto your lenses threading and provided a largee thread with you can attach other element inclued more step up rings.

How step down rings work?
Step down rings work in the exact same way but instead provide a way to attach smaller accessories and filters to larger lenses.

It is important to note, the farther away from the lens you place a filter the worse the optics will be.
It is always best to look for the thinnest adapter ring that you can find as these will keep the filter close to the lens.

Specification
Color: Black
Material: Aluminum Alloy
Size: Step down: 82-37mm; Step up: 37-82mm

Package include
9x Step up 37-82 mm Rings Filter
9x Step Down 82-37 mm Rings Filter