Product Review

Function
 
Converts the thread size of your lens to the thread size of any other accessory (such as filters, hoods, flashes and lens converters)

Easily screws onto the front of lens of the same thread

Feature
 
High quality

Solid and lightweight

Great tightness, no wobbling or cross-threading

Environmentally friendly material made of aircraft grade magnalium

Superfine frame polished with strict surface treatment

Application 
Fits any lens with the same filter thread; manual or autofocus, digital or film.

Remarks

The first number is always the lens thread size, the second number is the filter size of the accessory.

How rings work

Step up rings provide a way to fit larger diameter filters or ccessories onto a smaller lens

Step down rings provide a way to attach smaller filters or accessories to a larger lenses

Package includes:

step-up ring
1 X 37-49mm
1X49-52mm
1 X 52-55mm
1 X 55-58mm
1 X 58-62mm
1 X 62-67mm 
1 X 67-72mm
1 X 72-77mm
1 X 77-82mm

step-down ring
1 X 82-77mm
1 X 77-72mm
1 X 72-67mm
1 X 67-62mm
1 X 62-58mm
1 X 58-55mm
1 X 55-52mm
1 X 52-49mm
1 X 49-37mm