Feature:1. Close-up connecting ring installed between lens and body, lengthen lens tube body to achieve the effect of ultra macro distance shooting with the principle of bellows photography.2. A set macro extension tube total 5 parts constitute, body mount ring, #1 macro adapter ring, #2 macro adapter ring, #3 macro adapter ring, lens mount ring.3. #1, #2, #3 close-up ring can use it alone, can also used in combination, longer the length of the tube body, the greater the amplification effect.4. Professional manufacturing, super macro, manual focusing and metering.5. Made of high quality metal material, sturdy, durable and long service life.Specification:Condition: 100% Brand NewItem Type: Macro Lens Adapter RingMaterial: MetalColor: BlackQuantity: 1PCSWeight: Approx. 125gFitment: for Sony E Mount NEX Camera Lens A7 A7R A7S NEX-7 6 5T 5C 5R 5N F3 C3 3 A6000 A5100 A5000Let's take F=50mm fixed-focus lens as example to see what magnification can achieved by different combinations of connectors:Macro Lens Adapter Ring Combination Object Ratio Image Adjustment RangeDo not Add Ring 1:0.20~1:0.34Add #1 1:0.34~1:0.48Add #2 1:0.48~1:0.62Add #1+#2 1:0.62~1:0.76Add #3 1:0.76~1:0.90Add #1+#3 1:0.90~1:1.04Add #2+#3 1:1.04~1:1.18Add #1+#2+#3 1:1.18~1:1.32.Package List:1 x Macro Lens Adapter Ring