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.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 List1 x Macro Lens Adapter Ring