K&F Concept 62mm ND Fader Variable Neutral Density Adjustable ND Filter ND2 to ND400 for Sigma Tamron Sony Alpha A57 A77 A65 DSLR Cameras + Lens Cleaning Cloth 62mm ND2-ND400 cocoon and the "Magic Finger Clutch"

and the "Magic Finger Clutch" provides one-hand friction grip

5 V AAA) batteries (included) with a typical battery life of 10 hours or an AC adapter (not included)

Package Includes: 5 x Ferrite Core Ring

) Two bottles in this package

K&F Concept 62mm ND Fader Variable Neutral Density Adjustable ND Filter ND2 to ND400 for Sigma Tamron Sony Alpha A57 A77 A65 DSLR Cameras + Lens Cleaning Cloth 62mm ND2-ND400 cocoon and the "Magic Finger Clutch"K&F Concept 62mm ND Fader Variable Neutral Density Adjustable ND Filter ND2 to ND400 for Sigma Tamron Sony Alpha A57 A77 A65 DSLR Cameras + Lens Cleaning Cloth Slim Adjustable ND Filter Feature: Reduces the amount of light reaching the film without affecting the color. Applies slow shutter speed under strong sunlight exposure. Glass mounted with high pressure press technology. Made of high quality optical glass by K&F Concept technology. Wider outer