ReviewsAdjustable Focus System

Sony FE 70-200mm f/2.8 GM OSS Lens

  • G Master design combines extraordinary sharpness and smooth bokeh, Constant F2.8 max aperture maintains exposure and depth of field.Weight 1480 g (without tripod mount).
  • Class-leading min. focus distance of 37.8” / 0.25x max. mag, Dual floating focus system for high AF speed and precision, XA, ED/Super ED elements and Nano AR Coating for superb resolution.
  • Aspherical elements & 11-blade circular aperture for gorgeous bokeh, Min. focus breathing and par focal design ideal for video, Direct coupled mechanical focus system for precise manual focus.
  • Rigid construction with constant lens length during focusing and zooming, High performance Optical Steady Shot Image stabilization, Dust and moisture resistant for robust reliability.
  • Nano AR coating suppress reflections, flare and ghosting, XA (extreme aspherical) element with 0.01 micron surface precision.
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Pentax HD DA 55-300mm f/4.5-6.3 ED PLM WR RE Lens

  • Short minimum focusing distance of 095 meter PENTAX’s first K mount with electromagnetic diaphragm control system for a quiet sound operation during movie recording.
  • Diaphragm blades: 9.Rear focus system and PLM (pulse motor), direct drive lead screw system for quite zoom a High speed AF Compact telephoto zoom lens thanks to its collapsible structure.
  • Weather resistant construction ED lens elements for brilliant sharpness and saturated colors.
  • HD coating to optimize light transmittance and minimize reflection Quick Shift Focus System to instantly change the AF mode to MF by twisting the focus ring.
  • SP (Super Protect) Coating applied to the front surface of the lens to effectively repel water and grease Rounded diaphragm to produce a beautiful bokeh.
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File Under Jungle / Drum & Bass

  • EMAD SYSTEM– The Evans Clear Bass Drum Head has an externally mounted adjustable damping system to control the attack and focus of the drum head by choosing one of two removable foam rings. The 22” drum head has an outer ply of 7mil and an inner ply of 10mil film for added durability..
  • LEVEL 360 TECHNOLOGY – A Level 360 collar allows the clear bass drum head to seat itself properly and in turn provides a head that is easier to tune and a wider tonal range for a sound that is studio ready..
  • AVAILABLE IN 5 SIZES – Evans EMAD2 clear bass drum heads are available in sizes 18” to 26” with multiple thickness and coating options..
  • FOR ALL MUSIC GENRES – The EMAD2 bass drum head is extremely versatile for all music genres. A true working drummer’s choice, the adjustable damping caters to all bass drum tones..
  • MADE IN THE USA - For over 60 years, Evans has been a pioneer in drum head manufacturing and design. Regarded for high quality and consistency all Evans drumheads are proudly designed, engineered, and manufactured in the USA to the most stringent quality controls in the industry..
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Bushnell Legacy WP 10-22 x 50 Zoom Binocular

  • Rugged rubber armoring absorbs shock and offers a secure grip.
  • Adjustable zoom binoculars with 10 to 22x magnification and 50-millimeter objectives.
  • Porro prism system with fully multi-coated optics and BaK-4 prisms.
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Ellis Manufacturing Company - Light Duty Steel Lifting Shores - 14 - 22 Range of Adjustment - 18,000 lb Safe Load Capacity - Adjustable Structural Support System

  • LIGHT DUTY STEEL LIFTING SHORE: The Ellis Light Duty Steel Lifting Shore is an adjustable structural support system with patented thrust bearings to....
  • EASY TO USE: These lifting jacks can easily be used as a temporary or permeant support system with up to a 18,000 lbs safe load capacity. Ellis takes....
  • SAFE & SECURE: Built with high quality materials, this adjustable lifting jack is extremely powerful and long-lasting. This light duty steel lifting....
  • SPECIFICATIONS: Weight 23 lb, Range of Adjustment: 14" - 22", Safe Load Capacity: 18,000 lbs, Wing Nut: 8.75" Long Galvanized, Top Plate: 3/8x 6/6"....
  • TRUST IN ELLIS: Ellis Manufacturing Company has been a leading manufacturer of construction materials since 1951. Our primary focus has always been on....
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SWIFT Stellar 1 Pro-T Research-Grade Infinity Corrected Compound Microscope, 40X-2500X Magnification, Siedentopf Trinocular Head, Mechanical Stage, Ultra-Precise Focusing, Camera-Compatible

  • ...ully multi-coating Infinity Plan objectives provide high contrast and flat image, combined with interchangeable wide-field 10X and 25X glass eyepieces to offer six magnification levels 40X, 100X, 250X, 400X, 1000X, and 2500X..
  • Ergonomic and user-friendly design reduces strain on the user. The Siedentopf head, easily adjustable for different interpupillary distances without losing focus, is 30-degree tilted to reduce neck strain. The focus knobs are positioned low to ensure that the hands can rest on the desk while using the microscope. The carrying handle, power adapter compartment, and power cord hanger are all integrated into the microscope stand for easy microscope transport and better storage of parts..
  • Highly energy efficient and LED illumination has a low power consumption and is compatible with a Type-C plug from a portable charger making this microscope absolutely portable. The auto power off function ensures that the battery is not drained inadvertently..
  • The built-in "quick start guide" system assists the user to find the focus point easily and also to adjust the right aperture diaphragm for perfect specimen illumination. A great image can easily be acquired, even for a new user for microscopes..
  • This microscope is covered by an industry-leadin....
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Evans EMAD Clear Tom Hoop Drum Head, 16 Inch

  • 16" drum head made using a single ply of 10mil film.
  • Externally Mounted Adjustable Damping (EMAD) system allows the player to adjust attack and focus.
  • Very versatile head for all music genres.
  • All Evans drum heads are designed, engineered and manufactured in the USA.
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MARSRE Pro Follow Focus with A/B Hard Stops, Gear Ring Belt and 15mm Quick Release Rod Clamp for Canon Nikon Sony Panasonic and Other DSLR Video Cameras and DV Camcorders

  • Rubberized quick release camera plate with hand grip.
  • Flexible designed, easily adjust into different shooting mode..
  • Compatible with industry stand 15mm rods.
  • Bottom plate have a 1/4" thread for connecting to tripod, monopod or other device with 1/4" screw head..
  • Completely gear-driven design for slip-free, accurate, and repeatable focus movement.
  • can be mounted from both sides for left or right hand use..
  • Adjustable height to fit different lens sizes and diameters from 43mm up to 82mm.
  • Swing-away mechanism for quick lens changes, degree of shielding freely adjustable..
  • Ideal for making video with movable scene or micro shoots.
  • precision-machined Follow Focus system provides repeatable, accurate focusing..
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Ledlenser, H14R.2 Rechargeable Headlamp, Black

  • SPECS: 60-1000 lumens, 70-300 meter range, and up to 35 hours of run time. Weighs 340 g and has adjustable head strap. Water resistance level IPX4..
  • EFFORTLESS FOCUSING: The Advanced Focus System allows you to easily transition from a close-up wide beam to a long-distance focused beam using the one-handed Rapid Focus mechanism..
  • SMART LIGHT TECHNOLOGY: Allows you to program your individual range of functions with different touch and switch combinations so you always have the perfect light mode at hand..
  • ERGONOMIC DESIGN: The light unit, head straps and battery box have been redesigned with a specially formed battery case and more comfortable foam to conform to the natural curve of the user's head. This ensures maximum comfort during extended use..
  • 5 YEAR WARRANTY: We take extraordinary measures so your Ledlenser will give you many years of dependable service. If the product has a defect in material or workmanship or fails to work under normal use, we'll repair or replace it..
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Airmax Riflescope 3-9x40 AO 1 AMX

  • 16 layer fully multi-coated optics for exceptional clarity. Wide view optical system.
  • Glass etched reticle to withstand high recoil. Integrated adjustable objective for parallax adjustment.
  • 1 inch mono-tube chassis for superior strength. 1/4 MOA low profile "no-snag" fingertip turrets.
  • Fast focus eyebell and high torque zoom ring. Threaded objective/ocular for optional accessories.
  • AMX Reticle offers multiple aim points, useful when using air guns with loop trajectories.
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22 FIRE 4-12x40 AO Extended Focus Range T-Plex Dot Rimfire Rifle Scope

  • Features an adjustable objective providing an Extended Focus range allowing the scope to focus from 10 meters to infinity.
  • The T-Plex Dot reticle features a fine crosshair with a .25" Dot (at 50 yards) allowing precise placement of the reticle on typical competitive rimfire targets.
  • Hand Turn windage and elevation adjustments with precise, repeatable and audible 1/4" clicks at 50 yards are easily reset to zero without any tools.
  • TRACT'S Fully Multi-Coated (FMC) optical system applies multiple layers of anti-reflective compounds to every air to glass surface to provide extremely high light transmission with bright, clear images even in low light.
  • SPRING LOADED RESET TO ZERO - Simply lift the turret, turn to line up the zero with the vertical indicator, release and the turret springs back into place.
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