Photography: FOTGA Lens Bellows and Macro Focusing Slide Rail for Canon 550D 600D 650D 1100D 50D 40D 450D 7D..... DSLR SLR - FOTGA
Photography: Fotodiox 07LAm42fb Pro Lens Mount Adapter, M42 Lens Focusing Helicoids - 16MM to 30MM for Carl Zeiss, Pentax - Fotodiox Inc.
Photography: CamDesign High Fashion Soft Silicone Circlet-band to Prevent Zoom Lens "Creep" by Applying Around Camera Lens Focusing Ring 70 - 200 mm One size fits all lenses (3 Pieces, Teal) - Cam Design
Photography: Datacolor SpyderLensCal SLC100 - Datacolor
Photography: Neewer? Easy Zoom ocusing Adjustment Follow Focus Handle Lever for Camera Lens (Blue A) - Neewer
Home Improvement: UltraFire? Mini Cree Led Flashlight Torch Adjustable Focus Light Lamp - Ultrafire
Photography: SUNWAYFOTO 72mm 72 Adjustable Lens Focus / Focusing /Zoom / Filter Handle / Lever DRH-70 DRH70 Sunway - SUNWAYFOTO
BISS: Promotion Set: OMAX 40X-2000X Lab LED Binocular Compound Microscope with Double Layer Mechanical Stage + 100 Glass Blank Slides & Covers + 100 Lens Cleaning Paper - OMAX
Photography: Neewer? Easy Zoom Focusing Adjustment Follow Focus Handle Lever for Camera Lens (Black A) - Neewer
Photography: Vivitar Series 1 70-210mm 1:3.5 70-210 F3.5 Macro focusing autp zoom - Manual Lens for Minolta MD/MC SLR camera - Vivitar
Photography: Lens Focus Focusing Zoom Unit For Samsung WB200 WB250 WB280 WB200F WB250F WB280F Replacement Part No CCD Black - Skiliwah
Photography: Rokinon Super-Fast T1.5 Cine 3 Lens Kit - 35mm + 24mm + 85mm for Canon + Protective Photography Hard Case + Accessory Kit - Rokinon
Single Detail Page Misc: Klus 00220 - 39.4 in. Clear Mounting Channel Lens - Focusing - S Cover - For LED Tape Light - Klus Design
Photography: Fotodiox Pro Lens Mount Adapter w/ Dandelion AF Focus Confirmation Chip and focusing barrel, Mamiya RB67 Lens to Canon EOS Camera - Fotodiox
Photography: Fotodiox Pro Lens Mount Adapter, M42 (42x1mm) Screw Mount Lens to Micro 4/3 (MFT) Mirrorless Digital Cameras with Macro Focusing Helicoid - Panasonic Lumix, Olympus Pen, OM-D, etc - Fotodiox
Health and Beauty: Focus Specs Adjustable Reading Glasses (+0.5 to +4.5) (Brown) - FocusSpecs
Photography: CamDesign High Fashion Teal Soft Silicone Circlet-band to Prevent Zoom Lens "Creep" by Applying Around Camera Lens Focusing Ring 70 - 200 mm One size fits all lenses - Cam Design
Photography: Canon EF 50mm f/1.8 II Camera Lens - Canon
Photography: Quantaray NF AF 28-80mm F 3.5-5.6 D Macro Focusing type D lens for Nikon Film or DSLR Camera - Quantaray
Photography: EHEAR E2 Wearable Pocket Outdoor Sports Action Video Cam Camera Mini Camcorder Car DVR w/ Wireless Bluetooth Headphones Handsfree with APP for Samsung Galaxy CORE Note 3 Note 4 S4 S5 Sony Xperia Z3 HTC Etc - RockBirds
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Focusing Lens Popular Q&A
Q: What is fluid focus lens?
A: It is a lens made up of two miscible fluid of different refractive index: one a electrically conducting aqueous solution and the other an electrically non-condu... Read More »
Q: How To Tighten A Focus Lens?
A: I would venture. in fact I would wager that you can't. This, of course, is a very old camera and has probably taken who knows how many thousands of frames. If y... Read More »
Q: What Is a Front-Focusing Lens?
A: Front focusing in the lens occurs when there is an internal calibration issue that result in the lens focusing on a point that is shallower in depth than the in... Read More »
Q: What is the best, sharpest Nikons manual focus lens?
A: I don't know what type of wide angle shooting you plan to do but I would suggest a 28mm Nikon compatible lens. All of the brand names have good lens. I would st... Read More »