The real name of this company is Anhui ChangGeng Optical Technology Company, and is based in Anhui China. The company mainly makes macro and wide angle lenses.
Thom Hogan
In-depth coverage of the Nikon Z Mount Cameras and Lenses Since the System's Birth
Site Navigation[Skip]
- Z System User
- News/Views
- Cameras
- Z Camera Reviews
- Nikon Z Camera Database
- Nikon Z5 Specs
- Nikon Z5II Specs
- Nikon Z6 Specs
- Nikon Z6II Specs
- Nikon Z6III Specs
- Nikon Z7 Specs
- Nikon Z7II Specs
- Nikon Z8 Specs
- Nikon Z9 Specs
- Nikon Zf Specs
- Nikon Z30 Specs
- Nikon Z50 Specs
- Nikon Z50II Specs
- Nikon Zfc Specs
- Nikon ZR Specs
- RED Komodo Specs
- RED Raptor-X Specs
- RED Raptor-X Specs
- Where are Z's Made?
- Z Camera Articles
- Common Camera Problems
- The Z9 in Africa Blog
- A Nikon Z Mirrorless Safari
- Smaller and Lighter, or Not?
- Comparing Nikon Z to Sony A
- Recommended Z50 Kit
- Thom's Zfc Quick Advice
- Using a Z as a Webcam
- Z System Upgrade Advice
- Z Warranties/Repairs
- Self Service Camera Repair
- Sensor Read-Out Speeds
- The Z Camera Update Timeline
- File Types Created or Used by Nikon Z System Cameras
- Z System Connector Pinouts
- Lenses
- Z-Mount Lens Articles
- Common Lens Problems
- About Z-mount Lenses
- Lens FAQ
- Self Service Lens Repair
- Categorizing The Z Nikkors
- Lens Sizes and Nicknames
- Travel Lens Combos (2022)
- Best Telephoto Options in the Z Mount
- The Second Safari Lens
- Rational Z DX Lens Kits
- Macro Lens Info
- Missing Patented Lenses
- More About VR
- Clearing Up Aperture Confusion
- Nikon Lens Terminology
- Nikon FX Lens Reviews
- 20mm f/1.8 S Review
- 24mm f/1.8 S Review
- 28mm f/2.8 Review
- 35mm f/1.8 S Review
- 40mm f/2 Review
- 50mm f/1.2 S Review
- 50mm f/1.8 S Review
- 50mm f/2.8 MC Review
- 85mm f/1.2 S Review
- 85mm f/1.8 S Review
- 105mm f/2.8 VR S Review
- Nikon 135mm f/1.8 Review
- 400mm f/2.8 TC VR S Review
- 400mm f/4.5 VR S Review
- 600mm f/6.3 VR S Review
- 800mm f/6.3 PF VR S Review
- 14-24mm f/2.8 S Review
- 14-30mm f/4 S Review
- 17-28mm f/2.8 Review
- 24-50mm f/4-6.3 Review
- 24-70mm f/2.8 S Review
- 24-70mm f/4 S Review
- 24-120mm f/4 S Review
- 24-200mm f/4-6.3 Review
- 28-75mm f/2.8 Review
- 28-400mm f/4-8 VR Review
- 70-180mm f/2.8 Review
- 70-200mm f/2.8 VR S Review
- 100-400mm f/4.5-5.6 VR S Review
- 180-600mm f/5.6-6.3 VR Review
- Nikon DX Lens Reviews
- Current Zoom FX Nikkors
- Nikkor Zoom Lens Optical Designs
- 14-24mm f/2.8 S
- 14-30mm f/4 S
- 17-28mm f/2.8
- 24-50mm f/4-6.3
- 24-70mm f/2.8 S
- 24-70mm f/2.8 S II
- 24-70mm f/4 S
- 24-120mm f/4 S
- 24-200mm f/4-6.3 VR
- 28-75mm f/2.8
- 28-135mm f/4 PZ
- 28-400mm f/4-8
- 70-180mm f/2.8
- 70-200mm f/2.8 VR S
- 100-400mm f/4-5.6 VR S
- 180-600mm f/5.6-6.3 VR
- Current Prime FX Nikkors
- Nikkor Prime Lens Optical Designs
- 20mm f/1.8 S
- 24mm f/1.8 S
- 26mm f/2.8
- 28mm f/2.8
- 35mm f/1.2 S
- 35mm f/1.4
- 35mm f/1.8 S
- 40mm f/2
- 50mm f/1.2 S
- 50mm f/1.4
- 50mm f/1.8 S
- 50mm f/2.8 macro
- 58mm f/0.95 NOCT
- 85mm f/1.2 S
- 85mm f/1.8 S
- 105mm f/2.8 VR S macro
- 135mm f/1.8 S
- 400mm f/2.8 TC VR S
- 400mm f/4.5 VR S
- 600mm f/4 TC VR S
- 600mm f/6/3 PF VR S
- 800mm f/6.3 PF VR S
- Current DX Nikkors
- Lenses with Firmware Updates
- Lenses With Shutter Restrictions
- Nikkor Lens Filter Sizes
- Where Are Z Lenses Made?
- Third-Party Lenses
- 3rd Party Lens Reviews
- 7Artisans 60mm f/2.8 MF
- Laowa 9mm f/2.8 MF
- Laowa 25mm f/2.8 macro MF
- Meike 25mm f/1.8 MF
- Meike 50mm f/1.7 MF
- Opteka 420-800mm MF
- Tamron 35-150mm f/2-2.8 Di III Lens Review
- Tamron 50-400mm f/4.5-6.3 Lens Review
- Tamron 70-300mm f/4.5-6.3 Lens Review
- TTartisans 11mm f/2.8 MF
- Viltrox 23mm f/1.4 AF
- Viltrox 56mm f/1.4 AF
- Viltrox 85mm f/1.8 AF
- Voigtlander 40mm f/1.2 Lens Review
- Voigtlander 65mm f/2 Macro Lens Review
- 3rd Party AF lenses
- 7Artisans
- AstrHori
- Brightin Star Autofocus Lenses
- Kase
- Laowa
- Meike
- SG-Image
- Sigma
- Sirui
- SG-Image
- SG-Image
- Tamron
- TTartisans
- Viltrox
- 9mm f/2.8 AF DX
- 13mm f/1.4 AF DX
- 14mm f/4 AF FX
- 13mm f/1.4 AF DX
- 13mm f/1.4 AF DX
- 20mm f/2.8 AF
- 23mm f/1.4 AF
- 24mm f/1.8 AF
- 25mm f/1.7 AF DX
- 27mm f/1.2 DX
- Viltrox 28mm f/1.8 Lens Specifications
- 33mm f/1.4 AF
- 35mm f/1.7 AF
- 35mm f/1.8 AF
- 40mm f/2.5 AF
- 50mm f/1.8 AF
- 50mm f/1.8 AF
- 56mm f/1.4 AF
- 56mm f/1.4 AF
- Viltrox 75mm f/1.2 Pro Lens Specifications
- 85mm f/1.8 AF
- 85mm f/1.8 AF
- Yongnuo
- 3rd Party MF lenses
- 7Artisans
- 7.5mm f/2.8 fishehe MF
- 9mm f/5.6 MF
- 10mm f/2.8 fisheye MF
- 10mm f/2.8 fisheye MF
- 12mm f/2.8 MF
- 14mm f/2.8 MF
- 15mm f/4 MF
- 18mm f/6.3 MF
- 18mm f/6.3 MF
- 25mm f/0.95
- 35mm f/1.2 MF
- 35mm f/0.95 MF
- 35mm f/1.4 MF
- 35mm f/1.4 MF
- 35mm f/5.6 MF
- 50mm f/1.05 MF
- 50mm f/1.05 MF
- 55mm f/1.4 MF DX
- 60mm f/2.8 MF Macro
- 60mm f/2.8 MF Macro
- 60mm f/2.8 MF macro
- Artralab
- AstrHori
- Brightin Star
- Funleader
- Irix
- KamLan
- Kase
- Kipon
- Laowa
- 4mm f/2.8 fisheye DX MF
- 4mm f/2.8 fisheye DX MF
- 7.5mm t/2.9 MF
- 8-15mm f/2.8 fisheye FX MF
- 8-16mm f/3-5-5 DX MF
- 9mm f/5.6 MF
- 9mm f/2.8 DX MF
- 10mm f/4 DX MF
- 10-18mm f/4.5-5.6 MF
- 11mm f/4.5 MF
- 12mm f/2.8 MF
- Laowa 12-24mm f/5.6
- Laowa 12-24mm f/5.6 Shift Lens Specifications
- 14mm f/4 MF
- 15mm f/2 FX MF
- 15mm f/4.5 FX MF
- 15mm f/2 FX MF
- 15mm f/2 MF Shift
- 20mm f/4 MF Shift
- 24mm f/14 macro probe MF
- 25mm f/0.95
- 25mm f/2.8 MF Macro
- 25mm f/2.8 MF Macro
- 33mm f/0.95 DX MF
- 35mm f/0.95 FX MF
- 35mm f/2.8 TS FX MF
- 35mm f/0.95 FX MF
- 58mm f/2.8 macro DX MF
- 65mm f/2.8 macro DX MF
- 85mm f/5.6 macro (MF)
- 65mm f/2.8 macro DX MF
- 100mm f/2.8 MF Macro
- 35mm f/0.95 FX MF
- Lomography
- Meike
- Meyer-Optik
- Mitakon
- Kase
- Nisi
- Opteka
- Pergear
- PolarPro
- Rockstar
- Samyang
- SG-Image
- Sirui
- Thypoch
- Tokina
- TTartisans
- 7.5mm f/2 fisheye DX MF
- 10mm f/2 MF DX
- 11mm f/2.8 MF
- 14mm f/2.8 MF
- 17mm f/1.4 MF
- 21mm f/1.5 MF
- 21mm f/1.5 MF
- 25mm f/2 MF
- 35mm f/1.4 MF
- 35mm f/1.4 MF
- 40mm f/2.8 macro MF
- 50mm f/0.95 MF DX
- 50mm f/1.2 MF DX
- 50mm f/1.2 MF DX
- 50mm f/2 MF
- 75mm f/1.4 MF
- 100mm f/2.8 MF Macro
- 100mm f/2.8 MF Macro
- 100mm f/2.8 MF Macro
- 100mm f/2.8 MF Macro
- Viltrox
- Voigtlander
- Zeiss Lenses
- Zhongyi Optics
- 7Artisans
- 3rd Party Lens Reviews
- Adapters & Converters
- Tripod Collars and Feet
- Z-Mount Lens Articles
- Accessories
- Z Books
- Mastering Nikon JPEGs
- Mastering Nikon Customization
- Nikon Z5 Guide
- Nikon Z5II Guide
- Nikon Z6/Z7 Guide
- Nikon Z6II/Z7II Guide
- Nikon Z6III Guide
- Nikon Z8 Guide
- Nikon Z9 Guide
- Nikon Z50 Guide
- Nikon Z50II Guide
- Configuring/Using Zf
- Configuring/Using Zfc
- byThom Books FAQ
- Are your books just rewrites of the manual?
- Why can't I find your works in bookstores?
- Why can't I find your works in the Kindle (Nook, Apple, Android) store?
- Do you ever update your works?
- What do your books work on?
- Can I copy the eBook file to my other computers?
- What Happens if I Lose my Downloaded File?
- How Do I Get Updates for my Book?
- Can I Buy a Printed Copy of Your Books?
Looking for other photographic information? Check out our other Web sites:
DSLRS: dslrbodies.com | mirrorless: sansmirror.com | general/technique: bythom.com | film SLR: filmbodies.com
Mission statement | Code of Ethics | Privacy Info | Sitemap
text and images © 2025 Thom Hogan
All Rights Reserved — the contents of this site, including but not limited to its text, illustrations, and concepts,
may not be utilized, directly or indirectly, to inform, train, or improve any artificial intelligence program or system.
Advertisement:
DSLRS: dslrbodies.com | mirrorless: sansmirror.com | general/technique: bythom.com | film SLR: filmbodies.com
Mission statement | Code of Ethics | Privacy Info | Sitemap
text and images © 2025 Thom Hogan
All Rights Reserved — the contents of this site, including but not limited to its text, illustrations, and concepts,
may not be utilized, directly or indirectly, to inform, train, or improve any artificial intelligence program or system.
Advertisement:
