1. Introduction
The Samyang 8mm f/3.5 Aspherical IF MC Fisheye lens is an ultra-wide angle lens designed for cameras with APS-C or smaller sensors. Its optical construction features 10 elements in 7 groups, including an aspherical hybrid lens. The lens incorporates a multilayer anti-reflection coating (UMC) to enhance optical performance, minimize flare, and reduce ghosting. The aperture consists of six diaphragm blades and can be set to f/22 for extensive depth-of-field. A built-in lens hood helps prevent unwanted light. This lens provides a 180-degree diagonal field of view, offering unique photographic perspectives.
Image 1.1: Front view of the Samyang 8mm f/3.5 UMC CS II Fisheye Lens with its integrated lens hood.
2. Package Contents
Please verify that all items listed below are included in your product package:
- 1x Samyang 8mm f/3.5 UMC CS II Fisheye Lens (for Canon EF-S mount)
- 1x Front Lens Cap
- 1x Rear Lens Cap
- 1x Lens Pouch
Image 2.1: Illustration of the items included in the lens package, showing the lens, front and rear caps, and a lens pouch.
3. Key Features
- Ultra Wide-Angle Fisheye: 8mm focal length with an exaggerated perspective for dramatic photographic effects.
- Broad Field-of-View: Offers an ultra-wide 180° diagonal field-of-view, optimized for APS-C size image sensors.
- Advanced Optical Design: Constructed with hybrid aspherical lenses to deliver sharp, well-defined images.
- UMC Coating: Features a multi-layer anti-reflection ultra multi-coating (UMC) to effectively minimize lens flare and ghosting.
- Close-Up Capability: Minimum focusing distance of 0.3 meters (12 inches) for enhanced close-up photography.
4. Applications
The Samyang 8mm f/3.5 UMC CS II Fisheye Lens is particularly well-suited for capturing unique perspectives in various photographic genres due to its ultra-wide field of view and distinct fisheye effect. It excels in situations where a broad, immersive view is desired.
- Architecture: Capture entire buildings or interior spaces with dramatic distortion.
- Artistic Photography: Create surreal and imaginative images with exaggerated perspectives.
- Nature: Encompass vast landscapes, forests, or celestial scenes.
- Travel: Document travel experiences with a wide, encompassing view of locations.
- Landscape: Ideal for expansive landscape shots, adding a creative twist.
Image 4.1: Examples of photographic applications for the Samyang 8mm Fisheye Lens, including architecture, nature, and travel scenes.
5. Setup and Installation
5.1 Attaching the Lens
- Ensure your camera is turned off.
- Remove the rear lens cap from the Samyang 8mm lens and the body cap from your camera.
- Align the red index mark on the lens barrel with the corresponding red index mark on your camera's lens mount.
- Insert the lens into the camera mount and rotate it clockwise until it clicks into place. Do not force the lens.
5.2 Detaching the Lens
- Ensure your camera is turned off.
- While pressing the lens release button on your camera body, rotate the lens counter-clockwise until it stops.
- Carefully remove the lens from the camera mount.
- Attach the rear lens cap to the lens and the body cap to your camera to protect them from dust and damage.
Image 5.1: Rear view of the Samyang 8mm lens, showing the Canon EF-S mount interface.
6. Operating the Lens
6.1 Manual Focus
This is a manual focus lens. To achieve sharp images, rotate the focus ring on the lens barrel until your subject appears clear in the viewfinder or on the camera's LCD screen. For fisheye lenses, a common technique is to set the focus to a specific distance (e.g., 1 meter or 3 feet) and rely on the extensive depth of field to keep most of the scene in focus, especially at smaller apertures.
6.2 Aperture Control
The lens features an aperture ring on the barrel. To control the aperture directly from your camera body (if supported), set the lens's aperture ring to its smallest aperture value (f/22). This allows the camera to electronically control the aperture setting. If your camera does not support electronic aperture control with this lens, you will need to adjust the aperture manually using the ring on the lens.
6.3 Exposure Settings
Since this is a manual lens, you may need to set your camera to Manual (M) or Aperture Priority (Av/A) mode. In Manual mode, you control both aperture (via the lens ring or camera, as described above) and shutter speed. In Aperture Priority mode, you set the aperture, and the camera automatically selects the appropriate shutter speed.
7. Maintenance and Care
7.1 Cleaning the Lens
- Use a soft, lint-free cloth or a lens brush to remove dust from the lens surfaces.
- For smudges or fingerprints, apply a small amount of lens cleaning solution to a clean microfiber cloth and gently wipe the lens in a circular motion from the center outwards.
- Never use abrasive materials or harsh chemicals on the lens elements.
7.2 Storage
- Always attach the front and rear lens caps when the lens is not in use.
- Store the lens in a cool, dry place, away from direct sunlight and extreme temperatures.
- If storing for extended periods, consider using a dehumidifying agent to prevent mold growth.
8. Troubleshooting
8.1 Images are blurry or out of focus
- Manual Focus: Ensure you are manually focusing correctly. Rotate the focus ring until your subject is sharp.
- Camera Settings: Verify your camera is set to a manual focus mode.
- Depth of Field: At wider apertures (smaller f-numbers), the depth of field is shallower, requiring more precise focus. Try stopping down the aperture (larger f-number) to increase the depth of field.
8.2 Cannot control aperture from camera
- Aperture Ring Setting: For electronic aperture control via the camera, ensure the lens's aperture ring is set to its smallest aperture (f/22).
- Camera Mode: Ensure your camera is in an appropriate mode (e.g., Aperture Priority or Manual) that allows aperture control.
8.3 Dark or underexposed images
- Exposure Settings: As this is a manual lens, the camera may not automatically set the correct exposure. Adjust your camera's ISO, shutter speed, or aperture to achieve proper exposure.
- Metering Mode: Experiment with different metering modes on your camera.
9. Technical Specifications
| Feature | Detail |
|---|---|
| Model Number | 7616 |
| Focal Length | 8mm |
| Maximum Aperture | f/3.5 |
| Minimum Aperture | f/22 |
| Lens Construction | 10 elements in 7 groups (1 Aspherical) |
| Angle of View | 180 degrees (diagonal for APS-C) |
| Minimum Focus Distance | 0.3m (12 inches) |
| Focus Type | Manual Focus |
| Diaphragm Blades | 6 |
| Filter Diameter | N/A (Built-in lens hood) |
| Dimensions (Max) | 75 x 74.8 mm (2.95 x 3.07 x 3.07 inches) |
| Weight | 14.1 ounces (approx. 400g) |
| Compatible Mountings | Canon EF-S |
Image 9.1: Technical specifications and dimensions of the Samyang 8mm f/3.5 UMC CS II Fisheye Lens.
10. Camera Compatibility
This lens is designed for Canon EF-S mount cameras with APS-C sensors. Compatible models include, but are not limited to:
- Canon EOS 850D
- Canon EOS 90D
- Canon EOS 250D
- Canon EOS 2000D
- Canon EOS 4000D
- Canon EOS 200D
- Canon EOS 77D
- Canon EOS 800D
- Canon EOS 1300D
- Canon EOS 80D
- Canon EOS 750D/EOS 760D
Image 10.1: Visual representation of compatible Canon EF-S mount cameras for the Samyang 8mm Fisheye Lens.
11. Warranty and Support
For information regarding warranty coverage, technical support, or service, please refer to the official Samyang website or contact your local authorized Samyang dealer. Keep your purchase receipt as proof of purchase for warranty claims.
