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What if the Image is Blurry?

This page walks through common causes and solutions for blurry images in the OV80i system.

Focus is on the lens

The OV80i uses a C-mount lens, so focus is adjusted physically on the lens focus ring. There is no focus slider in the software.

Common Causes of Blurry Images​

CauseDescription
Out of FocusLens focus ring not set for the working distance
Long Exposure + MotionPart moves during capture, creating motion blur
Low Light + High GainGain boosts image but reduces clarity
Dirty LensSmudges or debris on the camera lens
Improper MountingWrong distance for selected lens focal length

Fixing Blurry Images​

1. Refocus the Lens​

  • Loosen the lock ring on the lens
  • Rotate the focus ring until the image is sharp
  • Use the live preview to guide the adjustment
  • Re-tighten the lock ring so vibration cannot shift it
Enable Focus View first

In Configure Imaging, tick Enable Focus View in Camera Settings. It highlights edges and shows a focus score, which makes it much easier to find the sharpest point while turning the ring.

2. Check the Working Distance​

  • Confirm the camera is mounted at a distance the lens can actually focus at
  • Every C-mount lens has a minimum object distance — closer than that it cannot focus at all
  • Check the focal length and working distance for your lens in the Lens + FOV Table

3. Shorten Exposure to Reduce Blur​

  • Go to Image Settings
  • Reduce exposure time (e.g., from 10 ms → 3 ms)
  • Useful for moving parts
warning

You may need brighter lighting to compensate.

4. Add or Increase Lighting​

  • Use OV80i's onboard strobe or external lighting
  • Confirm even illumination across the ROI

5. Adjust Gain Sensibly​

  • Too much gain adds noise and reduces clarity
  • Try reducing gain and adding light instead

6. Clean the Lens Cover​

  • Use a microfiber cloth or lens cleaning wipe
  • Avoid alcohol or abrasive solutions

Still Not Sharp?​

  • Use the Test Image button for static validation
  • Compare images to your recipe's training data
  • Retrain if appearance has changed significantly

🔗 See Also​