In basic theory, you can troubleshoot and potentially solve the problem related to spots on your images as follows:
Troubleshooting Steps
Check the Lens:
Clean the Lens: Make sure the front and rear elements of your lenses are clean. Use a microfiber cloth and lens cleaner.
Test with Another Lens: If possible, try using a different lens to see if the spots persist. This will help determine if the issue is with the camera body or the lens.
Inspect the Sensor Again:
Manual Sensor Cleaning: If the automatic sensor cleaning didn't work, consider doing a manual cleaning with a sensor cleaning kit. Be very cautious and follow instructions carefully.
Check for Dust or Debris: Use a flashlight to inspect the sensor for any dust or debris that may not be visible in normal light.
Test Different Apertures:
Take photos at various apertures (e.g., f/2.8, f/5.6, f/11) to see if the spots are more pronounced at certain f-stops. This can help identify if the issue is related to lens optics or sensors.
Post-Processing:
If the spots are minor, consider using photo editing software (like Adobe Lightroom or Photoshop) to remove them in post-processing.
Check for Firmware Updates:
Ensure your camera's firmware is up to date. Sometimes, firmware updates can fix bugs or issues.
Professional Cleaning:
If the issue persists after trying the above steps, it may be best to take your camera to a professional for a thorough cleaning. They can check for internal issues that may not be easily visible.
Example Photos
If you can share some example photos showing the spots, it would help in diagnosing the problem further. You can upload them to an image hosting site and share the link.
There is a practical problem that I have not applied these theories, but I have brought my camera to the shop. Although my camera is not the same type as yours. The camera repairman reported to me that the humidity in the air has created small mold spots in the lens and I had to buy an additional desiccant for my lens and put them all in a sealed box. You can also try this simple method.
Hexa sortHopefully, one of these steps will help you resolve the issue with your Nikon D610. I can only use English to convey