Question:

My camera shows a linear light around the source and it seems to spread. Is this a defect?

Answer :

No, this is a common occurrence known as lens flares. It happens when you take photos in backlit conditions, such as when the sun or bright light is near the edge of the frame. It can also happen due to fingerprints or debris on the lens. To minimize this effect, try positioning the subject away from the bright light or clean the lens using a circular motion to remove any particles. Keep in mind that the exact results may vary depending on the lens specifications and the type of foreign material present on the lens.