To achieve the full resolution of a megapixel camera, it is essential to use a high quality megapixel lens.
Overall image quality is greatly affected by the quality of the optical image shot onto the image sensor.
Megapixel lenses provide high contrast, brightness and sharpness across the entire image plane.
Non-megapixel lenses will not fully display the resolution of megapixel sensor, especially in the corner area of the image.
Professional Lens Supplier - CCOM Electronics