At the 25mm end the story is similar at the center of the frame, with slightly sharper results wide open than stopped down to F6.

Spherical aberration has been controlled throughout the range of focal lengths to eliminate compensation of changes in back focus with aperture. Credit is provided by Novuna Personal Finance, a trading style of Mitsubishi HC Capital UK PLC, authorised and regulated by the Financial Conduct Authority.

If both sensors have the same number of pixels, the amount of light reaching each pixel for the same image is exactly the same.

The LM12-5MP NON DISTORTION series are high resolution lenses designed for board level cameras or cs-mount cameras in combination with a CS-mount to m12 adapter with a 1/2" sensor or smaller, to create sharp distortion free images. This means a 25mm focal length lens in MFT gives the equivalent view of a 50mm standard lens in the 35mm format.There's certainly an argument to be made for primes in the creative process, and I do shoot on them regularly, but for ENG work - my holy trinity of zooms can't be replaced. This is not the case, for the lens is a half the distance to the sensor surface and captures twice as much light. Not only does it perform smooth aperture changes so there are no sudden jumps in exposure, it also boasts a silent design for enhanced capture of the scene’s audio.