Fisheye lenses are very special lenses, which are suitable for taken 360° panoramas for example. However as they have a very large distortion and field of view those lenses are not suitable for many other applications. With software such distortion can be corrected. The OM-D E-M1 series has this correction already built-in to the camera firmware. The advantage is that you can already see the effect before you take the image, which helps you to compose your image. This technology makes the 8mm F1.8 a very wide angle lens which is unique in the market.
1 Press „Menu“ and browse to menu J1 Camera Utility.
2 Select „Fisheye Compensation“ and press „OK“. Select „OK“ and press right arrow key.
3 Choose „Angle“ and press „Arrow Key right“
4 to select angle of view and press 3x „OK“
1 = 5.5mm / 123° / 2=7 mm / 114° / 9 mm / 100°
5 In camera fisheye compenstation is indicated in the screen with shown symbol. The number beside the symbol indicates the angle of view you have choosen
6 You could program a FN button to have direct access to this function and switch between the different focal length / field of view. It works in the same way as for Live ND filter, please have a look into „Program functional button for Live ND filter switch“