Hello, I recently bought E-M5 with a grip and 12-40/2.8 and have been using it for a while now as travel camera. Last summer I visited Cyprus and took a few long exposure photos with E-M5 attached to a gorillapod. The resulting images were surprinsingly noisy even at the lowest base iso. I'm wondering if my copy of the camera has some sort of defect or if it's supposed to be like this. One example of the color noise can be found from here http://vkphoto.sunlevy.com/forum/base-iso-kohina-1.jpg. You can find the color noise by looking at the sky. This seemed to only affect exposure times over 10 seconds and not anything below that. The temperature outside was somewhere around 25 to 30 degrees celcius. What do you think? Thank you in advance!