Lets suppose Your image is high (twice higher than the width). First of all You can resize the render window size (CTRL+I) by entering the exact numbers (if Your screen resolution 1600 x 1200 enter width - 600 and hight - 1200 - it will make the render window exactly the size You need) or use mouse to resize the whole Apo window to the proportions You need. Than You can use Ctrl+A (Adjust) to make the render window the optimal size for the flame not to be cropped. In Adjust applet preview You'll see the dimensions of Your resized render window already. Did it help? With kindest regards, -Anthony.