Manual:Default Render Options

Animation
Sets the frames to render 
 * Initial Frame The first frame to render.
 * Final Frame The last frame to render

Anti-Aliasing
Tells POV-Ray if and how it should use scene anti-aliasing. For more details about it and the meaning of each field see the POV-Ray manual. 

Output
Tells POV-Ray if and how to save the rendered image.

Output

 * Save Rendered Image If checked POV-Ray will save the rendered image to disc, otherwise the rendered image will be discarded.
 * Output Alpha Channel Replace the areas where the background is visible in the rendered image for transparent areas.
 * File Type Select the image file format to save the rendered image:
 * TGA (RLE) - Compressed Targa-24 format (RLE, run length encoded)
 * TGA - Uncompressed Targa-24 format
 * PNG - Portable Network Graphics format
 * PPM - Portable Pixmap Format
 * BMP - Windows Bitmap Format

Dimensions
Sets the width and height of the image to be rendered and specifies if and how Bishop3D should match the image and render camera aspect ratio. 
 * Width The width of the rendered image in pixels
 * Height The height of the rendered image in pixels
 * Preserve Camera Aspect Ratio If checked Bishop3D will disable the height edit box and automatically set the image height based on the image width and the render camera aspect ratio
 * Adjust Camera Aspect Ratio If checked Bishop3D will change the render camera aspect ratio in the exported pov file to match the image aspect ratio
 * Allow Image Deformation If checked Bishop3D will ignore any issues regarding mismatched render camera and image aspect ratios

Quick Render
Sets the quick render quality

Overrides

 * Do not save rendered image Discard rendered image.
 * Do not use anti-alias Ignore any anti-alias setting.