Undo Lighting and Autosave Render

[Sandra Reid]

A couple of features I would like to see implemented in future versions would be:

1) Undo Lighting - To be able to undo lighting you have applied in the lighting widow would be great as it is so easy to make a mistake and it would also allow for greater creativity.

2) Autosave Renders -so that the render picks up where it left off should you have a power cut (It has happened to me, such a nuisance with large renders).

[Garth Thornton]

Thanks, Sandra.
To clarify, do you mean undo/redo for the lighting settings just for previewing, so you can go back a number of edits? Or to undo applying the lighting to the full picture?
The first would be useful in general. The second is only helpful when using reflection/refraction parameters that will affect the result of applying lighting again.
I've been putting off lighting undo because memory spots mitigate the first case somewhat, and I want to redesign lighting first.

Save/resume rendering is in the wishlist, and autosave would be a useful addition to that.