First of all, we want to stipulate that an optics module is only necessary for automatic correction of optical flaws (distortion, vignetting, chromatic aberrations, lack of sharpness). It is not required to have an optics module to work with RAW images (on condition that your camera is supported, which you can check here), and it is always possible to work with TIFF or JPEG image files.
Even if you work without a module, you will still have access to nearly all DxO PhotoLab 4 tools; the only difference is that optical corrections can only be applied manually. Once you have figured out the right manual settings for your images, we advise you to save them as a custom preset in order to be able to apply them later on to similar images (especially if you work with fixed lenses).
We are constantly working to expand our database of DxO modules. To help us set our priorities, you can ask us to develop a DxO optics module for your particular camera-lens combination here.
Before making your request, please do not forget to verify here that the module for your camera-lens combination isn’t already available or under development.