Saving the rendered image as a layer in a PSD file is an easy task; PSD-Manager 41-Year Subscription can do this and much more. It lets you add all render elements of your scene as layers to a PSD file. No more trouble to compose dozens of render elements, because presets and automatic layer sorting make it a breaze to setup the correct layer order. You may also manually control the blending modes along with the order of the layers. But PSD-Manager 4 doesn't stop there. What you really need during post production and for last minute changes are accurate anti-aliased selections/masks. That's why PSD-Manager 4 allows you to add selections or layers for each object/material of your choice to the final PSD.
Gone are the days when you had to draw selections by hand or to render time-consuming additional passes to get them. To give you even more possibilities to spice up your images you can even add G-Buffer Channels to the PSD file. All that PSD-Manager 4 relies on 3ds Max core capabilities, like the G-Buffer and render elements, which make it fast, extendable and in addition, open to all renderers.