Exposure blending
Blending should take highlights from darker frames and shadows from brighter ones without leaving a halo around the window bar. That is the core of HDR interiors. HDRPhoto automates this step; Lightroom and Photoshop do it by hand.
Colour correction
Neutral walls matter more than vivid cushions. Correct the room so cream looks like cream in every photograph, then leave local colour alone. Mixed lighting is covered in more depth in the blog.
Vertical correction
Wide lenses tip verticals inwards. A modest keystone correction is expected on property work. Over-correcting makes rooms look wider than they are. HDRPhoto applies bounded vertical correction; you can still refine geometry in the studio.
Window detail, noise and sharpness
Keep enough outdoor contrast that the view reads as glass, not a pasted postcard. Do not sharpen noise in dark corners. A light, even sharpening for web is enough for portals.
Natural saturation and consistency
If one kitchen is warmer than the next, buyers notice. Process the set on the same path, then spot-check three rooms side by side before you deliver. Export sRGB JPEGs unless a client has asked for something else.
For the automatic version of this path, read how HDRPhoto works.