For the first exercise we made hdrs with Adobe lightroom which I used 4 images at different exposures
Although I couldnt find a way to lock focus on my camera it still gave me a clean result
I believe the software chooses the best focused image as the base template.
For the secound task we added a hdri Image as dome lighting
I made my own custom materials to show of the reflections. Hdris are most used in video games for the distant backgrounds.