What's the standard practice for visualizing and conceptualizing

>>249240
>Standard
There is no standard. Some companies what big ass jpgs, others want big ass jpgs with red marks, some markup software or website, and occasionally you get a company that wants a printed design layout.

Really, it depends on what your lead wants. I try to make engineers happy, so by default I spend a lot of time on red line documents unless I don't have enough time.

>>249244
..but irl, its photoshop.

>>249259
I personally prefer Illustrator for most of it. Maybe I will that it into photoshop after to add some effects, but mah vectors are mah life.

I used to buy those photoshop layouts from envato before the prices went through the roof. Designing UI starting with code is a shit idea.