Originally posted by Lev Agree. I often see reviews of fast 50mm lenses where they shoot landscapes. As you say it's ok but main purpose of it is to work with very shallow depth of field. Products or portrait photography where you can easily isolate your point of interest in very small area. But I wouldn't say it's only suitable to shoot in studio though.
My 'studio comment' surrounds the size and weight of the new DFA50 in addition to it's difficulty in perhaps nailing those wide apertures in 'real life moving targets'.
I'm a prime lens shooter, when I do events or even stuff for fun I think carefully about what lenses I bring along. I did sell my Samyang 85/1.4 and invested in a FA77 (and collected a FA43 too) just because they are so small and easy to bring with. Taking even the Sammy 85 out to an event made things more awkward, I got frustrated on the number of occasions I struggled to fit into some of the
many lens pouches I have, it took up too much space, hard to fit in and typically could only be stowed away in one place (unlike the other smaller lenses that could interchange easily their pouch positions).
Prime lens shooting can mean fluid lens swapping, I'm not saying it's impossible to do on a job with some little and large lenses, but I always feel its much more comfortable with a bunch of smaller roughly equal sized lenses.
You might think I'm being pedantic, but when you go shooting at a rock concert and have to have quick fluid lens swapping, you do have to deal with practical issues that casual walkaround shooters don't fret over. By all means some will most definitely be ok going out for a walk with taking just the DFA50, it all depends what kinda shooter you are and what pressures you face.
For me if I had this lens I would just set up my K-1 on a tripod in a studio and it would never come off