I replaced my boring 24-70 2.8L with the Sigma 35 1.4 art.
-a 35mm prime force you to take other angles as not everything fits on the image, although it's reasonable wide on FF, the 50mm needs more space.
With a wider 24L most is on the picture, so you can stay lazy at your place like with a zoom, less creativity and you have perspective distortion, which some like/dislike.
-I picked the 35mm for less distortion (portraits) as you know portraits are mostly taken between 85-200mm, 35mm is the minimum for distortion free portraits + background, eg doctor in front of his practice. With the 24L you can't get too close or you get distorted noses, faces,...
I replaced my old 35L this year with the Sigma 35 1.4 Art as it's better in any aspect.
If I need wider for my hobby I use the new gem I recently bought : Tokina 17 f3.5 AT-X Pro.
So the 24 is between the 17 - 35, it's no wide-angle and the 35 is more flattering for portraits.
That's also the reason I never bought a 24 or 50 mm prime, it misses the 2 points above.
AlanU wrote in post #17024898
If you want less distortion the 35mm is your lens..... if your eyes are not enticed by the imagery/subject matter/emotional content by the 35mm "normal perspective" your photos can be boring (dare i say boring???!!!).