Is 18mm noticeably wider than 24mm?

[Guy R]

I have an a7r2, and my widest lens is the Sony FE24mm f2.8.

I mainly shoot landscapes and I am tempted to buy a used Zeiss Batis 18mm f2.8, but I’m not sure how much of a difference it would make over the 24mm.

Anyone here have these two focal lengths and if so do you tend to use both?

 

[Phormula]

Significantly different.

Roughly, you will get 30% more landscape in the picture and more wide angle effect, i.e. the background looks much farther.

I have a 24 mm and a 20 mm in my full frame (not Sony) equipment, and I end using both.

[Guy R]

Thank you. That makes it easy to visualise.

[Cameratose]

30% more landscape at 1000 meters is a lot more significant than 100 meters. 

I like to think in terms of a given distance. This is a link to a FOV calculator you can play with. It shows angle of view, horizontal and vertical, etc. At 100' meters on a FF camera, the 18mm provides a 200-meter horizontal field of view, whereas the 24mm lens offers 150 meters. 

 Camera Field of View Calculator (omnicalculator.com)