Let us consider an 18mm wide angle lens (spherical) and a 35mm anamorphic lens with a 1.3x squeeze ratio. I understand the principle of the anamorphic lens, in that it squeezes the image onto the sensor horizontally and one can desqueeze the image in post, resulting in a wide image. I also note that a 1.3x squeeze ratio can result in a 2.39:1 aspect ratio.
Based on the above two lenses:
If one wants to shoot using a 2.39:1 aspect ratio for framing, is it correct to say that if the 18mm wide angle lens (non-anamorphic) is used, the top and bottom of the frame would need to be cropped in post to achieve the 2.39:1 aspect ratio? Therefore is it also correct to say that is why anamorphic lens are used because one can shoot straight away using a 2.39:1 aspect ratio when shooting and therefore does not need to crop the top and bottom of the frame in post?
The main point of my question is the fact that I just wanted to know why would folks use an anamorphic lens instead of a wide angle lens.
Based on the above two lenses:
If one wants to shoot using a 2.39:1 aspect ratio for framing, is it correct to say that if the 18mm wide angle lens (non-anamorphic) is used, the top and bottom of the frame would need to be cropped in post to achieve the 2.39:1 aspect ratio? Therefore is it also correct to say that is why anamorphic lens are used because one can shoot straight away using a 2.39:1 aspect ratio when shooting and therefore does not need to crop the top and bottom of the frame in post?
The main point of my question is the fact that I just wanted to know why would folks use an anamorphic lens instead of a wide angle lens.