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The original was posted on /r/midjourney by /u/issafly on 2024-09-12 21:09:41+00:00.

TL;DR putting in a bunch of jargon about camera, lens, and settings makes no real difference* to the generated image.

There was a short discussion in the comments of this post about whether specifying camera models, lenses, and settings in a prompt made any difference in the outputs. I ran a prompt using different permutations with the same seed. Here’s the base prompt:

Portrait of a family outdoors surrounding a smoking BBQ, soft natural lighting, shallow depth of field, shot with a Nikon D850 and 70-200mm f/2.8E FL ED VR lens at 200mm at aperture {f/2.8, f/4, f/7, f/10, f/16, /f22} --ar 7:4 --seed 1554 --v 6.1 --s 250 --style raw

I took that base prompt from down the page on this website where they were comparing prompts (not very scientifically, though).

Here’s the outputs compared:

As you can see, there’s no difference. If you know anything about photography you’ll immediately notice that the difference between the backgrounds from f/2.8 to f/22 should be HUGE. They’re not. I can’t tell any difference at all. I’m looking specifically at the sharpness in the tree bark and foliage. At f/2.8 the background should be much blurrier and out of focus. At f/22 the background should have much more detail. There should be a noticeable increase in background clarity as you go from photo to photo. They’re pretty much identical.

I also did 2 other sets. One was the same, but at 35mm instead of 200mm. The 35mm set looks just like the 200mm.

In the 3rd set, I varied the focal length (14mm, 35mm, 50mm, 85mm, 105mm, and 200mm) all at f/2.8. I’m not going to bother posting the results, because there’s no difference. They all looked like they were taken at the same camera settings from one image to the next. As with aperture, the difference between a photo at 14mm and a photo of the same scene at 200mm (adjusting shooting distance to match the frame and crop) should be HUGE. They were nearly the same image regardless of which aperture or focal length I put into the prompt.

*NOTE: Specifying styles that come from specific types of cameras or film stock WILL make difference in the outputs. For example, prompts that include “Kodachrome” or “Polaroid” or “disposable camera” will be in that style.