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! REPORT
Focal Length
3D Render by MjrkSome years ago I made a similar model for a colleague in Cinema 4D to illustrate the effect of ‚focal length‘.
Now I have built a similar model in DAZ-Studio. Perhaps it maybe useful for someone.
I was astonished how the cameras lens distorted objects at the default focal length of 51mm.
In most cases you don’t even see that effect in a photograph, but when you take a picture of a person,
you may notice a broadening effect.
In this model only the focal length of the camera and it’s position has changed, no object was turned around.
Thanks for looking!
Now I have built a similar model in DAZ-Studio. Perhaps it maybe useful for someone.
I was astonished how the cameras lens distorted objects at the default focal length of 51mm.
In most cases you don’t even see that effect in a photograph, but when you take a picture of a person,
you may notice a broadening effect.
In this model only the focal length of the camera and it’s position has changed, no object was turned around.
Thanks for looking!
Useful.
i noticed that focal distorsion. specialy for small "room" (like vehicle intérior) .
i currently use f=50 for curent scene.
40-45 for small space , never less 35 distorsion is too big.
i noticed that focal distorsion. specialy for small "room" (like vehicle intérior) .
i currently use f=50 for curent scene.
40-45 for small space , never less 35 distorsion is too big.
REPLY
! REPORT
Mjrk
Karma: 37,380
Sun, Jul 14, 2024Yes, I added the picture with the focal length of 26 just for fun. Such a short length maybe useful
if you want to advertise a small house for vacations. But certainly not to show a whole figure or a portrait.
if you want to advertise a small house for vacations. But certainly not to show a whole figure or a portrait.
Nice chosen focal point with subjects too. Good thing not to use dof in this one, as it would be the whole point to show the hallway to its full extent, right to the bookshelf.
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Very interesting, thanks for posting this.
REPLY
! REPORT
Mjrk
Karma: 37,380
Mon, Jul 15, 2024Yes, I thought this could be useful for one or the other.
I needed it to understand the side effects of different Focal Length since I know almost nothing about optical physics
(or any other field of Physics)
I needed it to understand the side effects of different Focal Length since I know almost nothing about optical physics
(or any other field of Physics)
I think this just explained so many things, or at least why sometimes in portraits some features look weirdly oversized (not just fish-eyed), so thanks for posting it (and for the responses in kind).
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Mjrk
Karma: 37,380
Sat, Oct 26, 2024Some decades ago there was always a children photographer in a warehouse. The lady who worked there told me she uses a lens with a focal point of 135 (or is it focal distance? - I know nearly nothing about photography). The portrait doesn't look so distorted when you use a longer focal length. At least my portraits got a bit better after this hint 
Very interesting tests.
Usually, a 50mm focals are the most frequently used in photography in 24 x 36, without distortions. There are very interesting info on the web.
Usually, a 50mm focals are the most frequently used in photography in 24 x 36, without distortions. There are very interesting info on the web.
REPLY
! REPORT
Mjrk
Karma: 37,380
Sun, Nov 10, 2024Well, I have made tests with a triangular ruler. At 50 mm you can measure the distortion on the photographed scales.
(What's really astonishing: some people get less distorted than others. I once took a photograph of a mother
and her two children, They looked undistorted while the mother was broadened. But perhaps that is more a
psychological or even neuronal issue since I found the mother so attractive
(What's really astonishing: some people get less distorted than others. I once took a photograph of a mother
and her two children, They looked undistorted while the mother was broadened. But perhaps that is more a
psychological or even neuronal issue since I found the mother so attractive
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