[a / b / c / d / e / f / g / gif / h / hr / k / m / o / p / s / t / u / v / vg / vm / vmg / vr / vrpg / vst / w / wg] [i / ic] [r9k / s4s / vip] [cm / hm / lgbt / y] [3 / aco / adv / an / bant / biz / cgl / ck / co / diy / fa / fit / gd / hc / his / int / jp / lit / mlp / mu / n / news / out / po / pol / pw / qst / sci / soc / sp / tg / toy / trv / tv / vp / vt / wsg / wsr / x / xs] [Settings] [Search] [Mobile] [Home]
Board
▼ Settings Mobile Home
/p/ - Photography

Name
Options
Comment
Verification
4chan Pass users can bypass this verification. [Learn More] [Login]
File
  • Please read the Rules and FAQ before posting.

08/21/20New boards added: /vrpg/, /vmg/, /vst/ and /vm/
05/04/17New trial board added: /bant/ - International/Random
10/04/16New board for 4chan Pass users: /vip/ - Very Important Posts
[Hide] [Show All]


[Advertise on 4chan]


File: exx6qe1nhzzh1.jpg (1.43 MB, 3840x2817)
1.43 MB JPG
Lens distortion always irks me, and I always correct them in post process. I like my photos to have straight paralel vertical lines too.

Was this taken maybe with something with a big film like a medium format? I assume this should be taken with a lens that has a long focal length...but then it doesnt make sense for indoors.
>>
>>4538272
tlit sifht
>>
>>4538274
I see. I thought those were only useful for making miniature like shots. Thanks!

So thats how these kinds of photos were made.
>>
>>4538276
It's called perspective control. On large format your front standard controls the focal plane and the back controls perspective.
>>
File: IMG_6078.jpg (4.87 MB, 4967x2794)
4.87 MB JPG
>>4538274
I guess I need to invest in one then.
>>
>>4538277
I only realize now why large formats use those bellows.
>>
as the other guy said you need a tilt lens for architecture photography.
looks like large format, so it is a long focal length in 35mm but it's got a wide FOV in large format.
>>
File: figure-before-after.jpg (2.26 MB, 2400x1147)
2.26 MB JPG
>>4538276
That's the tilt part, you tilt the focal plane so more or less is in focus, with less giving that miniature effect
This is the shift part, which you can also essentially do in post with keystoning, at the cost of resolution
>>
>>4538286
Post keystoning also leaves in weird UWA distortions that wouldn't exist with a physical adjustment
>>
>>4538286
And by cost of resolution, I also mean field of view in practice
>>
>>4538287
Is there an article or example I could see of this?
>>
>>4538289
Just look at /p/ users who keystone in post lo
>>
>>4538292
>I do not have an example or source at all
You can just say that next time
>>
Aside from the change in focus, correcting the distortion in software is actually no different than using a tilt shift lens.
>>
>>4538304
Correcting for distortion in software is more like tilting the lens of an enlarger than doing so in-camera, because you're stretching parts of an already captured image and its imperfections with it.
>>
>>4538304
Correcting for distortions optically doesn't destroy the image in quite the same way as correcting for them digitally.
>>
>>4538310
What distortion are you talking about?
>>4538314
True, but good thing it's close enough for most cases to not make a difference
>>
Quite surprised that nobody has mentioned rectilinear lenses yet - which are specifically designed to prevent distortion and deliver straight lines...
>>
>>4538354
They still have perspective distortion (corners not straight)
>>
>>4538354
Pretty much all lenses aside from fisheyes are (aiming to be) rectilinear, it's the default projection in photography. It's only mentioned explicitly for ultrawides to tell them apart from fisheyes.
Rectilinear perspective still only makes parallel lines appear as such if the sensor plane is parallel to them too, hence lense shifting.
>>
>>4538286
jst get the lens you need and dont tak shitty photos in a hurry
>>
>>4538384
>hens lens shifting
Ftfy
>>
>>4538286
>https://exposure.software/blog/2019/perspective-correction-with-transform-tools/
The center is straight, but the edges are leaning outwards in this and the building looks extremely unnatural because straightening the lines did not actually correct perspective, it just straightened the lines while keeping everything visible that was with the original perspective

Instead of looking like a building constructed in a straight up in down fashion like it really is and appears to be in the original, it now appears to be a modern art project
>>
>>4538296
Literally here retard >>4538286

Straightening lines in post does not correct perspective
It never has
it never will
it is literally impossible to do without generative AI

You do actually need a perspective control lens to take this kind of photo

Editing can not fix composition, you need to place the camera in the correct spot to begin with (or all your photos look like iPhone)
Editing can not fix perspective, you need to have an image with the correct perspective projected onto the sensor
Editing can not fix aliasing, you need to use a lens that diffuses detail when it's an issue
Editing can not fix colors, you need to use a lens with good color rendition and a sensor that discriminates between hues and shades better
Editing can not fix sharpness, you need an actual sharp image to start with
-or all your photos look like iphone

Believing otherwise is what leads to believing digital photography is inherently bad looking, what makes all your photos look like iPhone
>>
>>4538411
Editing cant fix lighting either

Adding +7 magenta tint to a modern mirrorless shooting under cheap shit LEDs doesnt fix how light and color actually works. Masks and gradients cant add light sources and shadows that were never there. White balance cant actually change the color of a light source.

Post is fake and gay and only exists because cameras processors are too weak and their screens too inaccurate to interpret sensor data correctly, not to avoid getting it right in camera. The standard for high end digital photography is a hasselblad or phaseone MFDB shooting raw tethered to a laptop running phocus or capture one.
>>
>>4538411
>>Straightening lines in post does not correct perspective
>It never has
>it never will
>it is literally impossible to do without generative AI
Yeah but that has nothing to do with our discussion because "perspective control" lenses do not meaningfully change your perspective (i.e. the physical location of your camera in the scene). What they do change is the projection, and that can absolutely be accurately corrected for, just like a fisheye image can be accurately remapped to rectilinear. The geometry is 100% sound whether you're using editing software or a perspective-control enlarger.
What post-processing options can't emulate, however, is the tilt-shift lens's ability to keep the focus plane matched to your subject. Editing also inherently cause artifacts from the stretching it does (uneven softness, bokeh, noise/grain, etc.).
>>
Tilt-shift confuses me, but I do have an Olympus somewhere in my hoard I ought to fiddle with.
>>
>>4538411
>I have no examples or sources just more rambling
Sad
>>
>>4538410
To the extent this is true, the verticals in OP are also not uniformly straight either

Try to think more about what the shift is doing to the projected image, and you might level up your knowledge base
>>
>>4538419
>Post is fake and gay and only exists because cameras processors are too weak and their screens too inaccurate to interpret sensor data correctly, not to avoid getting it right in camera. The standard for high end digital photography is a hasselblad or phaseone MFDB shooting raw tethered to a laptop running phocus or capture one.
Anon, post exists before digital cameras. Digital post is as old as commercially available digital cameras, 1989.
Before Blackmagic Design, there was Cintel. And Cintel made the original Ursa, a telecine machine that kickstarted the digital intermediate craze. The first DSLR came in 1991.



[Advertise on 4chan]

Delete Post: [File Only] Style:
[Disable Mobile View / Use Desktop Site]

[Enable Mobile View / Use Mobile Site]

All trademarks and copyrights on this page are owned by their respective parties. Images uploaded are the responsibility of the Poster. Comments are owned by the Poster.