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Posted by freediver 5 days ago

The value of bringing a telephoto lens(avidandrew.com)
117 points | 116 commentspage 3
busyant 1 day ago|
The author does make a compelling argument for using a telephoto to compress planes--the shot of the people on the bench with the mountains in the back gives a good example (even though the bench and rock-wall are tilted :-( ).
fennecbutt 1 day ago||
The Sony 24-240 is such a versatile zoom lens. It's pretty compact for what it is, maybe just a touch heavy but it can do everything (with reasonable light).
lvl155 1 day ago||
We are pretty close to replicating compression in AI. At the end of the day, you’re better off capturing more info/detail and post-process. You also have to think about re-processing images down the road when tech improves.
foxglacier 1 day ago||
Is there some line photographers are crossing by taking two photos of separate scenes and joining them together in software to create a picture like the people sitting on the log in front of the mountains? I think that would be called photoshopped and fake, but here they're describing manually selecting the background and adjusting its contrast so it ends up looking like it couldn't look in real life. Is that qualitatively better for something?

I guess I'm wondering what's the goal of making these kinds of picture? If it's just to produce the output, why not combine separate photos so you can get the mountains you want and the rocks and people you want without having to find them co-occurring naturally? If it's to follow some kind of rules for not cheating, why not do no hand-editing in software?

ImPleadThe5th 1 day ago||
Some people might think so. In an art class a professor once told us that all photography can be a lie whether edited or not. Consider:

Let's say I took a picture of a old man beating a child with a cane.

In the video version of the photo I zoom out, and it's clearly a stage performance.

Or I take a picture of a man frowning in front of a demolished home.

In the video version the man happened to be walking by a construction of a new home and I said something to get his attention and snapped the photo on moody black and white film.

Framing is curating reality and you can evoke certain emotions or messages simply by what you choose to keep in and leave out of your frame.

stuxnet79 1 day ago|||
> Is there some line photographers are crossing by taking two photos of separate scenes and joining them together in software to create a picture like the people sitting on the log in front of the mountains?

This has been a concern people have had for years. You might benefit from reading Susan Sontag's essay On Photography - https://writing.upenn.edu/library/Sontag-Susan-Photography.p...

My take, as soon as you pick up a camera to capture a scene you are telling a story and incorporating your own bias. For this reason, once I learned how cameras worked and dabbled in photography as an amateur it really transformed how I consume media. You could have the same subject and scene but tell a completely different story depending on the decisions you make as a photographer.

gausswho 23 hours ago||
I was highly disappointed with Sontag's piece because it felt dismissive of the joy and craft of painting with light. As the tools available for faking it have become ubiquitous, and the bias more up front and center, I've come to find her conclusions overly reductive. My favorite photography is earnest, which she considers inconsequential.
igouy 22 hours ago|||
> joining them together in software

What if they were joined together by exposing 2 different overlapping film negatives?

You may enjoy "Faking it: Manipulated Photography Before Photoshop"

https://www.google.com/books/edition/Faking_it/nGvTg_HC32YC?...

> get the mountains you want and the rocks and people you want

Digital painting? Too difficult, maybe just use Firefly "Adobe's online AI image generator" ;-)

kqr 1 day ago||
> ends up looking like it couldn't look in real life.

Eyes are subjective. The goal of manual post processing is often to make an image that replicates what the photographer saw, which is rarely possible with the automatic processing the camera does.

(Image data is always processed. No human can see raw photon counts.)

foxglacier 1 day ago||
You mean people's brains selectively enhance the contrast of the mountains so he's trying to reproduce that perception?

In these cases, it's clearly not to replicate what the photographer saw with his unaided eyes because he wouldn't have been able to see such detail so far away. Is it to replicate what he saw through the viewfinder?

A lot of photographers here. Do you guys impose some kind of personal restrictions on what types of processing or instruments you use to make it "honest" or not-cheating? How does that work?

kqr 1 day ago|||
Yes, people's brains selectively modify contrast, saturation, detail, framing, and just about every parameter there is.

When it comes to visual experiences, it is meaningless to talk about "honesty" because they are so subjective. That's one of the greatest joys of looking at other photographers' interpretations of familiar subjects: they see things so differently.

Restrictions on processing make sense, but they are not easy rules, because they depend on the purpose of the image. I suspect the most restricted are people in news -- they operate on similar principles as those who write the articles. In other words, there are no forbidden technical procedures, but the end product must effectively convey a real-world event (from some perspective -- news is always biased.)

igouy 22 hours ago||
> it is meaningless to talk about "honesty" because they are so subjective.

One can still choose to deliberately misrepresent something that is subjective.

igouy 5 hours ago|||
> Is it to replicate what he saw through the viewfinder?

The experience is bigger than "saw".

Is it to hint at what they felt?

Later, looking at a purely-2d-visual representation is a different kind of experience than being there.

simondotau 1 day ago||
My main rule of thumb for landscape photography: the wider your angle of view, the more unoriginal your photo will probably be. Telephoto is where the photographer demonstrates their ability to reveal truly original compositions.
igouy 1 day ago|
Yes, telephoto, tripod technique, stitch, crop, and trust that shows whatever you originally "saw".
cratermoon 1 day ago||
The visual effect of the sweeping panorama our eyes see doesn't translate to a wide-angle image. When we view a scene such as the one in the first image, we aren't looking at it all at once. Instead, our attention moves from one area of interest to another, generating in our minds an idealized representation free of the inconsequential distractions like wires, ugly signs, and utility poles. The camera records everything, and reduced to the smaller, self-contained artifact of the print or image on the screen, these distractions become picture elements.

Contrary to many beginning photographers' instincts, a short to medium telephoto lens best allows the photographer to capture the point or points of interest and keep the distractions out of the frame.

PaulHoule 1 day ago||
An odd discovery I made using this lens

https://www.venuslens.net/product/laowa-9mm-f-5-6-ff-rl/

is that the wide angle can make distracting things like power lines look really small in context and not so bothersome the way they are with moderate focal length lenses. Also I think very wide lenses can capture some of that panorama effect: I live near a state forest that I think is strikingly beautiful but most lenses can only capture a tiny bit of it, yeah you can get a flower or a bug or something, but be it a 20mm or a 200mm any attempt to go beyond macro photography falls flat.

Scene_Cast2 1 day ago||
Oh that 9mm is my absolute favorite lens (a close second being a 105mm). It's surprisingly versatile, too - I've done street photography, architecture (probably where it excels the most), landscape, and even macro.
PaulHoule 1 day ago||
I had a phase when I only had a 35mm-equivalent prime and was happy for a long time, I have a lot of lenses now but I can imagine having just that 9 and not getting bored for a long time though I wouldn't be doing sports -- if you can find flower beds that are exceptionally deep it even takes good flower photos but the only beds I can find that deep are the ones my wife maintains, if I got to Ithaca or Cornell flower beds just aren't deep enough that I can hold the lens over them and have flowers all the way to the edge.
foxglacier 1 day ago||
Related to my other comment on here, but why not use AI editing tools to cut out the signs and poles, instead of buying a special lens? It would have the same effect of replicating how it felt to look at in real life.
ttoinou 1 day ago|

    The compression effect a telephoto has can be used even more dramatically to tie together different planes in a scene

This somehow is a common misconception from non-engineers. I read and believed that when I was 14 years old, at some point I tested on photoshop to overlay pictures taken at different zooms factors and found that telephoto DO NOT compress scenes.

Its the fact that you are far away from the subject that compresses distances.

Once you have decided on the constraint to use a telephoto (to compress distances), you then move yourself away (as the article said) from the scene to be shot so that it fits the zoom factor. The relatives distances are what makes the compression, not the glass inside the lens. You could also take a wide picture and make a digital crop.

famerica 1 day ago||
I interpreted "compression effect" to mean exactly what you're saying it does. I'm not familiar with what you're saying it does not do. I have never heard of that misconception.
dboreham 1 day ago||
Parent directly quoted the relevant text:

> effect a telephoto has

They're saying that it is not a property of the lens, but rather of the perspective of the scene viewed from a distance. You'd get the same effect using any focal length lens, taking the shot from the same location, and cropping appropriately.

Perhaps in contrast to depth of field which is a property of the lens.

stirfish 1 day ago||
https://www.tamron.com/global/consumer/sp/impression/detail/...

I'm looking at the portraits of the woman on the beach and I'm not understanding how to get from one to the other with cropping. What am I missing?

ponooqjoqo 1 day ago|||
The photographer had to move quite a bit further back to get the subject to be the same size in the frame at 150mm as the subject was at 35mm.

They could have used the 35mm lens at the same distance as the 150mm lens and simply cropped and the perspective compression would be the same (it'd just be a lower resolution image).

actionfromafar 1 day ago|||
You have to take several steps back, then take the picture and crop.

Of course, on many cameras you then would get a smudgy or pixelated mess.

dmbche 1 day ago|||
Not only is a digital crop an absolute loss in resolution, different focal lengths produce different image quality, from the different perceived thickness of the zone of focus at equivalent stop and the stength of the blurring outside the zone of focus.

Edit0: Obviously you're also see the thing you're trying to get a picture of better

ttoinou 1 day ago||
Of course ! This can be explained if we have more time. But the basic explanation should never lead us to believe compression is the property of a lens
crazygringo 1 day ago|||
I think you're misunderstanding, and have come up with a strawman here.

What you're describing as correct is what people understand. Of course it's the fact that you're far away. I think it goes without saying that you can't use a telephoto lens inside of a room or something.

And yes, of course you could take a wide picture and make a crop. But the resolution would be terrible. The whole point of a telephoto lens is to take that tiny crop of your environment at full resolution.

I'm sorry you learned it wrong at age 14 and maybe wherever you got it from really did explain it badly. But it's standard for professionals to talk about the effect of a long lens in this way, that the camera will be further away.

ttoinou 1 day ago|||
Of course. I wish it was better explained. No, not everyone interprets the words to get the correct view. The words used are awful and some photographers are responsible of this.
ponooqjoqo 1 day ago|||
I don't think it's a strawman. I've definitely seen a lot of people think that the perspective compression is a result of lens choice rather than camera position.
Kon5ole 1 day ago|||
A similar misconception is that bigger sensors give shallower DOF than smaller sensors, which is also an effect of your position relative to the subject rather than the sensor itself.
ttoinou 23 hours ago||
Interesting !
nothrabannosir 1 day ago|||
It took me a while to really believe that in a perfect, "spherical cow" kind of way, zoom = crop. Which is how digital zoom works.

Of course analog zoom > crop, but only because reality < theory.

ttoinou 1 day ago||
You can easily correct lens distortion with Adobe Camera Raw, then what’s left (the difference) is almost just chromatic aberration and resolution
foxglacier 1 day ago||
Taking it a step further, compression is not a function of distance either. It's how parallel the rays are. You could also get compression up close by capturing the light field with some sort of spatially distributed camera (pushbroom camera?).
ttoinou 23 hours ago||
But if you had an algorithm that would change directions of rays, you would have a resulting image with implicitly a different position of the camera (closer or further away), no ? Unless you do some kind of psychedelic deformation.

Anyway, I'd say you're technically correct but you might miss some angles and have some holes in the resulting images. But now with gaussian splats and AI we could reconstruct holes easily

foxglacier 22 hours ago||
In practice, you might struggle to do it well, but in principle, it could be a gigantic image sensor with no lens but a collimator on each pixel. You can angle the collimators to collect rays that would otherwise end up at the far-away camera.

Also, satellites photographing the Earth do it by moving the camera, and they can produce compression effects beyond what you'd get just because of their distance.

ttoinou 19 hours ago||
For satellite you’re talking about taking the same surface on earth from different angles as the satellite orbits ?