Enough of this perspective non sense..

Enough perspective non-sense - yet there were no non sense to begin
with, Daniella made all that up.
the title was intenede to be a bit cathchy and humoristic. I never said that perspective is non sense..but rather meant that for some people this article can clear up some non-sense or misunderstanding.

IN fact...people read what they really want out of it and take any excuse to be rude or do personal attack. period.
Well, I didn't read all the posts, so possibly some went over the
line, but when you make subject lines like that, you ask for it.

Kjeld Olesen
Perhaps it's just my "perspective", but..

How have we come to a point where people feel free to make ad
hominem attacks on posters here, as if this is a "humanity-free"
zone?

My God, people - take a step back and look at plain ugly cruelty of
what you are blithely typing!

Please, keep these forums a civil place - find another outlet for
your thwarted aggressions.
--
Gingerbaker
http://www.pbase.com/gingerbaker/galleries
--
Kjeld Olesen
http://www.acapixus.dk
--
Minë Corma hostië të ilyë ar mordossë nutië të
Mornórëo Nóressë yassë i Fuini caitar.
Un thoron arart’a s’un hith mal’kemen ioke.
Saurulmaiel
 
For those who wonder about the difference in wide angle and
telephoto lens.. for those who think that wide angle lens and
telephoto lens does not make a difference in depth.

any thoughts about this?

http://hobbymaker.narod.ru/English/Articles/perspective_eng.htm
I read the article, and I found it a little confusing, particularly
when he tries to mathematically justify the conclusions. For
example he says that correct similarity means a1/b1 =a2/b2 and that
correct scale means a1/a2 = b1/b2.
are they the same? from what I can see they are different.
From a mathematical point of view the two equations are identical
so I do not understand the difference between correct scale and
correct similarity. I do not understand all the statements but I
understand the effect on the example:
  • telephoto small depth
  • wide-angle high depth
  • 50 mm natural
I prefer to see things in this way:

I consider "natural" a photo when I am seeing it at a distance that
gives you the exact field of view of the combination lens/film-size
used, virtually any photo is "natural".
Same example:

If you print on A4 (297*240) the "natural" distance for different
focal length are:

50 mm -~ 48 cm
15 mm -~ 13 cm
400 mm -~ 3.4 m

The 50 mm is more natural because you naturally look at 50mm print
at the natural distance.

In any case I do not think that more "natural" is in some sense
"better". Telephoto, wide-angle, print size and viewing distance
are tools that can be used to obtain unnatural and beautiful
pictures.

Stefano
--
Minë Corma hostië të ilyë ar mordossë nutië të
Mornórëo Nóressë yassë i Fuini caitar.
Un thoron arart’a s’un hith mal’kemen ioke.
Saurulmaiel
 
So really, the only factor that governs perspective is your angle
of view. The smaller the angle, the more compressed the
perspective. Focal length has nothing to do with it.
it's the way both wide angle and telephoto feel.. Like I said, I am not considering taking off a crop off the wide angle shot to produce the telephoto shot. I understand that from the same distance and angle it does not change. I was simply refering to how wide angle look deep and how telephoto lens make a scene look flat. That's the only thing that it has to do with.

It really is
quite easy to test this too. Just perform the experiment I
described above. Take a picture of a scene with a 135mm lens, and
from the same distance (very important) take it again with a 35mm.
Crop the 35mm image to match the same scene as the 135mm lens image
and you will see that the perspective is identical. You might want
to down-rez the 135mm image to match the resolution of the cropped
35mm image to make it easier to do a side-by-side comparison.
I know from the same distance the perspective does not change..and I was not even refering to that. I also menionted that no crop..since it is not the way was use these lenses. We use them full frame. sure if I take a crop out of 5 pixel by 5 pixel from a wide angle..I recreate the same field of view from the same distance but that's abolutely not what I was talking about.
I hope this explanation has made you curious enough about the
validity of your previous thoughts on this issue to actually try
this experiment yourself. I think in the long run you'll be
thankful that you did.
I don't need to try it. I know it. but I was talking about something totaly different here.
-Yohan
For those who wonder about the difference in wide angle and
telephoto lens.. for those who think that wide angle lens and
telephoto lens does not make a difference in depth.

any thoughts about this?

http://hobbymaker.narod.ru/English/Articles/perspective_eng.htm

--
Minë Corma hostië të ilyë ar mordossë nutië të
Mornórëo Nóressë yassë i Fuini caitar.
Un thoron arart’a s’un hith mal’kemen ioke.
Saurulmaiel
--
Minë Corma hostië të ilyë ar mordossë nutië të
Mornórëo Nóressë yassë i Fuini caitar.
Un thoron arart’a s’un hith mal’kemen ioke.
Saurulmaiel
 
Ok... One sample... Shot with a wide angle or telephoto:

in order to tell with that scene is to have a reference. if you frame the scene in the same manner with a wide angle lens and a telephoto lens, they will feel different.

I posted this before but you probably missed it. In this exemple, it is easier to see the effect when a scene is framed the same way using diffirent focal length. first one at 22mm and second at 35mm, see how closer the forest look from the hay bale in the 35mm shot? but their respective distance never changed..it only appear to be closer or farther. The hay bales on the background also look bigger so closer to the hay bale in the foregroud, or smaller and farther to the hay bale in the foreground. The scenes are framed about the same way but in the 35mm shot you can already see this effect..if I would have taken it at 100mm, the forest would be much bigger..the hay bales in the backgroudn woudl have been probably of the same size as the hay bale in the forground..so they would all look very close to each other...but they were not.




--
KEG

All comments should be taken as shameless plugs for me and my
equipment ;)

--
Minë Corma hostië të ilyë ar mordossë nutië të
Mornórëo Nóressë yassë i Fuini caitar.
Un thoron arart’a s’un hith mal’kemen ioke.
Saurulmaiel
 
I read the article, and I found it a little confusing, particularly
when he tries to mathematically justify the conclusions. For
example he says that correct similarity means a1/b1 =a2/b2 and that
correct scale means a1/a2 = b1/b2.
are they the same? from what I can see they are different.
a1/b1=a2/b2
divide both sides by a2:
a1/(b1*a2)=1/b2
multiply both sides by b1:
a1/a2=b1/b2

The two equations are equivalent.

Lee Jay
 
So really, the only factor that governs perspective is your angle
of view. The smaller the angle, the more compressed the
perspective. Focal length has nothing to do with it.
it's the way both wide angle and telephoto feel.. Like I said, I am
not considering taking off a crop off the wide angle shot to
produce the telephoto shot. I understand that from the same
distance and angle it does not change. I was simply refering to
how wide angle look deep and how telephoto lens make a scene look
flat. That's the only thing that it has to do with.
But that's also exactly my point. There is no difference between how a 35mm makes a scene "feel" compared to a 135mm from the same distance and using identical angle of view. If you agree with that then you agree with the other posters who you are trying to debunk who are all saying the same thing.

But I think I know where you're going.

Let's take a portrait for example. Are you saying that a full-frame portrait taken with a 35mm lens will have different perspective than a full-frame portrait with a 135mm lens? If so, well then why are we arguing? Of course that's true, and nobody will debate that. The wider the lens the more depth; the longer the lens the flatter--there's no argument there. But that's a given, so why even bring it up? None of the other posters were arguing against that either, I'm almost certain.

It might be a matter of semantics here, but once again I will say that the difference in "feel" (perspective) has everything to do with angle of view. It is simply that the 35mm lens allows for a greater angle of view than the 135mm. So if you say that a full-frame capture of a subject with the 35mm lens will yield a different "feel" than one taken with a 135mm lens, well that's a given and nobody will dispute that. It still puzzles me why you even bring this up though, if that's the case. Could it just be miscommunication from both sides of the debate?

-Yohan
 
I read the article, and I found it a little confusing, particularly
when he tries to mathematically justify the conclusions. For
example he says that correct similarity means a1/b1 =a2/b2 and that
correct scale means a1/a2 = b1/b2.
are they the same? from what I can see they are different.
a1/b1=a2/b2
divide both sides by a2:
a1/(b1*a2)=1/b2
multiply both sides by b1:
a1/a2=b1/b2

The two equations are equivalent.
it's a retranscription..so maybe he made a mistake somewhere, not sure.
--
Minë Corma hostië të ilyë ar mordossë nutië të
Mornórëo Nóressë yassë i Fuini caitar.
Un thoron arart’a s’un hith mal’kemen ioke.
Saurulmaiel
 
But that's also exactly my point. There is no difference between
how a 35mm makes a scene "feel" compared to a 135mm from the same
distance and using identical angle of view. If you agree with that
then you agree with the other posters who you are trying to debunk
who are all saying the same thing.
from the same distance..but that is not what I was talking about either. I did not say from the same distance. In order to frame the things in the same matter, you do have to change your distance.
But I think I know where you're going.

Let's take a portrait for example. Are you saying that a
full-frame portrait taken with a 35mm lens will have different
perspective than a full-frame portrait with a 135mm lens?
for exemple of a portrait..why people don't use wide angle lens for portrait? simple because it distord facial feature...why? because they must get close to get the same framing..and doing so they affect the perspective. The nose will look larger than it really is and it is not pleasing. now you step back and use a telephoto and the nose look more in proportion. that's the way we use these lenses.

In my exemple of the hay bales..you can really see what I mean. does the 22mm photo represente what I saw with my eyes? nope..the forest was not that far away.

does the 35mm represent it? it is pretty close. woudl a 200mm shot with the same framing do it? nope..it woudl make the forest look way closer than it really was. that's all I am saying.

If so,
well then why are we arguing? Of course that's true, and nobody
will debate that. The wider the lens the more depth; the longer
the lens the flatter--there's no argument there. But that's a
given, so why even bring it up?
oh..I simly thought the article was interesting and that could be of interest to some people. if people are not interested in the article...they should just skip it.

None of the other posters were
arguing against that either, I'm almost certain.
no they were arguing about something else..somethign that I wasn't even arguing about.
It might be a matter of semantics here, but once again I will say
that the difference in "feel" (perspective) has everything to do
with angle of view. It is simply that the 35mm lens allows for a
greater angle of view than the 135mm.
it's the way we work with these lens that is different. It does not matter why they look deeper or flater, they do look different. Maybe when a person start to pay attention to composition and framing..they will realize that it make a big difference in the perception of depth. For exemple, the 22mm shot for me does not cut it...it does not look as what I was seing with my eyes for relative distance.

So if you say that a
full-frame capture of a subject with the 35mm lens will yield a
different "feel" than one taken with a 135mm lens, well that's a
given and nobody will dispute that. It still puzzles me why you
even bring this up though, if that's the case. Could it just be
miscommunication from both sides of the debate?
like I said..I thought the article was interesting and I wanted to know the thoughts others had about it. quite simple :)
--
Minë Corma hostië të ilyë ar mordossë nutië të
Mornórëo Nóressë yassë i Fuini caitar.
Un thoron arart’a s’un hith mal’kemen ioke.
Saurulmaiel
 
sounds like someone needs to post some examples 'cause I am confused as to what exactly it is we are all debating here in the first place.

--
pakety

 
... we're done. Thus concludes this edition of "DPReview Pointless Debates" :)

Back when I was still a complete photography newbie, I read some basic photography books and they described the flatness that you get from a telephoto lens compared to a wide angle. This is a universally accepted concept as old as exchangable lenses, and can be witnessed in every day photography.
But that's also exactly my point. There is no difference between
how a 35mm makes a scene "feel" compared to a 135mm from the same
distance and using identical angle of view. If you agree with that
then you agree with the other posters who you are trying to debunk
who are all saying the same thing.
from the same distance..but that is not what I was talking about
either. I did not say from the same distance. In order to frame
the things in the same matter, you do have to change your distance.
And there is the rub. People (including me) misunderstood the intent of your original post, and really if you had changed the title of the original post to something more applicable to the discussion this thread would've gone over much more smoothly.
But I think I know where you're going.

Let's take a portrait for example. Are you saying that a
full-frame portrait taken with a 35mm lens will have different
perspective than a full-frame portrait with a 135mm lens?
for exemple of a portrait..why people don't use wide angle lens for
portrait? simple because it distord facial feature...why? because
they must get close to get the same framing..and doing so they
affect the perspective. The nose will look larger than it really
is and it is not pleasing. now you step back and use a telephoto
and the nose look more in proportion. that's the way we use these
lenses.
No debate there.
If so,
well then why are we arguing? Of course that's true, and nobody
will debate that. The wider the lens the more depth; the longer
the lens the flatter--there's no argument there. But that's a
given, so why even bring it up?
oh..I simly thought the article was interesting and that could be
of interest to some people. if people are not interested in the
article...they should just skip it.
I was interested, but I found nothing new in there. Like I said, this concept has been around a long time, and even newbies learn about it if they look in the right places for how-to tips.
It might be a matter of semantics here, but once again I will say
that the difference in "feel" (perspective) has everything to do
with angle of view. It is simply that the 35mm lens allows for a
greater angle of view than the 135mm.
it's the way we work with these lens that is different. It does not
matter why they look deeper or flater, they do look different.
Maybe when a person start to pay attention to composition and
framing..they will realize that it make a big difference in the
perception of depth. For exemple, the 22mm shot for me does not
cut it...it does not look as what I was seing with my eyes for
relative distance.
I beg to differ that it doesn't matter why. Knowing the reasons for different optical/photographic behavior is key to truly understanding your craft.
So if you say that a
full-frame capture of a subject with the 35mm lens will yield a
different "feel" than one taken with a 135mm lens, well that's a
given and nobody will dispute that. It still puzzles me why you
even bring this up though, if that's the case. Could it just be
miscommunication from both sides of the debate?
like I said..I thought the article was interesting and I wanted to
know the thoughts others had about it. quite simple :)
Fair enough.

-Yohan
 
Enough perspective non-sense - yet there were no non sense to begin
with, Daniella made all that up.
the title was intenede to be a bit cathchy and humoristic. I never
said that perspective is non sense..but rather meant that for some
people this article can clear up some non-sense or misunderstanding.
Sorry, I confess to not having read the article as it failed to load when I first tried. I jumped to the conclusion that it would support the idea that perspective was a function of focal length rather than the distance to subject. Sorry if I jumped on the wrong wagon here - still haven't read the article ;-)

--
Kjeld Olesen
http://www.acapixus.dk
 
... we're done. Thus concludes this edition of "DPReview Pointless
Debates" :)

Back when I was still a complete photography newbie, I read some
basic photography books and they described the flatness that you
get from a telephoto lens compared to a wide angle. This is a
universally accepted concept as old as exchangable lenses, and can
be witnessed in every day photography.
sure..but each time I point this out here..it is always a mess. maybe it is my fault and I don't have the correct way of saying this..why the article is a better way. if it was not useful for you..then too bad..at least it was useful for some people and for that only it was worth it.
from the same distance..but that is not what I was talking about
either. I did not say from the same distance. In order to frame
the things in the same matter, you do have to change your distance.
And there is the rub. People (including me) misunderstood the
intent of your original post, and really if you had changed the
title of the original post to something more applicable to the
discussion this thread would've gone over much more smoothly.
yeah..problem like that happen when you try to find catchy title LOL :)
oh..I simly thought the article was interesting and that could be
of interest to some people. if people are not interested in the
article...they should just skip it.
I was interested, but I found nothing new in there.
yes you, but some people did find something new from it. I did not post this only for you you know :)
 
sounds like someone needs to post some examples 'cause I am
confused as to what exactly it is we are all debating here in the
first place.
hmm did you read the article? what exactly do you find confusing in it?

there are exemples posted in their thread already..and there are exemple well explained in the article as well.
--
Minë Corma hostië të ilyë ar mordossë nutië të
Mornórëo Nóressë yassë i Fuini caitar.
Un thoron arart’a s’un hith mal’kemen ioke.
Saurulmaiel
 
rather than the distance to subject. Sorry if I jumped on the wrong
wagon here - still haven't read the article ;-)
somehow I suspect that you are not alone..and many people have responded in this thread without even reading the article :)
--
Minë Corma hostië të ilyë ar mordossë nutië të
Mornórëo Nóressë yassë i Fuini caitar.
Un thoron arart’a s’un hith mal’kemen ioke.
Saurulmaiel
 
You apparently agree that focal length has nothing to do with perspective, but that distance to the object does. Just about any other question you have answered with "haven't you read the article?" So just what is it you mean the article proves?

Is it that if you keep the framing constant but move away from the target (i.e. using a telephoto lens) the feel of the picture will be compressed, or "flatter". Conversely if you move closer with the same framing (using a wide angle lens) the feel will be more open, or "deeper". That's really old hat but granted, useful to know for the budding photographer. If this is the whole conclusion of the article why not just say so, so this thread of misunderstandings can come to rest finally.

Just trying to understand what all the fuzz is about. :-)
 
hmm did you read the article? what exactly do you find confusing
in it?

there are exemples posted in their thread already..and there are
exemple well explained in the article as well.
Hi Daniella...just seemed like you and Yohan weren't on the same page so some examples would have helped to clarify.

--
pakety

 
I haven't read the article, because it's long and probably just says the same old stuff that we've all heard. Some people say that lenses don't have perspective and some people say that they do. Both are right depending on how the photograph is viewed.

For one thing, perspective is a matter of the cameras position. Wider lenses take in more of the scene, while longer lenses crop the scene down to a small area. If both photos (wide and tele) were shot from the same perspective then the telephoto shot will match up with the center of the wide shot.

All lenses could be considered to have the same perspective if they were printed inversely proportionally to their focal length. In other words, the wider the shot, the bigger the print. When viewed from the same distance, photos taken with wide lenses and telephoto lenses would have the same perspective.

However, since pictures seem to be printed all the same size, for showing friends or displaying in magazine articles, they do have perspective. Print a ultra wide angle shot at 4x6 and print a telephotoshot at 4x6. You'll see that the first photo has a wide perspective and the second has a narrow perspective.

So, in order for an ultra wide angle shot to give you a "normal" perspective, it would have to be printed large and viewed close up... and a portrait taken with a long lens looks good in wallet size or an 8x10 across the room on the wall.

I don't think that it has to be an exact science, but just something you should be aware of.

Perspective is just another way to add a sense of realism (or the opposite) to a photo and I'm not even sure how big of an effect is has on people.
For those who wonder about the difference in wide angle and
telephoto lens.. for those who think that wide angle lens and
telephoto lens does not make a difference in depth.

any thoughts about this?

http://hobbymaker.narod.ru/English/Articles/perspective_eng.htm

--
Minë Corma hostië të ilyë ar mordossë nutië të
Mornórëo Nóressë yassë i Fuini caitar.
Un thoron arart’a s’un hith mal’kemen ioke.
Saurulmaiel
--
Tony

blog: http://www.tonyhall.name
 
Christian,

I've not yet completed reading your enite site but I intend to.

Your work is fanatstic to say the least.

I find the merging of your original technique with this new robotic tool intriguing. I look forward to reading more of your site and plan on forwarding a link to good friend who I know will be very interested in your work.

Cheers!

Chris

--
Galleries: http://www.pbase.com/cbgallery
 
The Pointillist painter complained,
I do dots, until totally drained.
By technology he was saved,
And he constantly raved,
Now only my imagination is strained!

Curious....is this quote by you or Dr. John Randall?

--
Galleries: http://www.pbase.com/cbgallery
 
You apparently agree that focal length has nothing to do with
perspective, but that distance to the object does. Just about any
other question you have answered with "haven't you read the
article?" So just what is it you mean the article proves?
Is it that if you keep the framing constant but move away from the
target (i.e. using a telephoto lens) the feel of the picture will
be compressed, or "flatter".
yes and that objects will seems closer to each other than they actualy are. inverse goes for wide angle lenses.

Conversely if you move closer with the
same framing (using a wide angle lens) the feel will be more open,
or "deeper". That's really old hat but granted, useful to know for
the budding photographer. If this is the whole conclusion of the
article why not just say so, so this thread of misunderstandings
can come to rest finally.
it the article create misunderstanding..not my fault. I thought it was quite clear what it meant.
Just trying to understand what all the fuzz is about. :-)
no fuz, just thought the article help understanding it all.
--
Minë Corma hostië të ilyë ar mordossë nutië të
Mornórëo Nóressë yassë i Fuini caitar.
Un thoron arart’a s’un hith mal’kemen ioke.
Saurulmaiel
 

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