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Archive 2009 · what is '3d' ?

  
 
Anden
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p.32 #1 · what is '3d' ?






Feb 28, 2010 at 01:35 PM
Cableaddict
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p.32 #2 · what is '3d' ?


PAWolff wrote:
....For comparison purposes I have another photo of the same flower taken a half hour later with a Zuiko 35-70mm f/4 lens at 70mm. This lens gives me very sharp pictures. To my eyes the flower in this photo is at least as sharp as the one above, but it looks relatively flat.


PAWolff, I couldn't agree more.

Those are excellent example pics of the difference.

-although I still think such tests should be done at f/11.



Feb 28, 2010 at 02:10 PM
Lotusm50
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p.32 #3 · what is '3d' ?


Hey, the roast looks a little dry, but the veggies at the top look good enough to eat. :-)




Mar 01, 2010 at 01:02 PM
Z250SA
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p.32 #4 · what is '3d' ?


Sean, as in my effort here earlier, you might have depth of field, but perhaps not the 3D as defined here around.

However, you got and deserved The Gold Medal!!! Congrats! What a thriller at the end.



Mar 01, 2010 at 04:03 PM
Sean Mills
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p.32 #5 · what is '3d' ?


Z250SA wrote:
However, you got and deserved The Gold Medal!!! Congrats! What a thriller at the end.


Unfortunately no, we didn't, they did, I'm American,
The after party would have been a lot more fun for me if I were Canadian. Quite the spectacle.


I find the first shot of the guy with the flag full of 3D, the veins on his left hand jump off the screen for me... also the gal with the flag on her shoulders... it's not just the shallow DOF, the creases in the flag, and her beanie really pop for me... but this thread is, while informative and entertaining, a bit ridiculous in that 3D is a completely subjective quality and cannot be defined in agreeable terms.




Mar 01, 2010 at 04:07 PM
RustyBug
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p.32 #6 · what is '3d' ?


Anden ... I'm diggin' the veggies too. Nicely done.


Mar 01, 2010 at 06:07 PM
michael49
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p.32 #7 · what is '3d' ?


Of all of my lenses the Sigma 50 1.4 seems to give me the most "3d" looking images.


f/2 on 5d2....
http://brownphotography.smugmug.com/photos/800391258_cCPCY-XL.jpg



Mar 01, 2010 at 08:41 PM
Alf Beharie
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p.32 #8 · what is '3d' ?


Cableaddict wrote:
WOW!

IMO, that's as good as it gets, IMO. What lens is that? (I'm guessing the Planar 100/2)


Looks flat as a pancake to me.



Mar 02, 2010 at 04:02 AM
Alf Beharie
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p.32 #9 · what is '3d' ?


kakomu wrote:
Is this 3D?
http://upload.wikimedia.org/wikipedia/commons/8/8a/Suffrage_parade-New_York_City-May_6_1912.jpg

from: http://en.wikipedia.org/wiki/Timeline_of_women%27s_suffrage


!...I'm getting fed up of seeing loads and loads of 2D shots with absolutely no 3Dness in this thread too.
I posted a pic with what I consider lots of 3Dness and yet I got lots of replies saying there was none in the said image.
So all this thread has proved, if it has proved anything, is that one mans visual definition of what can be construed as 3D in an image is another mans totally flat 2D image. Perhaps we should just leave it there and allow this thread to die a natural death as it does'nt seem to have any useful purpose now.



Mar 02, 2010 at 04:16 AM
Z250SA
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p.32 #10 · what is '3d' ?


Alf Beharie wrote:
Perhaps we should just leave it there and allow this thread to die a natural death as it does'nt seem to have any useful purpose now.


Or use it to post our best efforts, get constructive comments, and maybe even learn a thing or two in the process!



Mar 02, 2010 at 09:01 AM
RustyBug
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p.32 #11 · what is '3d' ?


Alf ... I enjoy seeing the pics with more 3D in them as much as anyone, but I think that in as much as I (& others) have had a learning curve in what constitutes good 3D (subjective variability already noted) ... we should afford a certain degree of lattitude for genuine efforts to promote the same learning curve for others.

There has been a tremendous amount of effort from the global FM community to contribute to this thread. Some have been target toward gear, some toward processing, some toward human vision, some toward composition, some toward (I shudder to say, definition).

The fact that this is not an easily aggreeable concept for some of the brightest (referring to others) & most experienced (others) photographers around the world ... should make it understandable that many people still have difficulty getting their heads (& eyes) around this. A couple of the easiest things for many to think constitutes 3D are the issues of DOF/Selective Focus/Background & Subject Separation.

As you well know, these things in & of themselves do not guarantee 3D-ishness ... no more than using lens 'X' guarantees achieving it. But for many, these things are what they readily recognize in a 3D-ish shot ... and therefore, they try to emulate them, with what they currently know.

I'm remembering some of Thrice, Cogitech & Braniac's dialogues regarding planes of focus on the matter ... to me that is a critical piece of the puzzle that is a nuance that initially could be overlooked as assumed as simply a DOF issue by many. So for many to submit a shot with DOF & background separation ... thinking they've got a 3D-ish shot ... well that seems only natural ... until it is further explained.

For those who have been in this thread the whole way ... it might be tough for us to imagine that someone coming to it later couldn't actually digest the voluminous information in it. Toss in a mix of some really tangential dialogue, and it is easy for me to undestand why others can remain 'confused'. As such, I will continue to try & be patient and explain to others ... similar as other FM'ers have been with me.

As noted, I can be & am somewhat passionate about the subject matter. Not only in this forum, but in my dialogues with Art Professors as well. There is a degree of human perception that is involved. So, in a similar vein to any other 'optical illusion' ... some people CAN see it, while other people CAN'T see it ... yet continue to give it their best shot. No reason to get upset with them.

In fact, there are days that I 'see it' strongly in a pic ... and there are days when I don't 'see it' as strongly in the same pic ... hence, the viewer is a piece of the puzzle that really can't be overlooked (nor controlled). Additionally, two different monitors can produce different results as well. When I don't "see it" in my LCD ... I use my CRT (which is the only one I truly use to evaluate with). So it should be taken with a grain of salt, when others either aren't producing it, or aren't seeing it.

My continued efforts to understand this are a bit offline in my dialogues with art & science educators. I must admit, that I too, at times, grow weary of some repetition. However, as many times as I have seen Cogitech, Braniac, Thrice & many others repeat themselves in this Forum (this thread & others) to the benefit of the constant influx of different members ... I've realized that those who are truly impassioned, understand the duty of persistence toward growth of those trying to learn ... and many FM'ers have proven to me their unwillingness to falter in this regard. There is a LOT that I don't know about photography, but I intend to uphold as much as I can. So for me ... abandonment & "natural death" are not something that I desire to align myself to.

Unfortunately, many of those who have been very strong contributors of this issue in the past, have chosen to be less involved in this thread (for very understandable reasons). If they should happen to be reading, I would greatly appreciate their return to contribution to help revitalize this thread.

Thanks,

Kent

Edited on Mar 02, 2010 at 10:22 AM · View previous versions



Mar 02, 2010 at 09:44 AM
RustyBug
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p.32 #12 · what is '3d' ?


Rick & Alf ... can you guys 'see it' in these pics?

Borrowed from PSquared63 (with permission):
http://psquared.smugmug.com/photos/394478238_CpvBH-XL.jpg
http://psquared.smugmug.com/photos/394478539_R8Fee-XL.jpg

if not ...



Edited on Mar 02, 2010 at 10:32 AM · View previous versions



Mar 02, 2010 at 09:55 AM
kakomu
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p.32 #13 · what is '3d' ?


Alf Beharie wrote:
Perhaps we should just leave it there and allow this thread to die a natural death as it does'nt seem to have any useful purpose now.


Z250SA wrote:
Or use it to post our best efforts, get constructive comments, and maybe even learn a thing or two in the process!


Isn't that what the photo forums are for?



Mar 02, 2010 at 10:02 AM
RickPerry
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p.32 #14 · what is '3d' ?


Kakomu,

Yes - I see really good photographs - with both perspective and depth of field control which give the perception of depth to the pictures. We are here to learn from each other - thank you. I would love to know the thought process involved when taking such photographs - that is how I learn.


However - IMHO

My problem is with this never ending discussion as to what does and what does not qualify as "3D". With low resolution downloads and various screen resolution/color renditions - I feel that it is hard to really get any consensus from this group. We have 27 pages of commments and photographs with no real definitions established. The undelying problem, I believe, is, that it is futile to attempt to define visual perception with a word based lanquage.



Mar 02, 2010 at 11:40 AM
kakomu
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p.32 #15 · what is '3d' ?


RickPerry wrote:
The undelying problem, I believe, is, that it is futile to attempt to define visual perception with a word based lanquage.


The underlying problem is ascribing a 3D description to an, ultimately, 2D medium.



Mar 02, 2010 at 03:24 PM
RickPerry
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p.32 #16 · what is '3d' ?




I CONCUR.

Meanwhile - It occurred to me that all 3d photographs are not necessarily great - and that - all great photographs are not necessarily 3D. 3D is a possible contributor to "Greatness".

What we are really talking about is - What makes a photograph good.

The above picture with fork leads the eye to the food - that is a good thing. In general, if the photographer can lead the viewer's eye around the space then he has made it interesting. 3D usually does lead the eye from one place to another - however there are many things that go into making a good photograph - 3D is only one of them. Excuse me for the rant - my passion is to discover what makes "ART" in photography. I welcome all comments. Thanks



Mar 02, 2010 at 03:57 PM
theSuede
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p.32 #17 · what is '3d' ?


Rusty, as I have been abscent for quite a few pages of discussion - apologies if this is a repeat.

It might be interesting to note that both I, and others I have discussed this with find that the personal psychological framing of a picture does wonders to the 3D effect. Example: You really FEEL something for things placed on a certain plane in the picture, and you therefore FEEL that other things in front of and behind this object/plane of interest really ARE in front of/behind that point of interest. Regardless of DoF aspects.

* If you were really hungry, then the meat a couple of posts above would be really 3D. You FEEL the need to focus on the meat, and you SENSE the glass of beverage in the background. IN THE BACKGROUND...! I.e - behind.

* If you recently had a 3lbs steak and four lagers (you're really STUFFED!), then the picture would loose a lot of the psychological focus, and a lot of the 3D effect would disappear. It's a nice, sharp, shot DoF picture of food, but not really that 3D.
-Therefore, I propose that how you feel about the picture as you're looking at it can have a great impact on how "3D" you find it. You have to look at the picture "in the right frame of mind" to get the depth sensation (and it is a "sensation", not a physiological/psychological understanding of true "depth")

Then of course there are a lot of technical aspects to it that helps, like having the defocus effect gradual "in a certain way", and the bokeh "believable", contrast levels at all frequecies slightly higher in the plane of interest than in volumetrics out of interest and so on...

One thing that also seems to help is to have SOMETHING in the plane of focus not to far from any point in the picture - to draw you back into the "plane of emotional focus". Having large areas where there's nothing at all to mentally focus on really has the opposite effect - you loose yourself, you have no emotional focus. The picture area is "void".

-So both samples above really works for me.



Mar 02, 2010 at 04:10 PM
RustyBug
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p.32 #18 · what is '3d' ?



The underlying problem is ascribing a 3D description to an, ultimately, 2D medium.


Which has repeatedly been defined & ascribed as an "illusion" of 3D in a 2D medium. Whether as a presenter or observer, it will always remain as a perception / illusion, hence the dependency on the interface with the observer (and the observing medium, i.e. monitor, print, etc.)

The term 3D is not a problem, as it is thoroughly established throughout history in 2D mediums as indicating the "illusion" of 3D.

Even the most basic art class teaches 3D rendering in 2D mediums (i.e. not limited to photography) ... and acknowledges it as an "illusion" ... the term has been established for centuries in this context, so I don't understand why people want to expend energy debating the definition of a term that has been defined long before any of us were even a thought in someone else's mind ... rather than discussing how to more effectively achieve the illusion within the photographic medium.



Mar 02, 2010 at 04:11 PM
RustyBug
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p.32 #19 · what is '3d' ?


Rick ... your point that 3D does not necessarily make a good or great pic is absolutely correct. So is your point that many good / great pics do not exhibit any 3D ... again, absolutely correct. But this particular thread is not about good or great pics ... it is about 3D.

This would be no different than having a Selective Focus thread or a foreshortening thread and saying that Selective Focus or foreshortening does not necessarily make a good pic ... the point is correct, but is misaligned with the thread.

The Suede ... I absolutely agree that the emotive aspect of the viewer comes in to play. Additionally, I believe that the individual viewer's pre-programmed perspective of scale for an object / scene comes in to play as well. There have been several instances where I have seen a pic that did NOT look 3D-ish, but then when cropped to a certain amount ... it came alive. Then when cropped even further, it went away. Viewing distance can be a factor as well. The number of attributes involved here are many, and I find them to be quite worthwhile for noting & discussing.

There is not a SINGLE component that makes a pic 3D-ish ... it is much more involved than that.

Glad you liked the pics ... just wish I had taken them.

Edited on Mar 02, 2010 at 05:02 PM · View previous versions



Mar 02, 2010 at 04:23 PM
RickPerry
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p.32 #20 · what is '3d' ?


Rusty,

Point well taken.



Mar 02, 2010 at 04:55 PM
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