Nov 25, 2009

RTM ~ Stupid!!!


Mapsource, Ship_Rock

I had a math teacher long ago who said, “RTP (Read the Problem)!” He was referring to nerves; some of us blew up on tests. In particular, he would knock 10 points off if you misspelled YOUR name…
Well, I got by that one.
Then I wanted to become a geologist. Maps are big for geologists; they told me where I was in the wilds before GPS. So, I learned to read maps.
Thought I was by that one as well…

This week I got a letter from New Mexico Magazine. An award certificate said I Won the Landscape Category for their 9th Annual Photo Contest. Huzzah!
As I gazed in admiration at the certificate, I noticed a small blip – they spelled the title of my winning image Ship Rock. I thought, “Idiota…!” I submitted Shiprock for that marvelous image’s name…

This map is an inset from Mapsource of the western US. It’s based on US Geological Survey place names. I pulled up northern New Mexico and asked it who was the idiot; me or NM Mag?
Clearly, the map said, “RTM (Read the Map) ~ Stupid!!!”

Well, I’ve corrected hundreds of spelling errors on the laptop. Here’s one more - a public confession…

Ship_Rock, 3AEB, HDR, Winner, Landscapes, New Mexico Magazine, 9th Annual Photo Contest


And just to drive the old stake through my old heart…

BAH, Humbug!

Nov 14, 2009

How WE See!

Take a Good Look!
I read a provocative article at dpBestflow. In a subsection dealing with HDR, dpBestflow touched on how our eyes see in one of the simplest explanations I've found. Immediately, something clicked; I understood why I like subtle tone mapping instead of some slightly more garish responses created by Photomatix.
In simple terms, nonlinear local adaptation will 'smooth' colors you see. As an example, compare your working 60 W bulb with Magic Hour sunset out the window. Everyone's brain is uniquely filtering what they see to their visual appreciation mode - inside and outside light turns out to be white. WOW!!!
Here's a pictorial definition:
On the left, Photomatix’ Detail Enhancer (Pde) pushed beyond limits my psyche can endure. On the right, added range of light and color from a ‘typical’ 5EV HDR (5EV).


Photomatix, Detail Enhancer, 5AEB, HDR

For my brain, added color Tone Compressed (default) HDR appeals more. When carefully tone mapped in Lightroom and Photoshop - each picture is rich, textured, and lustrous.
But, my brain balks when it sees images where Detail Enhancer, following someone else's visual appreciation, takes me from 'real world' to 'off-world sci-fi'!

How Do Judges React During Competitions?
I’ve spent 4 years watching judges evaluate digital images in competition. The majority will opt for careful tone mapping – voting their opinion through high scores and ribbons. Conversely, lower scores and no ribbons typify more brassy HDR tone mapping conditions.

Here are key vision points from dpBestflow on vision...

Adaptation
In human vision, adaptation is our ability to adjust to dramatically different lighting conditions. Our brains can adjust so we are able to see clearly on the brightest summer day and in a candlelit room. It’s a much more complicated, unconscious, and organic version of ISO.

Local Adaptation
Local adaptation is our ability to adjust different areas of our field of vision to accommodate different levels of brightness, different color temperatures, color casts, etc,. Think of sitting at your desk and looking out a window at Magic Hour. You probably have a 60w incandescent (orange) light bulb over your desk. Late-evening daylight out the window is much brighter and much, much bluer. You aren’t aware of it, but there might be as many as 12 EVs difference between light at your keyboard and light outside, both of which your brain perceives as white light.

Nonlinear Response
Nonlinear response is our ability to accommodate drastic changes in sensory input without overloading our brains. In terms of light, this means - if you double brightness, it doesn’t double your perception. Bright highlights or light sources might be 5,000-10,000 times brighter than their surroundings, but our excellent brains compress that to fit within our ability to perceive.

dpBestflow
dpBestflow is a joint venture between Library of Congress and American Society of Media Photographers. Their byline is "dpBestflow is the new guide for every aspect of digital imaging technology from ASMP, the leader in education for the professional photographer."
You might want to take a look at what they have to offer...
Enjoy...

Nov 9, 2009

Mind Your Histogram…


Bad Histograms
Hard Work Blunted…
Recent review of many Google and Bing images created a technical quandary. When I found a Magic Hour landscape image I sort of liked, it often had 'unbalanced' histograms with 'blown out' shadows or highlights – or both.
How do you know?
If the histogram touches or runs up either vertical axis, you’ve blown your histogram and may loose valuable data.
The shooter might take several shots of the same composition; thoughtfully evaluating each histogram. Several shots are a heuristic way of assuring captured data fit within the histogram - creating a well-balanced image.
We won’t touch on Expose to the Right – use Goolge to find valuable tutorials to enhance your digital growth.

Magic Hour is that time around dawn and dusk when light is soft and lustrous...
Now, if you consider I like deep wilderness shots, the shooter really took some extraordinary pains to get to that hard-to-find place where a particular image was captured. Yet, finding a balanced histogram from my image search was an exception - rather than the rule. So, why not apply the right technical steps in camera to assure a 'well-balanced image'?

Histogram Fundamentals
Back in the digital studio…
When histograms violate black and white points, the shooter doesn't always apply the first rule of capture - don't blow out shadows or highlights. Your primary step in color balance is to choose that fitting black and/or white point.
Little spikes at each end of the histogram indicate clipping – rather important markers. If spikes are black, you're okay. If not, you need to practice eliminating blown out areas in your histogram.

Reading Histograms
The underexposed histogram tells you 2 essential things: somewhere on the image, the red channel is blown, and, on the linear sensor distribution you're missing about half your highlights.
In the overexposed histogram, red, green, and blue channels are blown and you're missing about half your shadows. If you see yellow, cyan, or magenta, you have a combination of 2 blown channels.
Needless to say, when you get into high dynamic range photography, histogram interpretation gets much more complicated...

Solution
If you're shooting raw and you've blown a highlight or shadow (or heaven forbid, both), when you open the file in Lightroom or Photoshop, Adobe Camera Raw lets you make immediate corrections to black-and-white points. Simply move Exposure or Blacks sliders until vertical triangles go black.
If you want to learn more about histogram fundamentals, get a hold of one of Bruce Fraser's books Real World Adobe Camera Raw. Details may vary from book to book, but what you need is the well-written overview and how-to examples.


DSLR, Linear Sensor, nonlinear Eye, balanced histogram

Sensor Technacrati…
Bear in mind - digital cameras have a linear sensor. If you think of your eye as being a sensor, it's not linear; it's nonlinear! In other words, you and your camera clearly do not see the same way. So, it may help to learn to think like a camera - you get better images.
Here’s a diagram comparing important camera and human qualities. The big deal; where are most pixels in an image from a linear sensor? Upper 50% of the histogram…

Although there are other sequences of advanced steps which color balance and tone map your images to fine art perfection, our discussion is a pretty basic start!
So I urge - think like a camera, learn and use its remarkable capacity to your advantage, and you'll simply get better pictures...
Enjoy…

Nov 8, 2009

Lightroom 3 Promotes Creative Writing


Lightroom 3 beta, Folders Panel

Did you know LR3 can make your writing more creative?
Windows folder and Lightroom catalog after writing an article for a new project. aWhitePocket contains images. DinosaurDanceFloor and LocalFlowCells are primary folders with relevant geology. Time’sIndelibleFootprint hosts articles evolving from this project.
PictureWindows hosts the final article…

Creative Writing
Any writing, fiction, poetry, or non-fiction, that goes beyond bounds of normal professional, journalistic, academic, and technical forms of literature _Wikipedia.

Lightroom 3 significantly lowers writing’s technical bar. For me, creativity has two parts. First, I need to take that perfect picture. Second, looking at the picture creates a swift channel to the part of my brain where easy writing happens.
Now, I must say – Windows folders, available for nearly 15 years, have been unfriendly to this process; for the right image _too much search; _too little find. Yet, they are indelibly engraved in my finger tip consciousness. In creative mode, folders seem to grow with each new idea. There are image folders (full-size images for printing; small size images from manuscripts); writing folders; backup folders - pretty soon, old, tired ~ your mind sorta folds up and says 'enough of that…'!

Enter Lightroom 3!
With the new Folders Panel, photographers quickly create thumbnails of all images in evolving working folders. This works whether you’ve got one folder or several nested subfolder levels. Several nested folders are the inevitable result of creative writing.
But, Lightroom’s for Photographers, not Storytellers. So, it doesn't see Word documents, PDF files, anything else I create with Photoshop outside Lightroom, or all things created when you write and edit a story. I wish it did not take 6-10 diligent efforts to get feelings into good English…
Fortunately, Lightroom engineers got two very important steps right in Version 3. First, they automated bringing new images in, while ignoring dupes. Simply choose your working folder, press the Import button; Lightroom comes back with just those images you need to import, giving full view of only new images. Now choose Import again; bring them into Lightroom where you see them... Second, right click on working folder. When the dialog pops up, choose Show in Explorer. Bingo... now you in the correct Windows creative writing folder panel - working on all your other files.
You've gone from the left side of your brain, which sees images, to the right side, which writes English… Now, I really call that Creative Writing.

Lightroom let’s me see, has smoothed my technical obstacles path, and increased my productivity about 30%!
Don’t forget to tidy your Collections before archiving…

HUZZAH, Adobe Lightroom 3 Engineers!

Oct 27, 2009

Techno Weenies Trifecta


White Pocket, Vermilion Cliffs, Arizona

A collection of White Pocket image thumbnails courtesy Synnatschke, Parker, Ceccaldi, Liverman, and Schmickle…

Why Talk Trifecta?
Let's face it - if you've got a terabyte of hard drive space, finding an image or folder can be enough to break your heart.  Say you want to write an article.  Might take you a week; might take you two.  After a while, things seem to get lost in all those hard drive folders.
Enter Lightroom 3.  Yep, it's a beta.  But, beta aside, Hurrah to skilled Adobe engineers!  You literally see, in the newly revamped Folders Panel, I can do 2 very important functions
1.    See all images relevant to the article, and,
2.    See and work on other non image items in the folder to smoothly continue writing!
Thought of old graduate school days of library research, Xerox’s, or even handwritten notes …Arrggghhhh.  With Lightroom 3 - you can see what you're doing, you can write your article faster, etc..  I estimate a 20 to 30% increase in efficiency just using LR3 this exciting new way.  Unfortunately, it's still up to you to have that creative Muse grace your writing shoulder much less your viewfinder.

Cheers Aside - Let's Share a Rather Long Trifecta...
They always say, "Life's fine events come in 3’s..."!
This last few days seems like a fog; just about when free Lightroom 3 beta was announced, Frank Sirona, a German landscape photographer and good friend, wrote me a very intriguing letter.
Frank asked, "What would you think about putting together an article for... What I´m thinking of is an article describing geology and beauty of Coyote Buttes area in Vermilion Cliffs National Monument."

You guessed it; I fired up LR3b, looked at some of Frank’s images, then tried to segregate other Web images into three geologically distinct categories (Coyote Buttes North CBN, Coyote Buttes South CBS, and White Pocket WP).
So, why the fog?
Several reasons: flattered by Frank's suggestion, I went off on a geology/writing/photography bender.  After reading several technical papers, I had a sense of not only some of the incredible beauty at Vermilion Cliffs, but of the truly remarkable origin and affects of ancient rocks that make up this wilderness.  Almost immediately, I knew I was going to positively respond to Frank.
What I hadn't counted on was one of the facile new conveniences LR3b would provide.  Without any manuals, but with instincts honed from Lightroom 2, I began the rather intricate process of writing the dual article - geology and beauty – with LR3b’s now considerable help.
What's an intricate response?
I like to collect images, put them in Microsoft Word, pick up a microphone headset, and talk to the images.  You say; 'talk to the images'?  By that metaphor, I mean dictate words for the article and watch them 'magically' appear around each image.  What a marvelous way to simply let your memories, internal and external visual images, and spoken thoughts flow... it’s an amazing form of story tellin’!

Lightroom 3 beta, Folders Panel

With Lightroom 2, image segregation was facilitated in Collections.  In Lightroom 3, it's both in Folders and Collections.  At least in Windows, my writing process can spawn many folders following different ideas to completion of an article.
Welcome, LR3b - Adobe designer's now let me look through the Folders Panel not only at individual images, so I can organize them and my thoughts about the article – but - actually lets me go directly down to HD folder level where I can see relevant technical articles in Adobe's Free Reader PDF format.  Talk about Nervana! 
Now, I can both see and read as I compose.  Frankly, I wish I'd had this facility years ago when I stepped out of the bachelors and began graduate work.  It would've saved so much time...
Here's my current Folders evolution from LR3b.  Mind you, these folders evolved as I created the article. 

But what about dark chocolate atop the sweetest ice cream cone?
If I put a new image in an already used folder as the article grows, LR3b will quickly let me import just that image back into my proper folder.  On screen, prior images are dark whereas new images are light and checked.  You simply click Import...
what an incredibly subtle enhancement to reflective creativity!
Way_to_Go, Adobe engineers!!!

Ancient Culture
With years of writing about geology, I'm trained to look at rocks, confine them to a photograph, think about their origin, then try to explain all this in simple English.  If you check Frank's request, that's just what he wants.
Of course, you always need to be prepared for the unexpected...
Geologic articles need to talk about similarities and differences of a region like Vermilion.  That part was easy.  The hard part was trying to recognize two different cultures were very present at two vastly different times and places. 
All right, Joe, "What the hell do you mean - Two Cultures?"
Well, Frank, the first time I went to The Wave (CBN) 4 years ago, David Loope was kind enough to provide a GPS coordinate for Grallator tracks right across the valley.  Oops - sorry folks, a Grallator was a small Jurassic dinosaur who lived 190 million years ago.
As geologic research for this article has progressed, Grallator's ain't the only dinosaurs on that part of ancient supercontinent Pangaea.  Suddenly, I'm going from trekking an area and taking pictures to trying to learn where the area was when this huge Jurassic Navajo sandstone was laid down.  Geologic words like equator, tropical westerlies, supercontinent, plate tectonics, breakup, continental drift, dinosaurs, dinosaur tracks, sand dunes, alluvial episodes, slumps... the list is quite long, but it's not my intention to bore you silly.
To make a long story short, I'm now sitting on a long manuscript which Frank has yet to see, trying to complete the seemingly tenuous link between two cultures.  Yes, I've briefly described the geologic setting and its effect on millions of years of dinosaur life; Culture 1.

Recent Culture
But there's more...
as you can see from some images in our tentative summary above, White Pocket contains some of the most incredibly luscious photography nature photographers will ever capture. 
I'd be remiss if I didn't thank Steffen Synnatschke, whom I've never met.  It's Steffen's work, along with others listed above, which sets the digital bar and graces my visual steps back onto Pangaea.  They let me see what it was like in those oases where dinosaurs cavorted at the equator, left tracks, but no bones, and gorgeous, candy colored rocks slumped from too much water recharge and overburden pressure.  In these images (or tracks) would become what's now an seemingly ephemeral culture, preceding avid digital photographers. Ephemeral because our images will scarcely outlast dinosaur tracks.
It's also digital photography of people like Steffen which heralds the exciting Culture 2.  Mind you, dinosaurs were only seeking water and food; they left no record of the awesome beauty they saw.  But the avid digital photographer - willing to repeatedly travel across continents and use four wheel drives to brave deep sand can capture incredible beauty - he or she has left an incredibly awesome visual track a.k.a. a series of provocative fine art images.

So, in today's high-tech world, when we think of places to go and things to shoot (figuratively of course; perhaps capture our digital image would be more proper), we may not realize ~ we are the 'second' culture to leave tracks (oops - photos)! 
Yep, you got it; Culture 2and now, I've a trifecta!
Enjoy...

Oct 24, 2009

Dragon's Breath...


Dragon's Breath, NM, sunset, full range HDR



©Joe Bridwell


Children love this visual game…
“Tell me what you see in this gorgeous cloud picture?”

“I see lots of ruby gold colors.” A pensive, quizzical look appeared in her blue eyes.  “But also that dark blob of clouds on the left.”
A moment of silence, then more slowly, “I think… I see a dragon, mouth still open, who just belched fire…”
“Maddy, that’s truly amazing.  Can you tell me more about your dragon and its fiery breath?”
“Well, I can see its open throat, its still hot nostrils, even a place way back in its throat where fire starts...”  Maddy, who was beginning to really enjoy this game,  pointed to the burnished gold area amidst the black cloud behind the mouth.
“Maddy, you are really creative.  But, I am puzzled – where is this ‘belched’ fire?”
“Grandpa, you’re funny…” A smile appeared on her face.  “The fire is above the bright sunset…”
Stubbornly, I clung to this rather important question; “Maddy, I don’t still see fire.”
“Grandpa, bits of the fire are still there.  See the darkish cloud above the golden sunset?”  She giggled…
“Yes…”
“If you look real close, some of the cloud underbelly’s still glows golden.”
“What is that supposed to tell me?”
“Silly, it’s the big key.  My dragon breathed fire.  But, the sky was cold.  So, the fire turned to smoke…”  Looking at my solemn, disbelieving face, Maddy laughed with great glee!

I sat there, deeply amazed.  Maddy, who loved art, looked at this image, let her remarkably artistic imagination run, and found many exciting ways to let the image tell its creative story.
“Grandpa, you did not say anything about another important dragon feature…”
“What’s that?”
“Did you miss his eye?”
I looked again, more carefully this time – sure enough, Maddy did see the eye, which dimmed slightly after breathing the enormous gasp of fire…

Dragon’s Breath seems almost a fairy tale – the exciting exploration between imagination, photography, fine art, and emotional awareness.

Technocrati
The image is a final response to Full Range HDR.  Nikon D300, 14bits, f/13, ISO 200, shutter speed range: 2 – 1/8000 sec (a range of 15 EV).
Photomatic combination tone compressed at default settings.
Lightroom - global color balance – medium contrast, enhance lights, black clipping, exposure, fill light, clarity, vibrance, edge masking, luminance smoothing, crop.
Photoshop – local enhancement – Smart Object, Color Burn @ 20%, adjustment layer – Lighter Color @ 10% brush opacity – Final Dodge and Burn of throat, eye, and smoky breath…
For a thoughtful description of Full Range HDR, click here.

OOPs 11/24/2009
My thanks to Rhonda Fleming, ELCC - Rhonda pointed out that I screwed up the URL to download the Full Range PDF...  does old age get ANY better?
It's workin' now...


Enjoy…