Specious Argument

In an earlier post, I mentioned that I was working with Dan Margulis and several other beta-readers to complete Margulis’s book Photoshop LAB Color: The Canyon Conundrum and Other Adventures in the Most Powerful Colorspace (2nd Edition) (Amazon affiliate link). We completed our task and his book has been available on Amazon since late July.

Although the beta-reading process was demanding, I thoroughly enjoyed working with Margulis and the other beta-readers. It was demanding because we had to read each chapter carefully, perform the exercises, and provide comments that might be helpful to Margulis. He read our comments and decided whether to use our suggestions. After each chapter was complete, in a private forum Margulis singled out beta-readers who spotted something unusual and who had particularly helpful insights. For example, if we all spotted the same item, none would be singled out. However, if three or less of us found something, then he would mention our names. While we beta-readers worked hard, I know that Margulis worked much, much harder at creating the content, reviewing all of our comments, and then reworking his chapters.

In choosing his fourteen beta-readers, Margulis picked people who represent different segments of his audience. I represented the advanced amateur. Thus, I might have had to work somewhat harder than most because my skills and experience are not as strong. I had an advantage, however, in that I had to rely on what was written and not my own background and skills.

The reason I enjoyed the process so much is that I worked hard, learned a lot, and met some great people in a virtual setting. It’s fun to be part of a successful project where I can contribute and give back to the larger photography and Photoshop communities. And, of course, I am always happy to help my friend, Dan Margulis. I am grateful that he allowed me to be a part of his team.

I wrote a review of the book on Amazon, which I have included below. If you are a Photoshop person, I highly recommend Margulis’s book.

My Review on Amazon.com

Many years ago, I purchased Dan Margulis’s book “Photoshop LAB Color: The Canyon Conundrum and Other Adventures in the Most Powerful Colorspace.” At that time, I didn’t understand Photoshop’s channels and certainly didn’t understand LAB colorspace. Being relatively new to Photoshop, I was eager to dive in and learn. When I finished the book, I had an understanding of channels and LAB.

To many people, LAB seems like an esoteric and foreign colorspace. I found, however, that LAB made more intuitive sense than RGB. For example, I know that for the A and B channels, positive values are warm and negative values are cold. I like that the L channel is luminosity. To me, LAB readouts are logical and intuitive.

While I still do some of my work in RGB and occasionally in CMYK, my workflow makes extensive use of LAB. It’s in LAB where I boost or strengthen colors. Once you read the book, you’ll have a better understanding as to why more than one colorspace is used to complete an image.

Dan’s latest book is, of course, even better than his original book. Over time, Dan gained more knowledge through experience, and much of that knowledge has been passed along in his latest book.

In reading both books, I found that some of the supposedly easier chapters were more difficult than some of the supposedly more difficult chapters. Dan’s books require concentration to fully absorb the material. My process with the first book was to read the book cover to cover and then to reread it again. Then, I selectively reread portions where I needed further review. Having the good fortune of being chosen as a beta-reader for his latest book, I read each chapter as soon as it was released. Even with my prior background, I still had to work at fully understanding everything. Furthermore, I often read the chapters more than once.

While the prior paragraph might make the book seem overly difficult, that would be the wrong impression. Instead, you must be prepared to work to understand the material, especially if you are still on the steeper portion of the learning curve with respect to Photoshop. I am not a Photoshop guru. If I can learn the material, so can you.

Is LAB a cure-all or some magical colorspace that solves all issues? No, neither. Instead, LAB provides you with more arrows in your quiver. As you read through the book, you might find yourself occasionally thinking “I might tackle this issue in another colorspace using a different approach.” That’s perfectly acceptable. Dan’s book is geared toward LAB. So he does everything in LAB to show you some different alternatives. You might find that you combine some of your techniques with his. There are, however, many methods or techniques within LAB that can’t be duplicated in other colorspaces. And, that makes LAB extremely powerful. Dan’s book provides you with additional resources that you might not have possessed.

Having said all that, let’s quickly review the chapters.

Chapter 1: The Canyon Conundrum

It’s a quick introduction to LAB. You will see LAB at work with some easier examples.

Chapter 2: LAB by the Numbers

Readers begin to understand how numbering systems work and how the channels work.

Chapter 3: Freedom and Responsibility

You learn about the power of LAB. One of challenges is not going overboard with LAB. The overall aesthetic you are trying to achieve will determine how much extra color you may decide to add.

Chapter 4: Too Much is Just Right

Throughout his book Dan teaches us that it is better to go too far, and then back off the intensity. He presents several methods for doing so. Another key learning is that it’s okay to go too far so long as critical elements of the photograph are kept in check. One challenge when working on images, however, is that we often become desensitized to our own creative work.

Chapter 5: Knowing Right From Wrong

Earlier I mentioned that I found LAB more intuitive because positive values in the A and B channels are warm. This chapter takes that whole discussion much further.

Chapter 6: Sharpening for The Impressionist

Dan provides a comprehensive discussion on sharpening, including why you might sometimes want to sharpen in LAB.

Chapter 7: Entering the Forest: Myths and Dangers

Some common misconceptions and myths are explored. As an example, is the best way to convert to a black and white image simply to use the L channel from LAB? While I won’t provide the discussion, the answer is, no.

Chapter 8: The Readers Sum It Up

Here the beta readers contribute some of their knowledge and experiences.
As we enter the second half of the book, the material generally is more advanced. As mentioned, sometimes you may find the more advanced material easier than the earlier material.

Chapter 9: The LAB Advantage In Selections and Masking

I found this chapter very powerful because it unleashes how to use LAB and its channels to create very effective masks.

Chapter 10: The Product Is Red But the Client Wants Green

For those that often change colors, say of garments, this might be the most important chapter for you. For others, it is more arrows in your quiver.

Chapter 11: The Imaginary Color, The Impossible Retouch

LAB allows us to create colors that are impossible, imaginary colors. We can sometimes create these colors to put color back into blown out and overly dark areas.

Chapter 12: The Best Retouching Space

For certain types of retouching, LAB has advantages over RGB and CMYK colorspaces. Dan provides some great examples of where LAB excels.

Chapter 13: The Music of Noise

Marco Olivotto, another beta-reader, largely wrote this chapter. It was one of the most popular chapters for our beta reading group. The topic, of course, is noise reduction.

Chapter 14: Command, Click, Control

I enjoyed this chapter because I learned how to easily create color differentiation amongst items that have a similar color.

Chapter 15: LAB and Video

Dan shows how LAB can be used in Photoshop to add more punch to your videos.

Chapter 16: The Universal Interchange Standard

Dan provides a discussion on colorspaces, color models, conversions, and calibrations.

Chapter 17: Blending With the A and B

A and B channels are used in creative ways for blending purposes. Even though A and B contain no detail, they can be used as blend sources to separate objects based on their color.

Chapter 18: Canyons, Concepts, and Changes

In many respects, this chapter is a review and discussion of the prior material readers have been exposed to.

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The book contains a tremendous amount of information. For those of you who have read his first edition, you should know what to expect in terms of difficulty and rewards. For those who are new to LAB, this book will be extremely beneficial. At times, you will likely find it challenging, but your prize at the end of the process will be worth your effort. You will have a much better understanding of channels, LAB colorspace, and what LAB can do for you.

For my own personal work, when working with LAB, I am faster and more efficient. And, most importantly, I get much better results.

I arrived at Calgary’s Peace Bridge on Sunday, July 19, 2015 just before sunrise and shot this photograph. The cool morning tones with just a hint of pink sky in the background, along with almost even lighting, creates an interesting photograph.

For those who are not aware, the Peace Bridge is a pedestrian bridge that crosses the Bow River in Calgary, Alberta. Santiago Calatrava is the architect who designed the bridge. Because of its costs and delays, it was a controversial project. Despite its initial issues, I like its striking design.

Although I have been busy, I wanted to share with you this latest photograph.

On Thursday, June 25, 2015 I took a photograph of the Nat Christie Centre, current home of the Alberta Ballet.

I have wanted to take a photograph of this historic building for some time. One of the challenges, however, is that it faces north, which at Calgary’s latitude of 51 degrees means that the sun rarely kisses the front of the building. June 25 is very near the summer equinox, when the sun is at its furthest northern point. I was able to capture this photograph during the late evening at very nearly 8 p.m. when the sun was low on the horizon, at about 15 degrees. I like how the sun casts warm shadows across the building.

I recently attended an Alberta ballet lighting presentation in the Nat Christie Centre. One interesting thing that struck me was that the dance studios are warmer than typical room temperatures. The reason for heated studios is to keep the dancers’ muscles warm, thereby reducing injuries.

The Nat Christie Center itself has an interesting history. Constructed in 1905, the building initially served as a parish hall for St. Mary’s Roman Catholic Church, including a 500-seat theater used for various purposes by the community. Later, in 1911, the Canadian Northern Railway bought the building and surrounding property. The facility continued to serve as a train station until 1971. Then, in 1979 the city of Calgary purchased the train station, and it was designated a provincial historical building. Five years later, with funding from the Nat Christie Foundation, Alberta Ballet became its latest and current resident. You can perhaps read a more complete description at the Collections Canada Alberta Arts Heritage website.

When this article was originally created, I was able to link to a specific page at Collections Canada Alberta Heritage. That page has been removed and I have not found a replacement.

Erin provided two helpful links in her comment to this article.

This past weekend, Rachel Notley, leader of the New Democratic Party, was sworn in as premier of Alberta.

Because the last few premiers have not been good, I had hoped that Jim Prentice would be our next elected premier, and that he would be able to make many improvements. Prior to the campaign, however, oil prices crashed and Albertans became grumpy, and, during the campaign, he made a few but critical political stumbles. That and because people were hungry for change, he was defeated.

So here we are with a left leaning leader. Now, many Albertans are overjoyed while many others are fearful. For those that are overjoyed that their left leaning voices will finally be heard and acted upon, you’re in for disappointment. While I expect your voices will be heard, the reality of low oil prices will not allow the NDP to enact many of its desired changes. And, for those that are fearful, relax. It won’t be as bad as you fear. The NDP will realize that many Albertans did not endorse their platform, but rather voted for change. So it will have to adapt to the needs and wants of Albertans while operating within Alberta’s political and economic constraints. That will not be easy.

Because of the economic realities, the next four years are likely to be challenging. It wouldn’t have mattered which party assumed power. Having a new party with a new leader isn’t such a bad idea, though. Notley can review prior government decisions and actions to make improvements where possible. That’s a good thing.

The Progressive Conservative Party can regroup and assess its errors. With this defeat, some of the arrogance and feelings of entitlement should be diminished. Moreover, it’s a good wake-up call to the corporate sector that not all Albertans share their viewpoints.

The next four years will prove interesting. I wish Premier Rachel Notley well as she launches into her new role. While her job won’t be easy, I am positive that it will be interesting.

For another viewpoint, Ian Austen of The New York Times wrote, “After a Political Reversal in Alberta, ‘Anything Seems Possible’.” Please note, a subscription to The New York Times might be required.