book reviews

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Author: David Nightingale

Publisher: Focal Press (Elsevier)

Reviewer: Conrad J. Obregon

A physicist acquaintance who specializes in digital imaging tells me that increasing resolution or reducing noise in digital sensors are much easier problems to solve then extending the range of light of sensors to equal the human eye. In the unlikely event that you are a serious photographer who has been waiting for the dynamic range of digital sensors to increase rather than deal with high dynamic range (HDR) it would be better to get over it. This book is an excellent place to start.

Nightingale’s book, Practical HDR: A complete guide to creating High Dynamic Range images with your Digital SLR is divided into chapters that include understanding dynamic range, shooting for HDR, merging bracketing sequences, creating photo-realistic and hyper-real HDR images, and post-processing.

The author recognizes that there are many HDR software packages on the market and rather than try to describe them all, he only touches on three. They include Photoshop, which at least as far as the CS4 version, he dismisses as not very useful, and the quirky but occasionally useful FDRTools. The lion’s share of the instruction is devoted to Photomatix Pro, which is rapidly becoming the standard for HDR. Unlike several other texts, he explains what each of the sliders and buttons in Photomatix does and what compensating adjustments have to be made if you select one of the more specialized sliders. He also covers post-processing of HDR images in Photoshop at a level of detail sufficient for those familiar with Photoshop to clean up the HDR image, rather than just suggest the tools that might help. He also provides several examples that give detailed step-by-step explanations of how he used the options available in both HDR software and post-processing and the reasons he selected those settings. Sprinkled throughout the book are HDR examples created by several expert photographers.

Nightingale writes concisely and clearly. I particularly liked that he distinguished between images where the range of light was extended but the images remained realistic, and HDR images that seem almost surrealistic and more like illustrations than photographs. The author shows you how to create both types of image, and clarifies which controls lead to which results.

Although this is one of the best books about HDR that I’ve encountered it is not perfect. For example in capturing images, I’ve found that it pays not only to insure that the bracketing images are made by varying the shutter speed rather than aperture to keep the same depth of field, but also to turn off auto-focus and auto-white balance to prevent too much variation from image to image. Moreover, when it comes to processing, other than to refer to FDRTools’ capabilities to deal with motion between bracketed images, there is little other discussion of the motion problem. On the nice-to-have level, it could have been useful to deal with tools like Photomatix Pro’s Lightroom plug-in which extends the utility of the software. Similarly, providing images that were downloadable or on a disk might have made it even easier to follow the examples, especially with available trial versions of the HDR software.

Nevertheless, I still find this one of the best books available on the subject, and I intend to keep it in the small library of books next to my computer to which I regularly refer.
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This post sponsored by the Digital SLR Store

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Author: Ted Dillard

Publisher: Lark Books (Sterling Publishing Co.)

Review by Conrad J. Obregon

Smart Object Pipeline: Revolutionary Tactics for the Photoshop Layer Workflow

Warning! This book is only for experienced users of Photoshop (PS) and the Adobe Camera Raw Plug-in (ACR).

Although smart objects have been around since PS 2, and although most PS authors make at least some reference to them, this is the first photography book devoted to them. (A smart object is an image file that you can reedit and readjust in ACR, even after opening in the main PS. The purpose of this attribute is that it may be easier (and according to the author) less destructive of image data to adjust in ACR.

The book opens with a lengthy review of RAW files, ACR, and PS layers and masking (as well as an introduction to the smart object) to the extent, and only to the extent, that this knowledge is key to the author’s process. Once this is done the author explains how to use smart objects, and related smart filters, to adjust images, primarily through selective adjustments and including more advanced techniques that one might never encounter if one were not using smart objects to adjust an image.

To me, smart objects are most useful, first, when there is a chance that one might want to go back to the original RAW file to recover more data from the original image; and second, when one is applying a non-editable filter or certain image adjustments to an image, like unsharp mask, that one might want to change in the future. Dillard caries this a step further, preferring ACR smart filters instead of adjustment layers.

What the author hardly mentions is that using smart objects creates files that are several times the size of a picture adjusted with adjustment layers, and that each time one returns to ACR for an adjustment a great deal more processing power and time is taken then with adjustment layers. This may not be an overriding consideration in this era of cheap storage, fast processors and huge amounts of RAM, but I, for one, am already running out of space for internal and external disk drives.

In PS there are many different routes to reaching a desirable image. Some users prefer to use ACR only to capture the most data while other users prefer to do most of their adjustments with the plug-in. Certainly the author’s method offers another technique that may prove useful in particular cases, and so, for experienced users, anxious to add to their personal tool box, this book may be worthy of consideration.

I must confess to being put off by many of Dillard’s suggestions about using PS that run so contrary to the common wisdom, like sticking with 8 bit processing, and dismissing the recovery, fill, clarity and targeted adjustment functions of ACR on the grounds that the same tasks can be accomplished in curves. I found his sharpening suggestions, like always sharpening at a radius of .5 pixels and sharpening at output size rather than 100%, incredible.

Occasionally there were suggestion for techniques that I had, I’m embarrassed to say, not discovered, like changing a mask color from white to black, using invert.

I doubt that I will ever adopt most of the techniques in this book. On the other hand, the book increased my sensitivity to the use of smart objects and filters.

In summary, if you are an experienced user, are willing to consider new techniques, can decide when recommendations can be rejected and are willing to read a PS book solely on the chance that you will add a valuable tool to your arsenal, this book is for you.

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Art Photography Now

Author: Susan Bright

Publisher: Aperture Foundation

Review by Conrad J. Obregon

Even the author Susan Bright admits in her introduction that Art Photography is hard to define. (Some aestheticians even claim that photography is not an art.) She appears to offer an operational definition. If it’s taken with a camera and people are willing to pay for it and hang it on a wall then it is art photography. The problem for Bright is that that definition includes images by artists ranging from Annie Liebovitz and Art Wolfe to the most extreme of the post-modernists and it is clear from the pictures in the book that that is not what Bright is presenting. Instead she seems to be aiming at some middle ground. Continue Reading