Posts Tagged ‘Carla’

The Bentonite Hills

Capitol Reef National Park, UT. Given the vast area, it is simply not possible to photograph the entirety of the Cathedral Valley in favorable light in a single day.  Yes, I know, I said that you don’t always need the light of the golden hour to render compelling images, but there are practical limitations.  I believe that Cathedral Valley can be well-covered in two days, provided that weather and road conditions cooperate.  As I have observed in a previous entry, I believe that the preferred route starts at Caineville, at the opposite end of the ‘standard’ loop, which provides a formula for obtaining images of the lower Cathedral Valley or the western sections of the upper Cathedral Valley.  The significant missing element of this strategy is the opportunity to create morning-light images of the southeastern sector of the Cathedral Valley, and most notably, The Bentonite Hills along the Hartnet Road.

According to the Park geology website, the Bentonite Hills are part of the Brushy Basin shale member of the Morrison Formation, laid down in the Jurassic Period, from 156 to 147 million years ago.  The formation is characterized by low-lying smoothly-contoured hills, with bands of color that may include blues, greens, reds, and violets.  Bentonite is a silicate clay formed from volcanic ash that may include aluminum, calcium, potassium, and/or sodium.  Close up, the surface is rough and broken in what some has characterized as a popcorn-like appearance.  If there was ever an expanse that deserved the name ‘badlands’, The Benonite Hills is it.  Hardly a thing grows anywhere, not even exploratory shoots.

The Hills are most easily reached from the ‘standard’ route around Cathedral Valley, starting from the Fremont River ford.  The Fremont is a modest stream under normal conditions, and is usually easily crossed.  The road winds upward in to The Bentonite Hills, gaining perhaps a few hundred feet in a half-mile, entering the lower Cathedral Valley.  The Hills are about nine mile west of the river crossing, along a gravel road that can be traveled in all but the most inclement conditions.  The road leads pretty much straight though the middle of the formation, so that compelling images can be made looking north/south-eastward (morning) or north/south-westward (late afternoon).

Note that bentonite readily absorbs water (up to many times its own dry weight), and consequently the material becomes impossibly sticky when wet.  Thus, travel through The Bentonite Hills should not be attempted during or shortly after significant rain.

The images above were recorded at around 09:00 MDT on July 25, 2010, using the Nikon D3s and the AF-S NIKKOR 24-70mm f/2.8G ED lens at various focal lengths.  The 24-70mm it is remarkably sharp at all focal lengths.  A major critique is that it lacks VR – but I do not believe that this is a serious shortcoming.  I find this range, 24mm-70m, to be very serviceable in the field.

Copyright 2010 Peter F. Flynn. No usage permitted without prior written consent. All rights reserved.

High Priestess of the WhiBal

Carla, High Priestess of the WhiBal

One of the boilerplate phrases in the blog are words to the effect of ‘…white balance set using the WhiBal card…’.  What the heck is a WhiBal card?  How do you use it?  Where can I get mine?  Does it operate by itself, or do I need to do something?  Be patient friends, all will be answered.  First, the WhiBal card, or generically the white balance card: This is a high-class piece of plastic manufactured to exacting standards by a number of companies.  I use the ones made by the good folks over at RawWorkflow Inc.  The device is an updated version of the photographers ‘gray card’, which reflects light falling upon it providing (after compensation) a reliable color reference.

To understand the need for this device, consider the following situation…  You are standing in a room filled with both familiar and unfamiliar objects, and the only light source is a red lamp.  Can you properly identify the true color of objects in the room under such circumstances?  Well first, since you will recognize some of the objects, you will be able to guess their proper color even if they look weird in the red light – this is cheating of course, but you cannot help doing it so we forgive you.  Even if you didn’t recognize all the objects you would still be able to make a good guess of the color for all of the objects since your brain is fantastically good at compensating for shifts in the color of the reflected light.  Once your brain establishes a color shift compensation, all objects will be interpreted in the same way.

We need this, or at least our ancient ancestors did.  Imagine you are running around in the jungle at dawn and the jungle is all over bathed in beautiful morning light.  Having awoken with a ferocious appetite you scout around for something to munch.  Soon you spy what appears to be a lovely green apple in the lush overgrowth (it’s heirloom apples, apparently they grew that way).  Complicating things is that the glowing morning light shifts the color of light reflecting from the surface of the apple towards the yellow or the red depending.  Without the ability to compensate for the color shift, you might not even perceive the apple.  Worse yet, guarding the lovely green apple is a serpent of nearly the same color hidden in there amongst some leaves of, again, almost the same color.  Without the ability to color compensate you might just miss seeing the snake and get bit and, because in the ancient time all snakes were incredibly poisonous, your contribution to human genetics would tragically be cut short.

Okay, back to the card.  Unfortunately, our instrumentalities (cameras) are not very much like us.  They need to be calibrated so that we can interpret the data they generate in terms that represent something useful, maybe even artistical, to us.  A white balance card is just a convenient reference color made out of virtually indestructible material.  Photo processing software programs like Photoshop, Lightroom, Capture NX2, etc., allow you to establish a light shift compensation (think of it as an overall color compensation) using the white balance card, which can then be subsequently applied to other photos recorded in the same light conditions.

Finally, operation:  It’s up to you.  Here Carla, High Priestess of the WhiBal, demonstrates positioning the white balance card in the optimal spot for reflectance readings.  Note the ceremonial headdress and sacred goggles.

Inaugural Entry

Carla

Let’s start with a bit of the epic proportion. Like the mythical Paris, given a choice between wealth, power, and the love of a beautiful woman, I’d choose the latter (smart = me!). So, to grace the first entry is the most beautiful Carla. Notice that she’s not only looking fantastical, but also is carrying my camera stuff – awesome, ladies and gentlemen, just awesome. The image was made using the Nikon D700 with the AF-S Nikkor 14-24 mm f/2.8G ED. This is the default setup that lives in the bag and is the first choice in the field. Exposure was made at 1/160s and f/16 with ISO set at 640 and WB set for daylight.  The shot is from the top of the switchbacks leading to Angel’s Landing. The sun is at the far end of the valley – note the lens flare, and the light on Carla’s face is bouncing off of the canyon wall directly behind me.  In the background; looking not too shabby, are the ancient walls of Zion NP. The image was made mid afternoon on January 18. Excellent day, mid 60’s, clear, snow remaining in all the shady spots – this is Zion, there are LOTS of shady spots. Those of you who have been here know that past this point the terrain flattens out a bit before ascending again via Walter’s Wiggles. The Wiggles are in the shade virtually all day – at least at this time of year – and the trail was pretty icy. After making maybe a quarter of the way up the Wiggles; with increasing amounts of both icy-snow and exposure, we reminded ourselves that discretion is the better part of valor and headed back down. By the way, even in January the trail from the Grotto to Angel’s Landing is busy. The parking lot at the Grotto was full by 1 pm, and we met no less than 100 hikers along the way!