Archive for February, 2010

The Wave Experience

If you follow photoblogs like this one at all, you will certainly have heard of ‘The Wave’.  I’ll argue that it’s not just a place, but more of an experience sort of thing.  Among other things, it is an adventure….

For many, the adventure begins with the quest for a permit.  The Wave is part of a specially designated section of Vermillion Cliffs National Monument known as Coyote Buttes North, and legal access requires you to obtain a permit.  Permits are available through an online application , however the competition for these is fierce.  The only option for many folks is to show up at the BLM Paria Contact Station by 9 AM (that’s Utah time) to participate in the permit lottery.  The ranger station opens at 8:30 AM and the rangers accept applications from the hopefuls, of which there typically 30+.  At 9 AM a bingo cage is set up and loaded with tokens for each application.  Note that permits corresponding to 10 persons total will be awarded – the actual number of permits released depends on the number of people in each of the successful groups.

The image above, of the HP in The Wave, was recorded at 09:53 MST on August 27, 2009, using the Nikon D700 and the AF-S NIKKOR 14-24mm f/2.8G ED lens at 17mm.  Exposure was f/16 at 1/200s, ISO 200.  One of the most surprising features of The Wave is just how small it is – maybe 100 meters square or so.  For this reason, although I am usually solidly against any sort of restrictions on access, I gotta go along with the permit system.

The date was August 26, 2009.  The room of literally full of people, a good fraction of whom are returnees from the previous day.  The HP and I were number 6.  The cage rolls, and a number chosen.  Is that 6 or 9?!!!  You gotta be kidding…6…we win on the first draw!  All those years of practicing good karma have finally paid off.  Now we can relax and see how the rest plays out.  Quite a lot of tension I must admit – resolved in the end into a mixture of joy and disappointment.  The odds are against you, and it’s a bit of a stunned feeling to be among the lucky few with winning numbers.  You have the rest of the day to contemplate your good fortune, since the permit is actually valid for the following day.

If it’s summer, and the weather is seasonal, you had better get an early start.  You will be in the open on sand or sandstone the entire day, and there is no shade anywhere.  Yeah, I suppose you could lay on the ground under a juniper bush, but that is just plain undignified.  No matter how prepared you think you are, I can assure you that you are inadequately prepared.  The rangers advise one gallon of water per person or the day.  Seems like a lot you are thinking… If you bring that much you will return to your car feeling like you are dying of thirst – if you bring less, you may actually be.  No joke, this place is as potentially deadly as it is beautiful.  Depending on your pace, it will take you between an hour and two hours to reach The Wave.  The final stretch takes you up a steep sandstone face that is covered with sand, and the tough going guarantees that you will need a short rest before you enter The Wave proper.

The image above, of the main body of The Wave, was recorded at 10:17 MST on August 27, 2007, using the Nikon D700 and the AF-S NIKKOR 14-24mm f/2.8G ED lens at 15mm.  Exposure was f/16 at 1/200s, ISO 200 (-0.67 EV).  This shot was made from a position a bit deeper into the main body than the previous shot that includes the HP (or maybe it should now be The HP).

I will divide The Wave into six areas; the antechamber, the main body, the grandstand, the cheapseats, the Wave2, and the backrooms.  As suggested by its name, the antechamber is the entrance to The Wave, and is among the most exciting parts of  The Wave experience.  It’s not just that it comes first, although that is clearly a big part of it, but the antechamber is beautiful in its own right, and the view looking north from its southern end is as good as it gets.  The main body of The Wave is just that.  Please do not linger in the main body.  There are no very good angles to shoot there, and you will totally mess up everyone else’s shot.  On the day we visited The Wave, a kooky little  French clown in red converse high-tops danced around in there for about 30 mins shooting freehand until a chorus of photographers chased him out.

The grandstand is where most of the photographers will be setup, and for reference is the point from which most published images of The Wave are/were shot.  It can get a bit crowded here, but most shooters are polite, and rotate positions often enough so that everyone gets a chance to make a memorable image.  The Wave2 is well worth a visit too, and although it lacks the intense color variations found in the The Wave, has deeper striations that are best complemented by the morning light – I said to get an early start, right?  The backrooms are all of the areas which lie south of The Wave and the grandstand and a bit east of The Wave2.

The image above, of the grandstand area shot from the cheapseats, was recorded at about 13:15 MST on August 27, 2009, using the Nikon D700 and the AF-S NIKKOR 24-70mm f/2.8G ED lens at 26mm.  Exposure was f/16 at 1/125s, ISO 200 (-0.67 EV).

I hope that you find these notes useful on your experience in The Wave.

An image of the Coyote Buttes North area appear below courtesy of Google Earth.  The entire route is shown, starting with entrance to the Buckskin Gulch near the top, to The Wave, towards the bottom  middle of the image.  The North Teepees; which are outside of the special permit zone, are to the right of The Wave.

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

The Myth of the Golden Hour, Part III

In Part II in the series we discussed an overlay method that improves definition in the highlight areas of the image.  Part II was published on January 22, and Part I was published on January 13.  In this installment, we will consider a method for enhancing contrast by application of a curves adjustment layer.  Our working image is shown below.

Currently, we have three layers: the top layer is a copy of the original unprocessed copy of the image in darken mode, a middle layer  overlay layer, and the original image on the bottom.  Let’s flatten the layer by opening the Layers submenu (click the downward point arrow in the upper right hand corner of the Layers tab) and selecting the Flatten option.

Then copy the resulting Background layer to generate a new Background copy layer.

A curious condition of RGB images is that the contribution of the red, green, and blue channels to the luminosity (contrast) present is not equal.  We will leave a technical discussion for why this is so for a future entry, but in fact the green channel is most important, followed the red channel and then the blue channel in the ratio 6:3:1.  This suggests that we could delete the blue channel and retain 90% of the current image contrast – it’s true!

To review the contribution of the individual channels we open the Channels menu, select Window on the Photoshop top menu bar, and then select the Channels item from the drop down menu.

By selecting the individual Red, Green, and Blue channels in the CHANNELS tab in turn, we can see what each of these elements brings to the overall image – note that when a channel is selected, the channel indicator turns blue ( assuming default Photoshop behavior).

Select the red channel panel to activate only that channel.

Select the green channel panel to activate the green channel only.

Finally, select the blue channel panel to activate the blue channel.

Careful review of the individual channels confirms that they are all about equal in terms of providing elements of contrast to the image.  This will not always be the case, especially in images recorded in red rock country.  In this case, the most straightforward approach to improving contrast will be to apply curves adjustment to the individual red and green channels (the blue channel may be adjusted, but in practical terms, such adjustments have minimal impact).

Begin by conducting a merge-copy by typing <cntl><shft>alt>e (<cmd><shft>alt>e on the Mac)  This merges the current three layers into one layer, and then copies that layer on top of the others.  We could have simply flatten the three layers and then copied the result, however the merge-copy gives us a bit of additional flexibility, e.g., we could always delete the merge-copy layer and then rework the darken or overlay layers.

So that we can remember how all the current layers were generated, let’s rename them by selecting (double-click) the text in the LAYERS tab.

We now load the red channel by selecting that channel in the CHANNELS tab, and then apply a curve to the channel by typing <cntl>m (<cmd>m on the Mac).

Notice that I have steepened the curve near the maximum on the right hand side of the histogram (note that I have rendered the histogram so that it displays the amount of light – this is the default setting, however I usually rig it to show % pigment/ink).  The right side of the histogram is where the luminosity of the lighter rock surfaces is represented, and steepening the curve in this region increases contrast in the rocks.

We apply a curves adjustment to the green channel to further enhance the contrast in the rocks.

Since we are working in RGB color space, luminosity and color are intrinsically tied together.  Thus the curves we have applied to the red and green channels generate not only a change in luminosity (contrast in the BW sense), but also a color shift.  We can fix this easily by simply changing the blending mode of the Merged-copy Layer to luminosity to produce the contrast-enhanced (only) image shown below.

Compare this image (above) to the one we started with in this entry (below).

Next, we merge-copy to generate a new layer on top, and change the blending mode of the new layer to multiply.

Finally we adjust the opacity to until things agree with our vision of the place, about 60%, to finish up this lesson.

This was a long discussion, perhaps too long for most.  Anyway, I hope you find it useful.  Send questions if you got ’em.  There is a quote by Edward Weston that I favor: “Photography to the amateur is recreation, to the professional it is work, and hard work too, no matter how pleasurable it may be”.

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