Monthly Archives: February 2010

Exploring the Power of Water 2

The Assabet River has crested and now will slowly work its way back to its normal lazy ways, but for now it still is packing a punch.

I did two and a half studies of different exposures of the river, ranging from 1/1000 second to 8 seconds.  The result is a rough guide for matching how the exposure times translate to particular moods that we might want to express from this rapidly churning water.

The first study is of a submerged island with water flowing around trees, starting at 1/1000 second and slowing down 1 stop at a time (essentially doubling the exposure time):

[qt:/video/water-seq-1.mp4 640 480]

From 1/1000 to 1/60 we see the river abstracted in a “frozen” form.  At 1/30 second the image changes to a different abstraction — one that implies fluidity.  1/15 through 1/2 second really appeal to me as a way of implying rapidly moving, turbulent water.  Starting at 1 second the image of the river’s turbulence is slowly transformed into something that might be considered almost tranquil (as astutely noted in a comment by Rich Rosenbaum in my initial article)

The second study was of a rock in the middle of the river which is creating a very dynamic bit of turbulence.  Because the situation around the rock varies so much, the first sequence shows two images at each exposure time starting at 1/1000 second down to several seconds.  We then zoom into the rock and work our way back to 1/1000 second.

[qt:/video/water-seq-2.mp4 640 480]

Despite being a very different subject I get more or less the same impressions from the same ranges of exposure times.  So I’m becoming confident that I now have reasonable set of exposure guidelines I can apply to fast moving water to produce certain effects.

All of the images were captured on a Canon 5D Mark 2, 70-200mm f/2.8L lens, and processed with Lightroom.  Some of the images were created using polarizing and neutral density filters. Fairly aggressive contrast tweaks were applied, plus a bit of vibrance, but they are otherwise unchanged.   The videos were created with Lightroom 3 Beta, which has a great new feature that allows exporting slideshows as MPEG-4 movies (although I did have to transcode it to H.264).

The image at the top of the page was captured with a 16-35mm f/2.8L lens (at 16mm) with a polarizing filter. It had the same post-processing as the images in the video, but a localized adjustment was made to increase the exposure on the oak tree trunk.

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Exploring the Power of Water 1


Nature has given me a chance to do a bit of a personal workshop on the power of water.  In case you didn’t hear, we’ve had a bit of rain here in central Massachusetts the past few days (5 inches in 2 days and a bit more coming).

The Assabet River flows through my backyard and we live by the section which has the most intense rapids pretty much for the entire length of the river.  Normally the river is pretty tranquil, but it has been roaring the past 24 hours as it approaches what may be a crest that puts it in the top 10 for the past 50 years or so.

While I think I do a pretty decent job conveying the river’s beauty when it is quiet, I’ve struggled with finding the right combination of exposure and angle when it is flowing briskly.  Translating this:

[qt:/video/20102-263-4614.mp4 640 360]

into a still image that conveys that power and intensity is difficult.

I only had a couple hours today to work out back, but I’ll have a good chunk of the afternoon tomorrow and most of Sunday to do some exhaustive studies on the river when it is close to bursting at the seams.  I’ll be sharing the results here and hope they will be of interest to folks in a similar situation.   I’m also going to be playing with video as well.

Above:

Canon 5D Mark 2, ISO 100, 70-200mm f/2.8L at 200mm, polarizing filter.

First exposure is 2 seconds at f/14.  Second exposure is 15 seconds at f/14 (additional 3-stop ND filter).

Video: Canon 5D Mark 2 (exposure unrecorded).  No post-processing (other than resizing for blog).

Processed with Lightroom: strong contrast, fair amount of clarity and vibrance.  Creative tweak: fill light and black point both around 45.  A rather cool effect.

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Ira Glass, Crap, Creativity and Serendipity

I haven’t done a lot of nature photography this winter.  Lots of excuses, none of them particularly good.  I’m doing a lot of other work, so it’s not like I’m getting rusty or anything, but standing by a river with a camera recharges my soul in a way that other subjects just don’t do (though, fortunately, many come close).

We’ve been finally catching up on a large backlog of podcasts here and we spent a day or two listening to “This American Life“, which along with “Radiolab” is perhaps some of the best radio ever made.  After listening to the master storytelling in these two programs I rewatched a set of YouTube videos where Ira Glass talks about storytelling and the message in the second video just whacked me over the head.  His words were about radio and video production but they apply equally to photography and really just about any creative pursuit.  These are not new ideas, but somehow hearing someone like Ira, who is at the top of his game, talk about this process was extremely visceral.  Here’s Ira’s wisdom on photography (even though he doesn’t say it explicitly):

All photography is trying to be crap.

I encourage you to watch this:

[youtube]http://www.youtube.com/watch?v=3qmtwa1yZRM[/youtube]

Shortly after watching this on my Apple TV I happened to visit a Flickr stream of a good friend of mine, Bob Travis, who regularly posts his photos online.  Bob is a true amateur photographer – he shoots for the love of the craft and it is integrated into his day-to-day life.   I got a big dose of envy looking at the past month or so of his images: jazz musicians, outdoor scenes, his cat (I assume it’s his cat).  They’re not all masterpieces, but that’s not the point.  They are consistently packing an emotional punch and Bob continually hones his craft.

So I got off my butt at headed outside, intent on photographing something… anything.  It was probably going to be crap but so what.  I needed to get back into a rhythm.  No car.  Damn. So short of a long hike I’d be photographing my tired old backyard.   Blaring afternoon sun with no clouds.  All the classic reasons to not do landscape photography.  Screw it.  Grabbed the 5D Mark 2, 24-70mm, and the tripod and headed down the stairs.

I wanted to push myself a bit.  I decided to stand in one spot and make as many photos as I could for an hour or so, so I plunked myself next to the river, staring into the glaring sun and a landscape I’ve photographed, quite literally, thousands of times.  The river helps because there really is always something different, but after a two decades of being at a single location there is some repetition.  Click.  Crap.  Click. Crap.

Hmmm.. what to do?   A few months ago I purchased an 3-stop ND filter for my video work (shooting video with a HDDSLR like the Canon 5D Mark II requires filters if you want to have control over depth of field since you are rather constrained on shutter speed).  Although I knew there were good photographic reasons to have the filter, I had not really used the filter for still work yet.  Bolted that filter on along with a polarizer.  In the viewfinder the reflections of the blazing sun was reduced to the equivalent of a full moon.

Cool, I’ll make a few long exposures of the river — no need to wait for a cloudy afternoon as I normally would.  There were a couple of clouds popping up so I might get lucky.  Heck, I’m just trying to make the best out of a lousy situation.  I spent a couple of hours working that spot and saw some promising images coming up on the review screen.  Later in the evening when I brought them up in Lightroom I realized I had stumbled into something I didn’t really expect, but what happened that afternoon might turn into a complete exhibit for me by the time I’m done exploring this technique and certainly will provide an image or two for my 2010 theme.

When you typically shoot long exposures of waterfalls or rivers one is seeking the misty or feathery look that is, to be fair, a bit of a cliché.  I was admittedly going for this with the filters and exposure settings, but what came back looked more like a particle collision from the Large Hadron Collider (hey, I’m a geek)…

Instead of soft light painting the image, the moving water and the strong sun was creating millions of specular highlights that traced through the image.

At a distance the images have a similar feel to the classic long exposures, but there is something different about them.  As you get closer the detailed traces of the individual drops of water and air bubbles all become visible.  Somewhat of a fractal experience in a way.  While I’m very much into documentary photography, I find abstract work to be where I get my biggest kick of endorphins.  I don’t know if others will find these images as beautiful and mesmerizing as I do, but I’m hoping it’ll touch a few others as it did for me.

My original shooting was with a wide-angle (24-70mm) lens and the magic was in the details, so I went out a couple days later with a different lens intent on exploring those details.  The 70-200mm lens was the next experiment and it produced some images that I’m very happy with, but I’ll likely push this even further with the 100-400 — although I start running into depth-of-field issues pretty quickly…  Plus I need to play more with different exposure lengths.  (Further rambling omitted.)  Of course now the weather forecast is for a solid week of overcast skies, so I’m going to have to content working on these images I’ve captured so far — and now I get to see what else I can do with a cloudy sky.

But all that technical stuff really doesn’t matter!

Whether or not these images translate to the large prints I think they’ll do well as, the lesson has been learned: get out and shoot.  Push yourself and be ready to find nothing but crap and toss it out.  But by the act of doing this you might discover something wonderful hiding in plain sight in the unlikeliest of places.

Thanks Ira!

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