A Counter-intuitive Tip To Tack Sharp Photos With A Long Lens

The hues of twilight cast offshore sea stacks in a blue glow as waves wash around them, Crescent City, CA
The hues of twilight cast offshore sea stacks in a blue glow as waves wash around them, Crescent City, CA

On my recent trip north up the California coast to photograph redwoods and rhododendrons, I also had an opportunity to shoot sea stacks just offshore in Crescent City, CA. After shooting a bit with my 70-200mm, I really wanted to go for a unique perspective of these rocks and stack them on top of one another. So I grabbed my go-to bird lens, the 800mm f/5.6. Using a Canon 7D with a cropped sensor gave me an equivalent focal length of 1280mm.

I waited until the sun set, giving me photos with the cool blue of dusk, and allowing me to slow my shutter speed to turn the crashing waves into a calming mist. This is the effect I was after – hard, sharp rocks shrouded in a blue fog of moving water. However, as soon as my shutter speed got longer than 1/100th of a second and started creeping toward the 1 and 2 second mark, the results on the back of my LCD were horribly blurry.

In normal shooting conditions with this lens, I never like to let the shutter speed drop below 1/250th of a second, and only if I have a stationary subject do I lock down the gimbal head on my tripod and go for something slower. But usually 1/100th of a second is my slowest usable shutter speed. What to do in this situation? Even by bumping the ISO very high I couldn’t achieve a fast enough shutter speed in these darkening conditions, and doing so would also counteract the effect of the moving water.

The solution seemed counter-intuitive at first. I found that by greatly lengthening my exposures, I was able to achieve much sharper results! The initial blurriness I was seeing was caused by the shutter vibration, amplified by the extremely long focal length (and yes, I was using mirror lockup). When I increased the exposure time, the percentage of time that the mirror shake impacted the overall exposure time was reduced, thus creating a sharper image. Using this principal, I found that by exposing for 30 seconds, I was able to achieve the sharpest results.

A couple things to keep in mind. First, this technique will only work if there is no wind. Even a slight breeze will blow a huge lens like that back and forth, ruining any chance of a long exposure. Second, make sure to check sharpness by zooming in to your resulting photo on the camera’s LCD. Never trust sharpness from a photo displayed 3 inches across – everything looks sharp when it is that small!

So next time you’re out with a giant lens trying to do landscape work (really not a very common combo!), remember to experiment with the slower shutter speeds. You might just find some sharpness in there.

Salt Point State Park

Wind and water sculpted sandstone creates an alien landscape along the headlands of Salt Point State Park, California

Last week I spent a few days at Salt Point State Park, along the California coast just north of Jenner. The state park encompasses over six miles of shoreline, as well as miles of interior trails through coastal forest. This portion of the coast is one of the most dynamic in the state, made so by acres of sandstone, shaped over time by the strong waves and stronger wind, creating an alien landscape of stone and water.

Although the sky was clear and the sun was out, the temperature never topped 60 degrees. Windy conditions persuaded most people to stay away, entrusting the entire length of coastline to me alone. By early evening, the wind really picked up with gusts between 30 – 40 mph. I had a hard enough time just staying on my feet much less keeping my tripod steady. The wind was only outdone by the strength of the massive waves breaking against the rocky shore.

Waves crash against sandstone headlands, Salt Point State Park, California
A wave blasts a sandstone point as the ocean's energy turns water into a milky froth, Salt Point State Park, California

In the mornings, the wind from the night before had subsided, but the ten to fifteen foot waves were no less fierce.

Huge waves crash over offshore sea stacks, Salt Point State Park, California

The variety of the landscape was impressive. I found myself walking through fields of recently bloomed wildflowers, back-dropped by sheer cliffs plunging to an azure ocean. At low tide, pools appeared among newly uncovered rock, offering a glimpse into the lives of the sea dwellers who live there.

Wildflowers adorn the coastline of Salt Point State Park
Tidepools adorn sculpted sandstone headlands, Salt Point State Park, California

The park was home to a variety of wildlife, from song and shore birds to seals, lizards, and an abundance of healthy looking deer. Ultimately it was a brief few days, but a welcome respite from the bustle of the Bay Area. There was much more to see at Salt Point than time allowed, and I know I’ll be going back there in the future.

A harbor seal clings to an offshore rock as waves splash around it, Salt Point State Park, California
A white-crowned sparrow perches in morning light, Salt Point State Park, California
A white-crowned sparrow forages through fields of wildflowers, Salt Point State Park, California

Sunrise at Pescadero State Beach

A couple of weeks ago I headed out to Pescadero State Beach for sunrise. I picked a weekday to make sure I had the place to myself. I arived about a half hour before sunrise to catch some of the early light peaking over the eastern horizon, and get some long exposures of the surf before the sun actually hit them.

Pescadero has three separate parking areas off of Highway 1. For photography, my favorite is the middle one because of the interesting rock formations just off the coast. For wide sandy beaches, either the northern or southern lots would be the best bet.

The following two images were taken of the surf swirling around some off-shore rock formations. Because of the very low ambient light, a long exposure was needed, which gives the water that misty smoke look.

Ambient light casts the scene in shades of blue, Pescadero State Beach, California
The movement of the tidal flow is captured by a long exposure in pre-dawn light along the California coast

At this time of the morning, the sun hadn’t yet risen above the horizon, but the eastern sky was reflecting some vibrant oranges and yellows. The image below was taken facing east, in the opposite direction of the previous two photos.

Morning light crests the horizon and is reflected in a shallow tidal estuary, Pescadero State Beach, California

Once the sun had peaked the horizon, the western sky finally was lit up in the reds and oranges of sunrise. The following image was taken just after sunrise, looking west. The light was dim enough to still require a long exposure (though not as long as the first two images), but now the sky and water were a completely different color.

A high tide moves in over off shore rocks at dawn, Pescadero State Beach, California

And looking south, the morning light was even more spectacular.

Pastel oranges and aquas emerge at sunrise, Pescadero State Beach, California

About 20 minutes after sunrise, the entire landscape was well lit. The truly special light of “magic hour” had gone, but with the sun still so low on the horizon, everything was bathed in soft warm light, with no harsh shadows. The following images was one of the last I took before I packed up my gear and headed home.

Morning light touches the orange sandstone cliffs at Pescadero State Beach, California

Copyright 2017 Hank Christensen