Green Frog - The Story Behind the Image by Todd Henson

Portrait of a Green Frog

I was hiking through Occoquan Bay National Wildlife Refuge on a late April afternoon with a group of friends. We were there to photograph a pair of nesting osprey who had built a nest atop a duck blind in the bay just off one of the trails. It was a great location that provided very good views of the osprey and the nest, and it worked for both morning and afternoon light. Morning light lit up one side of the nest and afternoon light lit up the other.

When we’d finishing photographing the osprey we continued down the trail. These types of locations can be hit or miss, you never really know what you might encounter. Before the osprey nest we’d found a northern black racer snake moving from the brush towards us on the trail. After the osprey nest we watched and photographed a pair of red-breasted merganser diving for fish in the bay. But the next encounter, a lone green frog, is the subject of this story.

We were walking along one of the trails heading back to the parking lot, as it was getting close to the time the gates of the refuge automatically close for the night. The trail splits two wetland areas and runs along marshy terrain. This stretch is often more humid and bug-ridden than some of the other trails, with flying biting bugs and ticks on the grass along the trail. The trail itself is a service road with a patch of grass between the two tire trails. Halfway along this trail we ran into a lone green frog sitting in the middle of one of the tire trails. Honestly, I didn’t even notice the frog. I’d been watching the treeline for birds. But one my friends spotted the frog and started photographing it.

One of the early lessons I learned in wildlife photography is to capture an image early if the shutter sound won’t scare off whatever you’re photographing. This assures you get a shot, even if it’s not the best shot possible. I like to both document wildlife and try to produce the most pleasing photographs I can. So I document first, then take the time to create a pleasing image if the wildlife decides to stick around.

The green frog proved very accommodating. The first photograph I made was from full tripod height looking down on the frog. This was the documentary shot. Even if the frog hopped back into the brush I had an image. I was using a Nikon 200-400mm f/4 lens with a 1.4x teleconverter on a Nikon D300 camera body. With the teleconverter the lens has a focal range of 280-560mm. For the first shot I had the lens zoomed out to 550mm at an aperture of f/8. The ISO was at 500 giving me a shutter speed of 1/100 sec. That’s a little slow for 550mm but the subject was not moving and I was on a tripod.

Green Frog. First attempt, assuring I can at least document having seen the species.

When the frog continued to pose, never moving, I took my camera off the tripod and got down near the ground to try to capture a more pleasing image. Being lower and at less of an angle allowed me to capture more of the frog in focus. I also stopped the aperture down to f/11 and raised the ISO to 640 giving me a shutter speed of 1/80 sec. The photo is still angled slightly askew, but I like the image better than the first one.

Green Frog. Second Attempt. Getting better.

I felt I could still do better. So I lay down on the grass in the middle of the trail and placed my camera and lens on the gravel, as low as they could possibly go. I also inched a little closer to the frog and made sure the frame was level. This put me at 330mm, still at ISO 640 with an aperture of f/8 and a shutter speed now at 1/160 sec. This resulted in the third and final image, the one I’m most pleased with. Being parallel to the frog allowed me to keep most of the frog in focus. Being at the same level as the frog, ground level, allowed me to throw the background completely out of focus which helps the frog really stand out.

Portrait of a Green Frog. Final Image.

Having captured what I felt was a really nice image I put the camera back on the tripod and we all headed towards the parking lot. Remember how I mentioned the bugs along the trail? I was so engrossed in photographing the green frog I never thought to look for ticks in the grass I was laying in. When we reached the parking lot one of my friends stopped me and came over to look at my face. He found a tick right between my eyes. Thankfully, it hadn’t been there long so he was easily able to remove it. I was amazed I hadn’t felt it, but then again, I’ve never felt any of the ticks that’ve bit me.

So when the day was finished I’d had a very enjoyable hike with a group of friends and created at least one photograph I was very happy with. And I was able to learn a couple lessons along the way, which is always a good thing. First off, always check yourself for ticks when returning from a hike. If you can remove the ticks quickly you’re far less likely to contract any of the diseases they can carry. The second lesson was related to the final photograph. If I were to do it again I would likely stop down the aperture a bit more, perhaps to f/11, to try to capture a little more depth of field, giving me more of the frog in focus.

The final version of Portrait of a Green Frog is available for purchase as wall art or on a variety of products.


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Comparing Infrared to Visible Light by Todd Henson

Infrared image of Quantico Creek along the Birch Bluff Trail in Prince William Forest Park

I continue to be fascinated by infrared photography, even though my setup isn’t ideally suited to it. To take the most advantage of infrared photography you likely should convert a camera, making it a dedicated infrared camera. But in my case I simply use a filter over the lens that blocks out virtually all visible light, leaving only infrared or near infrared. The problem with this approach is that most cameras come with an infrared filter right over the sensor. This is meant to block the majority of infrared light because infrared can cause fuzzy photos. So there’s not a lot of infrared light that actually makes it to my sensor, requiring long exposures to soak up enough light to make an image. My experiments in infrared usually require exposures of several minutes even with higher ISOs. This increases motion blur and contributes to noise, especially since my camera is not one of the more recent models with great high ISO capabilities (though it is decent).

But regardless of this, I’ve enjoyed using the add-on filter to see what I can do with it. I’ve started taking photos both with and without the filter so I can compare the two images, see how the infrared differs. Perhaps one of these days I’ll also try a composite image combining aspects of both visible light and infrared.

The images here were made along Quantico Creek on the Birch Bluff Trail in Prince William Forest National Park. They are not particularly remarkable landscape photos, but were made as experiments. It’s interesting to note how the infrared version differs. An obvious difference is the light glow of anything warm, such as the leaves and some small portions of the rocks. Being a several minute exposure the infrared photo has smoothed the water. The water is cool, so it stays dark and we can’t see much under the surface, but we do get a reflection of the trees and leaves.

Here is the natural light image

Here is the infrared light image

I’m enjoying infrared enough that I suspect one of these days I may go the expense of converting or purchasing an infrared dedicated camera. That would allow much faster shutter speeds, lower ISO, and reduce the noise.

One of my past infrared experiments was at Kenilworth Aquatic Gardens, where I photographed their small bridge in front of the lotus ponds. And I made some infrared images of the Martin Luther King, Jr. Memorial and the Jefferson Memorial in Washington, D.C., during the Cherry Blossom Festival.

The infrared filter I used for this photograph is the Singh-Ray I-Ray 830, which completely blocks visible and ultraviolet light, letting through only infrared. I also have an I-Ray 690 that lets in a little more light, has a bit less of the pure infrared look, and allows for shorter exposure times.


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Sunflowers at McKee Beshers Wildlife Management Area - 2015 by Todd Henson

There's always something to smile about, even when surrounded by a field of drooping sunflowers.

There were a large number of bees and other insects feeding on the sunflowers.

Every year the folks who manage the McKee Beshers Wildlife Management Area in Maryland plant fields of sunflowers for some of the local wildlife. This makes for a perfect photographic opportunity. Unfortunately, this year I think we showed up about a week later than we should have for peak bloom. Most of the field we visited was well past peak, with rows and rows of drooping, half eaten sunflowers. But we'd made the trip so we made the best of it. Despite the state of the sunflowers I had a great time. One thing I would do differently is to bring bug spray, this place can be full of biting insects. A good pair of water resistant boots might also be a good idea if there's been any rain, something we've had plenty of this year.

Sunflower just beginning to open.

A reasonably young sunflower.

Getting a little older.

A cooperative Blue Dasher dragonfly.

This photograph of a Blue Dasher is available for purchase as wall art or on a variety of products.

The majority of the field was past peak, but there were still a few standout sunflowers scattered around, and some that hadn't even opened yet. It was interesting to see the variety, though it did take a little walking to find young plants. Insects of all kinds, such as bees, were feeding off the sunflowers. And some insects, like dragonflies, were out hunting the other insects. There weren't as many dragonflies as you'd find in a wetlands park, but there still were quite a few. We watched and photographed a number of Blue Dashers and occasionally we found a beautiful green Common Pondhawk.

I love the green coloration of this Common Pondhawk dragonfly.

Male Goldfinch looking over the field of sunflowers.

And, of course, there were birds pulling out seeds from the older sunflowers. Goldfinch were everywhere, flying from sunflower to sunflower. They may be common, but they're beautiful birds. We were also on the lookout for Indigo Bunting. We didn't see a great number of these, but we tried to photograph the few we did see. And we saw a single Common Yellowthroat which almost seemed to be watching us, hopping from leaf to leaf, often hiding behind one before revealing itself again. I believe it was either a female or an adolescent male that hadn't yet taken on its distinctive coloration.

Male Goldfinch. This one was flying around with a female, also photographed.

Female Goldfinch. She was flying around with the male.

Indigo Bunting. These were very difficult to photograph, this was the only decent shot I made.

A Common Yellowthroat Warbler


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