This sketch depicts the information I had - the relative sun angle above the horizon (57.5 degrees), my calculated distance from where I would stand along the Tidal Basin to the Jefferson Memorial (1,200 ft) and the height of the Jefferson Memorial (129 ft). From there, I needed to calculate the height of the sun over the memorial.
It's been awhile since I did geometry, but Google is a great resource for those of us who have forgotten how to do math! I calculated a height of 1,754 ft from the top of the monument to the sun, and my sister, who also happens to be a high school math teacher, confirmed my work. Phew.
After putting down my calculator, it was clear I would have to shoot this as a composite - each element would be a separate image and I would merge them all in Photoshop to create the product I envisioned.
With my plan in hand, it was time to get the equipment needed to create my image. Through my math and mental deconstruction of the final image I wanted, I determined there were two different elements I would need to photograph: 1) The Jefferson Memorial and 2) The stages of the solar eclipse.
Those two elements would require completely different equipment, so let's look at each one in turn:
The Jefferson Memorial
Normally, this is a very easy photograph. Point camera at memorial and click, right? Not so fast.... I am taking this photograph at 2:45pm remember. The sky will be a light blue, there will be harsh light and no bright colors. A yellow sun on a baby blue sky will look....out of place. The solar eclipse is also going to darken the sky, so it would be more appropriate to depict the solar elements on a darker sky. But it's still 2:45pm.
I solved this problem with the help of several neutral density filters, which allowed me to darken the sky and create the impression that it was closer to dusk than it really was. Normally I wouldn't employ this tactic during a mid-day shot.... I would just wait until dusk (no filter replaces the real thing), but I felt like this was an acceptable time to use the filters.
I decided that I would get my shot of the Jefferson Memorial before the solar eclipse show started so that I could be totally focused on the sun during the eclipse.
To get the photograph of the memorial, I used the following equipment:
Leica SL Type 601
Leica 24-90mm Vario-Elmar lens
Acratech ballhead and leveling base
Several stacked neutral density filters and a polarizing filter
The Solar Eclipse
The images of the solar eclipse were the ones I was more nervous about getting correct; I have never shot directly into the sun during mid-day, so I needed to get smart in doing so! Thankfully there is no shortage of websites from astrophotographers who explain their techniques!
The longer the focal length, the better. I have a Canon 400mm f/2.8 lens that has a modified Leica R mount that I got to photograph wildlife with, and figured that would be a perfect choice. Even at 400mm, the sun would be fairly small against the sensor - this really is a time for big glass to shine. So I got a 2x teleconverter - which made this lens the equivalent of an 800mm monster! Normally the teleconverter offers a major loss in light reduction, but I knew that wouldn't be an issue when shooting straight into the sun!
The next thing I needed was a solar filter for my lens to protect it and the camera from the harmful sun. The lens is over 6 inches in diameter, so my best solution was to use a piece of solar film and cut my own filter.
I found a piece of solar film on Amazon and used the shipping box and some gaffers tape to engineer a removable holder for the film to sit in front of the lens.
The following equipment was used for each of the solar shots: