So we want that to be around two and a half inches thick. The first step is just simply to take your black paper and cut off a strip of paper from the side. Now I do want to say right now, before we start, none of this needs to be perfect! If you watch the video you’ll see just how ropey mine looks, but it still does the job perfectly :) Step One: You’ll need some black paper, a pair of scissors so you can cut out some shapes, and you're going to need a roll of sticky tape so you can stick the whole thing together. You're only going to need three things to create this DIY photo filter. See the final edit of the photo on 500px.This is one of those where you would be better to watch the video, but if you prefer to read, I’ve listed out the steps for you below! What you’ll need to create a shaped bokeh filter: I admit the bottom photo is kind of hokey with the heart shapes, but sometimes you need a bit of whimsy. The bottom photo was taken with the lens hood that had the heart-shaped diaphragm. The top photo’s bokeh is the result of the 100mm lens’ seven curved diaphragm blades. Here is an example of how diaphragm shape affects bokeh. If I cut out a star, the lights would have been star-shaped. This is because I created a heart-shaped diaphragm in front of the lens. The same Christmas lights that appeared rounded are heart-shaped. I am holding the blue lens hood with the heart-shaped cutout in front of the camera. Now look at the LiveView display on the camera. The Christmas lights are nice round balls of light in the background. Look at the top-left corner of the photo. Diaphragm shape determines the shape of the background blur. This means the the iris (or diaphragm) opening will be rounded, so the background blur will have a rounded shape. This photo was taken with a lens that has seven circular diaphragm blades. For this technique to work, the piece of paper with the cutout needs to be as close to the lens as possible.Ībove is a cool photo of the process at work. I ended up holding the hood in front of the lens. I could not fit the bokeh lens hood over the lens. Unfortunately, the 100mm lens barrel had a larger diameter. It had a narrower aperture than the 50mm, but still sufficiently wide enough to produce background blur. To get a narrower field of view, I switched to a 100mm lens. I used a remote shutter to minimize camera shake. I added a diffused light to better illuminate the flowers. To control the scene, I put the flowers on a milk crate and mounted the camera on a tripod.
Also, I needed a light to help illuminate the flowers. However, the viewing angle of the 50mm lens was too wide. I took some handheld test shots and was thrilled to see the lights actually became heart-shaped.
Luckily one of the flowers was a red rose, which would go with the hearts to complete the Valentine’s Day theme. I needed something to focus on in the foreground so the lights in the background would be blurred. I got some Christmas lights and draped them over a black cardboard tri-fold presentation display. It fit on my 50mm lens and I used a rubber band to help keep it from falling off. I cut out this disc with the heart on it, then taped it to the lens hood. You do need to use a sharp instrument to ensure clean edges. Using an X-ACTO knife, I trimmed out the heart. I then cut a long strip of the paper to act as a lens hood. I traced the circular outline of my “nifty fifty” 50mm lens then drew a heart in the center. You are supposed to use black construction paper or card stock, but all I had was some blue construction paper. If you’re going to attempt this, I recommend watching the video, as it provides a few pointers about constructing your custom bokeh lens hood. This video posted at Digital Photography School is quite good. The points of light in the background become shaped like hearts, stars, or whatever you want.Īs a refresher, I consulted this DIY Photography article. I had read about creating bokeh shapes many months ago. Somehow I settled on trying to do something with heart-shaped bokeh. I wanted to take some kind of photo for Valentine’s Day.
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