I'm sure that you're right. Maybe someone who has the razor could give photo analysis a try. My digital camera is kind of old, but it's good enough. The hardest part is getting everything set up for multiple shots. There's a lot to it that I haven't written about, and my method gets more refined each time I do it. I most recently added a close secondary light source (from a bright little flashlight) that I hold at the right place and angle to increase contrast and illuminate the blade edge while I snap pictures with my other hand. Also, I'm now getting the best shot from both sides and edges, which makes four shots. I've done this for the EJ Kelvin. I'll analyze all four photos and average the results soon.