I've been a photographer for over two decades, and I've used a variety of cameras, from rangefinders to mirrorless digitals. But I never dared to try large format photography, intimidated by the size and complexity of these vintage cameras. That changed when I discovered the ObscuraFlex, an innovative add-on that turns large format film cameras into digital back-compatible devices. This device, designed by Toby Wilkins, a semi-retired British filmmaker, allows photographers to use their smartphones or compact cameras as digital backs, eliminating the need for film and making large format photography more accessible. The ObscuraFlex replaces the camera's ground glass focus screen with a new, proprietary screen that diffuses light more effectively, providing a smoother, crisper, and more even exposure. This screen is the 'secret sauce' that makes the ObscuraFlex more than just a lightproof box. The device is manufactured from high-quality materials and feels sturdy, with cradles for the iPhone 17 Pro and Ricoh GR IV that attach via light-tight bayonet mounts and are secured with screws. Wilkins is quick to address issues and has already made improvements to the iPhone 17 Pro cradle, demonstrating his commitment to delivering a good product. The ObscuraFlex is a wonderful tool for photographers who want to learn to use a large format camera, as well as for experts who want the convenience of digital. While it presents a higher degree of difficulty than 35mm or medium format, it allows photographers to make mistakes without spending money on film and processing. The results are worth the effort, with a 4-by-5-inch image area that captures scenes with a unique look that 35mm doesn't quite match. The 'secret sauce' focus screen adds texture to scenes, and the characterful bokeh drawn by vintage lenses gives the images an analog feel. However, the kit is best used in sunlight or brightly lit interiors due to the dim maximum apertures of large format lenses and the relatively dim focusing screen. Overall, the ObscuraFlex is a fascinating device that opens up new possibilities for photographers, allowing them to explore the world of large format photography without the intimidation factor.