This is a very rare and niche offering: two 34mm color filters for Waltz Summar lenses – one for floodlights and one for flash. Waltz was a company that, decades ago, produced niche accessories for cameras like Leica. The original box and case are marked "for SUMMAR (Summar) 34∮". General strobes began to be used around the 1970s. Before that, photographers used flashbulbs and flood lamps in studios. Daylight film requires color correction when shooting with flashbulbs (3500-4000 Kelvin) or flood lamps (3000-3200 Kelvin) in low-light situations, as sunlight is around 6000 Kelvin. These are color filters for that purpose. In modern digital photography, color temperature is automatically corrected, so most people are probably unfamiliar with these. However, understanding this is part of deepening your knowledge of photography. The number of people using film cameras and photography is increasing again. Collecting accessories like these after gaining knowledge is also a great way to learn. For Leica enthusiasts, collecting items with the lens name "Summar" printed on them is also enjoyable. These are not items you find easily. This is a rare item I acquired when I owned a Summar lens. They can be attached to lenses with a 34mm filter diameter. An instruction manual is also included, so you should understand how to use them. The condition is as follows: the original box shows signs of aging, but the filters and glass are very clean. The craftsmanship is excellent, embodying Japanese technology. These are extremely rare and in superb condition. Leica lovers, please consider this opportunity. Not only Leica fans, but also Nikon and Hasselblad fans, how about it?