If the rise of digital photography has made film a niche product, then Lomography LomoChrome Purple XR 100-400 ($11.90 per roll) occupies a niche within a niche. The unique color negative film is a modern take on Kodak's long discontinued Aerochrome III infrared film, which rendered green grass and foliage in rich red and purple tones. LomoChrome isn't sensitive to infrared, but instead produces its unique look through a chemical formulation that causes severe color shift in images and a dark green film base that really pushes the purple. It's a unique look that isn't appropriate for every situation, but if you're intrigued by it, it's worth trying out. The biggest issue is the price—at $11.90 a roll, it's more than twice the cost of premium color negative stocks like Kodak Ektar 100 ($5.50 per roll). And Lomography only offers it in 5, 10, or 15 roll packs, but other retailers have started to offer it as single rolls.