Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: Ikon Wide Angle 35mm f/2.8 C Biogon T* ZM Manual Focus Lens in Silver
Product description: The Zeiss 35mm f28 C Biogon T ZM Lens is a compact wide angle lens designed for full integration with TTL-exposure metering It has a minimum focusing distance of 23 07 m and offers ultra-sharp resolving power and next to zero distortion The C in its ...
Product feature: Front & Rear Lens Caps
Product price: $59.15
Product brand: Zeiss
Target attributes: Type
Answer: attribute: type
value: 35mm
source: product description
attribute: type
value: 35mm
source: product title