Instruction: Using the product's title, description, features, price, and brand, identify and retrieve the values associated with a specified set of target attributes. Output the extracted values along with their respective sources (e.g., title or feature) indicating where each value was found.

Input:
Product title: Vanguard Alta+ 255CO 4-Section Carbon Fiber Tripod with 2-way Video & Bird-watching Panhead
Product description: The Alta+ 255CO from Vanguard is a carbon fiber tripod leg and panhead set that can hold a maximum load of 8.8 lbs. Its total weight is only 3.68 lbs. Some of its other features are: dust and waterproof leg locks, anti-shock ring to prevent damage to your camera, and large foam grips for all-weather use. It is perfect for macro photography and its rubber feet can be retracted to expose spikes for rough terrain. In addition, the legs can be adjusted individually to three different angles to better stabilize itself on uneven ground.
Product feature: Compact carbon fiber tripod legs with 2-way video panhead and shoulder strap, 25 millimeter diameter, 4-section legs, Collapses to 21 1/8 inches, Expands to 57 1/8 inches, Stone bag hook on center column
Product brand: Vanguard
Target attributes: Head Type
Answer: attribute: head type
value: panhead
source: product description
attribute: head type
value: panhead
source: product feature
attribute: head type
value: panhead
source: product title