Here is a brand new item from OP/TECH USA. There is no better way to temporarily protect your expensive camera from the weather. The best part is they are very inexpensive. Don't let the price fool you, they are not cheap, just a good price. Used with a little thought and care will allow for years of faithful service.
Each pack ordered contains 2 rainsleeves.
One shipping charge regardless of how many packs you order. This listing is for one pack. If you need more then one
get them from my store by clicking here Order 1 pack for 2 rainsleeves
Order 2 packs for 4 rainsleeves, etc.
Features 
Protects your gear from dust and inclement weather
Designed for handheld use or tripod application
Unique eyepiece opening adapts to most viewfinders for viewing through the lens? not plastic!
Camera & lens controls are easily visible and operable through the RAINSLEEVE
Fits lenses measuring up to 7" (17,8 cm) in diameter & up to 18" (45,7 cm) in length
Drawstring lens opening offers easy access and a snug fit
