I have a Nikon 35-70 2.8 AF I've had for probably 25 years. The lens is in excellent cosmetic shape; however, I used it recently after not using for a few years and noticed it is very hazy. It has always been stored in a dry cool environment. Also, I just purchased a new Nikon 24-70 2.8. AF; therefore, I may not need the old 35-70 2.8, but I hate to toss it away. Is it worth having repaired?