PRODUCT DESCRIPTION 
Optics
9 elements in 8 groups.
Diaphragm
It has a seven-bladed diaphragm that stops down to f/32 at infinity.
Close Focus
1:1.
1 foot.
0.314 meters
314 mm.
Working Distance
5-1/4".
133 mm.
 
Filter Thread
The 52mm filter thread is solid metal. 
Hood
There is a second 62mm thread at the focusing ring. This is where you mount the hood. The lens effectively pops out of the hood as one focuses closer, which is when the hood would tend to get in the way. 
Weight
19.837 oz. (562.4g)
Product ($499)
SN: ***9698/ ***6486
Condition: Excellent
Warranty: 2 weeks shop warranty, covering manufactural defects 
What You Will Get 
- Front Cap
- Rear Cap
Product ($549)
SN: ***5575
Condition: Like New
Warranty: 2 weeks shop warranty, covering manufactural defects 
What You Will Get 
- Front Cap
- Rear Cap
Product ($599)
SN: ***8226
Condition: Like New
Warranty: 2 weeks shop warranty, covering manufactural defects 
What You Will Get 
- Front Cap
- Rear Cap