Canon EF 300mm f4 L USM review

Lens Type: Prime
IS / VR / OS: None
Canon L Class: Yes
Min Focal length (mm): 300
Max Focal Length (mm): 300
Number of Elements: 8
Element Groups: 7
Max Aperture: 2.8
Minimum Aperture: 32
Diaphragm Blades: 8
Closest Focus Distance (m): 2.5
Maximum Magnification: 0.13
Filter Type: Screw In
Filter Diameter (mm): 77
Diameter at widest (mm): 90
Lens Length (mm): 213
Weight (g): 1165
Discontinued Model: Discontinued
Release Date: December 1991

Details

Depth of field Data

Depth-of-Field Data for EF300mm f/4L USM

[unit:m]

D	F4		5.6		8		11		16		22		32
D	ND	FD	ND	FD	ND	FD	ND	FD	ND	FD	ND	FD	ND	FD
Inf.	600.09	Inf.	439.28	Inf.	310.75	Inf.	219.93	Inf.	155.58	Inf.	110.12	Inf.	78.00	Inf.
20	19.37	20.67	19.15	20.93	18.82	21.35	18.37	21.96	17.77	22.89	16.99	24.35	15.99	26.78
10	9.84	10.16	9.79	10.22	9.70	10.32	9.58	10.46	9.42	10.66	9.20	10.96	8.91	11.41
7	6.92	7.08	6.90	7.11	6.86	7.15	6.80	7.22	6.72	7.31	6.61	7.45	6.46	7.65
5	4.96	5.04	4.95	5.05	4.93	5.07	4.90	5.11	4.86	5.15	4.80	5.22	4.72	5.31
4	3.98	4.02	3.97	4.03	3.95	4.05	3.94	4.07	3.91	4.09	3.87	4.13	3.83	4.19
3	2.99	3.01	2.98	3.02	2.98	3.03	2.97	3.04	2.95	3.05	2.93	3.07	2.90	3.10
2.5	2.49	2.51	2.49	2.51	2.48	2.52	2.48	2.52	2.47	2.53	2.45	2.55	2.44	2.57