Fieldscope Eyepieces SEP series for PROSTAFF 5

	SEP-25		SEP-38W		SEP-20-60
	with PROSTAFF 5 60/60-A	with PROSTAFF 5 82/82-A	with PROSTAFF 5 60/60-A	with PROSTAFF 5 82/82-A	with PROSTAFF 5 60/60-A	with PROSTAFF 5 82/82-A
Magnification (x)	20	25	30	38	16-48	20-60
Real field of view(°)	2.8	2.2	2.3	1.8	2.6 (at 16x)	2.1 (at 20x)
Apparent field of view (°)*	51.3		62.1		39.9 (at 16x)	39.9 (at 20x)
Field of view at 1,000m (m) (approx.)	48	38	40	31	45 (at 16x)	36 (at 20x)
Exit pupil (mm)	3.0	3.3	2.0	2.2	3.8 (at 16x)	4.1 (at 20x)
Relative brightness	9.0	10.9	4.0	4.8	14.4 (at 16x)	16.8 (at 20x)
Eye relief (mm)	17.6		19.0		16.9 (at 16x)	16.9 (at 20x)
Weight (g)	135		185		225

*Nikon's calculation method for values of apparent field of view is based on the ISO 14132-1:2002 standard. For details, click here.