Description
1.25" 6mm 8-Element eyepiece, 86 Degree Apparent Field, 12mm eye relief, eyeshield, rubber grip, Fully Multicoated, camera adaptable
Speers-Waler Series4 1.25" 6mm offers a wider 86 degree AFOV than Series3 with all the same features.
Focal length 6.1mm
Eye relief 12mm
Elements: (8)
The Series4 6mm performance:
Edge field curvature (546nM): Sagittal,-0.04mm, Tangential: 0.13mm. Edge lateral color: 0.027mm. Chromatic focal shift (420-656nM) 0.07mm.