hi,
what is meant by Fast (f/1.8-f/2.6) ,aspheric lens design, with 10 elements in seven groups as compared to
f/ 3.0 - f/ 3.6, 11 elements in 9 groups
should higher f be better or lower? what is elements and groups?
what is meant by Fast (f/1.8-f/2.6) ,aspheric lens design, with 10 elements in seven groups as compared to
f/ 3.0 - f/ 3.6, 11 elements in 9 groups
should higher f be better or lower? what is elements and groups?