This barlow lens is good. Small, high built quality and yet selling at bargain price. Fully multi-coated optics provide excellent light transmission. The only issue is there is presence of slight chromatic aberation when used with high power eyepiece (my meade super plossl 9.7mm) but for the price I'll never say no this product.
Pros: Clear image, multi-coated optics
Cons: Slight chromatic aberation
This review was written in the old system and had content requirements that are different than reviews written today.