I just got a promaster Digital Axillary Advanced Bend Lens which is a 58mm 0.7x advanced arise advanced bend lens as allotment of a lot of stuff. I looked for advice and or reviews about it and saw 2 altered places area bodies said that there camera could not focus with it. One was the alone analysis on amazon and I can not assume to acquisition the added afresh but it was a same complaint. I apparent some aberrant behavior. I approved it on my pentax ist-ds (dslr), with several altered lenses. With every lens, with the advanced bend absorbed to the front, I could not focus (auto focus or chiral focus) at any distance. I noticed that as the lens confused appear the beyond setting, things were advancing afterpiece to focus but at infinity, every ambit was still out of focus. I couldn't acquisition my macro tubes, but I accept 2 lenses that accept a congenital in macro arena that pushes the lens advanced about 10-12mm. One lens would not focus at all but affective it into macro approach fabricated it afterpiece (I didn't try arena with every focal ambit etc. so maybe it ability accept wIf their armpit were alive I ability analyze about the botheration aloof out of curiosity.