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Message: <blockquote data-quote="arran" data-source="post: 3296100" data-attributes="member: 11246">Piergiovanni,I fully agree with the high quality optics of the kowaI have the 883 and the atx myself and use both in the field , the kowa is just sharper and gives more detailSame for the prominar 10,5x44 :best sharpness above all other el , sf and hd plus.I could use the sf quite intensively during the last weeks and must admit it to be a stunning bin , especially , the balance and focus drive are a pro, the CA sharpness is also better than the EL ( i compared 3 times SF with EL of my friends and they all agreed on the better sharpness)I did several tests with 10x42 hd plus compared with the sf and el and , sorry to say , but , leica is just underperforming the others , especially , much more chromatic aberration and less transmission.i tested 3 hd plus bins , also the one I have in my collection , and , although I love leica for its robustness and compactness , we all had the impression that the sharpness was inferior to the other alfa's.Just an honest experience the last 4 weeksI also had the occasion to test a new 10x50 el which underperformed in sharpness compared with a 10x42 in the same conditions.I was a bit confused , perhaps sample variation explains this ?The focus drive of the new el has much improved.</blockquote>