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Message: <blockquote data-quote="DenisG" data-source="post: 851897" data-attributes="member: 7041">The Tcon17 (in my case the B300 predecessor) works ok on the front of a number of my dslr lenses with little to no light loss. It's a big lump!. While one of the most popular and best telecons out there it's not tack sharp in dslr terms. On the front of my 90mm Macro lens it does the job but because the Macro unit is so sharp on it's own you know when the Tcon is fitted. On many other less sharp lenses it's OK. There is no real comparison to a true dslr telecon though, light loss or not. Mine is almost a permanent fixture to a Minolta A1 and photos can be seen on my gallery. Filename beginning 'Pict' will almost certainly have it fitted except in macro pics. Camera choice would suggest at least waiting for the initial reviews and posted pics from the new Sony H9 due any day/week now to see how the new 8mp sensor and 15x Carl Zeiss 31-465 lens performs but the FZ's are very, very good. Denis.</blockquote>