Tamron Telephoto SP AF 90mm f/2.8 Di Macro Autofocus Lens for Canon EOS

[Salty]

90mm with full frame sensors... Not sure crop with other sensors. Works great in the bad viz of the Southern England waters ( warmer here and lots of blooms). This f 2.8 is still slow in focusing and I find that manual focus works best for me due to the low light and bad viz. A focusing light is almost always needed or a video light along with your flash works well too, but tends to show more back scatter.

http://www.pbase.com/uhear/image/127776402/original.jpg (http://www.pbase.com/uhear/image/127776402/original)
http://www.pbase.com/uhear/image/127775438/original.jpg (http://www.pbase.com/uhear/image/127775438/original)
http://www.pbase.com/uhear/image/127746264/original.jpg (http://www.pbase.com/uhear/image/127746264/original)
http://www.pbase.com/uhear/image/127740390/original.jpg (http://www.pbase.com/uhear/image/127740390/original)
http://www.pbase.com/uhear/image/127776631/original.jpg (http://www.pbase.com/uhear/image/127776631/original)

[Jonathan Bird]

I see you have a lobster over there which is very similar to our Homarus americanus.

[Salty]

I see you have a lobster over there which is very similar to our Homarus americanus.

Sorry,.... should have said these were taken in Rhode Island.