Today was a good day, the local camera shop had some Marumi diopters (close-up filters) in stock. So I could not let a set stay in the shop, no, I just had to adopt them :-)
The image below is a quick snap of the Tamron 18-270mm VC PZD with a +4 diopter fitted. The shot was taken without a tripod. Note that the center part of the dahlia is less than 2cm in diameter. I cannot wait to see what this lens can achieve at +7 (+1, +2 and +4 stacked). Although I am pretty sure I will need a tripod at that "magnification".
Canon 600D, Tamron 18-270mm f3.5-6.3 Di II VC PZD. Focal length 200mm, Exposure 1/100sec at f14, ISO 100, Focus manual, VC on, Flash none, Filter UV and +4 diopter stacked.