RAYNOX DCR-250 Super Macro Close Up Lens

[galmen]

Have you tried using the Raynox 250 with a 135mm or 200mm lens? That'll give you higher magnification.

I have used it with 135mm, giving it some serious vignetting which i'm not comfortable with...

 

[GRbenji]

I have used it with 135mm, giving it some serious vignetting which i'm not comfortable with...

When using with the 18-135, should be using towards the tele end. Magnification increase with increase in lens focal length for diopter.

Magnification = (focal length x diopter value)/1000

hence at 125mm, mag = (125 x 8)/1000 = 1x
and at 50mm, mag = (50 x 8)/1000 = 0.4x