Originally posted by audiobomber Has anyone tried to mate a Raynox to the 01 prime?
Hi Dan,
Diopter add-ons don't do much with any of the Q Quality line (AF) lenses because of their very low native magnifications (0.05x for the 01 and 02, and 0.06 for the 06). Compare this to native mag of the kit zooms with the DA18-55 at 0.34x, the DA 50-200 at 0.24x, and the DA 55-300 at 0.28x. The Q AF lenses, even with heavy diopter magnification (like +8 for the Raynox DCR 250) only get you to something that's appropriate for medium sized flowers or butterflies, and the working distance is relatively short, so it really doesn't work for live critters. Also, most of the good add-on diopters (achromats) are optically optimized for use on much longer FL lenses (usually 70mm and up in actual FL).
Dedicated macros are really the way to go IMO. The extreme crop factor gives a 1:1 macro an apparent magnification bump of about 3.8x over APS-C. The actual magnification is 1:1, but the subject image to the cropped frame gives the impression of greater magnification. With a Pentax APS-C body, 1:1 means that a 23.7mm subject fills the frame horizontally. With the Q, 1:1 means that a 6.17mm subject fills the frame horizontally, and at the same working distance. This gives a potential for a few advantages. You can shoot the Q at longer working distances to get equivalent apparent magnification in relation to the frame as APS-C, and this greater distance gives you increased DOF and less steep angles for camera mounted flash. Of course, at minimum focusing distances, you get the increased apparent magnification in relation to the frame, but no advantage for DOF, working distance or flash angle.
Zooms with "macro" capabilities (usually up to 1:2) can give you good apparent magnification, but working distances can be short, and these lenses are usually much larger than dedicated macros, so there's a tradeoff in usability.
Scott