|T-Stop||Min Focus||Mount||Weight||Length||Front Dia||Factory Ø|
|Macro/micro Package includes 3 Objectives|
|Micro HM||variable||< 1/2"||PL/EF/Nikon/E||11.7 oz||8.68"|
|Macro||variable||< 1/2"||PL/EF/Nikon/E||10.5 oz||6.06"|
|SFX||variable||< 1/2"||PL/EF/Nikon/E||13.6 oz||9.645"|
Operation. Using the TS-160 is as natural as "stepping close to get a better look." It is essential to understand that the Variable Iris must be used to monitor image quality.
Because the TS-160 is a microscope and not a “taking” or typical “macro” lens, it’s Variable Iris is analogous to that of a regular laboratory microscope’s in the condenser. Like laboratory microscopes, the are no f/stops to be found-they are not relevant to using the TS-160. The purpose of the Variable Iris is not to control exposure, but to control contrast, resolution and residual aberrations.
Setting the Variable Iris. The TS-160’s internal focusing system allows it to be set for optimal imagery by means of the Variable Iris. Within a reasonable tolerance, microscopes have only one theoretically proper point where contrast and resolution are optimized relative to aperture and working distance. Fortunately, this point is easily seen when a sudden “jump” in contrast happens as the Iris is closed down.