2X(1. There are two types of aperture: linked and non linked, which have an effect on metering for some models; If the original leather cavity can be used for aperture linkage, but the price is high;
2. For AF body and AF lens, when the magnification is relatively high, due to insufficient light intake, even with AF transmission mechanism, AF is often sluggish and ineffective;
3. When focusing, if the magnification is determined, coarse focusing can be achieved by moving the body, and fine adjustment can be made to the focusing ring; When focusing, the aperture should be fully opened, and when , the aperture should be manually adjusted;
4. The magnification can be adjusted to achieve a ratio of 1:1 or higher; Adjustable within a certain range;
5. There is a significant field curvature phenomenon when using a large aperture, and the effect of shrinking the aperture is not very obvious; If there is no metering, exposure compensation should be applied, and the compensation coefficient should be calculated according to (1+M) 2; The imaging quality is only related to the lens.

For lens or body Cameras
Telescopic size (mm): 20~140mm
Focusing method: built-in ruler on the moving track
Other features: remake stand jack, 1/4inch tripod hole
Volume (mm) : WxHxL 70 x 110 x 160
Weight (g) : about 224.9g
Specifications: B: Compatible with for (EF-mount)
Color: Black
Material: Plastic+Aluminum Alloy

Package Contents:
1 * Macro lens adapter)