Important Tips: 1) This is a manual focus lens with no autofocus. Only works in M mode. 2) If the image is blurred, adjust the focus ring of the lens to operate the tripod and stabilize the image until the picture is clearly visible.Ideal for use with timer remote 3) If the image becomes dark or dark, please adjust the shutter speed and set the shutter speed low until the picture is normal for example if the picture is dark in 1/200 seconds, 1/100 second, 1/60 seconds until the picture is bright) is normal). 4) If your camera lens says "no lens attached" or the camera shutter is cut out, this is not an issue.Dont worry. Set the M (Manual Focus) mode with your camera. 5) Next, set the camera menu: "Remove shutter without using lens" to operate the lens normally. If you do not know how to set this menu, do the following: 1) Set the "Unlock Lensless Release" option in the camera menu to "Enable". 2) Set the Shutter Lock option on camera menu: No lens

Introduction:

The JINTU HD 420-800mm preset telephoto lens is not only a computer optics but also uses the latest optical multi-coating technology. This includes a JINTU 2X Teleconverter which effectively doubles the zoom and converts this lens to 420-1600mm super telephoto with a new JINTU 2X teleconverter! The multi-layer coating process ensures virtually flicker-free photos even in backlight conditions, providing crisp, high-contrast pictures.

This is the best choice for photographers who want to minimize the cost of equipment during super telephoto shooting.