K&F Concept Mount Adapter for Pentax K/M/A/FA/DA Lens to Sony NEX E-Mount

Features:

This adapter offers the ability to focus infinitely and boasts an elegant, clear appearance. Constructed from high-quality metal, it is both compact and durable. With high precision, it ensures a perfect fit for your camera. The diaphragm control for the lens is manually set, giving photographers more hands-on control over their settings.

Instructions for Use:

Important Notes:

1. This adapter is manual and does not contain autofocus or an aperture ring.
2. Installation should be conducted skillfully to avoid applying excessive force.
3. When attaching an APS-frame lens to a full-frame camera, be aware that vignetting may occur. Some cameras can correct this by adjusting to APSC settings.
4. Conversely, when using a full-frame lens on an APS-frame camera, you will benefit from exceptional edge-to-edge sharpness. The smaller image field will minimize lens distortion and aberration by utilizing the 'sweet spot' at the center of the larger lens’s image circle. Additionally, the focal length will be magnified by 1.6 for Canon cameras, 1.5 for Nikon and Sony, and 2.0 for Micro Four Thirds cameras.

Infinity Focus Position:

The infinity mark [∞] on the telephoto lens is designed to be slightly offset towards the positive side. This adjustment allows for fine-tuning of focus even when temperature changes cause a shift. The adjustment area is marked with an L-shaped line, so it is paramount to verify focus through the viewfinder, especially when shooting at infinity.

'No Lens Attached' Warning Message:

1. If the camera displays a message reading "lens is not properly installed," you will need to modify the settings. Navigate to 'Menu' -> 'Setup' -> 'Release w/o Lens' -> 'Enable'. Keep in mind that the exact terminology and location of options may differ depending on the camera model. If your lens lacks a manual aperture control ring, it will default to maximum aperture. To adjust the aperture without a manual control ring, remove the adapter ring and make the necessary adjustments directly on the camera.

2. For first-time use of the adapter, ensure that you set the camera to "release shutter without lens." Failing to do so may result in the camera not recognizing the lens, preventing the shutter from being released.

Quality and Precision:

Manufactured from high-quality aluminum alloy, the adapter features a well-crafted ring that fits smoothly with the camera bayonet. The lens interface includes a fine copper material, enhancing its precision and durability while minimizing wear over time.

The inclusion of a red dot mark ensures accurate alignment, making installation and removal convenient. Users will appreciate the full manual control that this adapter provides, allowing for manual focus, aperture priority, and assurance of infinity focus.

In summary, this adapter grants extensive control and versatility, making it an essential accessory for photographers seeking to maximize their lens performance while ensuring seamless installation and operation.

product information: