Description:Split-field filters are filters composed of two half's. half is a close-up lens, the other half is empty. Both parts of the lens can be in focus at the same time or you can leave part out of focus for a special effect, will let you experiment with different combination's and obtain some very interesting photos.Creates Blurry Refraction, while leaving middle open for focus on subjectDifferent apertures can be transferred through the adapter ring, and different effects under different focal lengths of aperture (35mm-85mm) are recommendedMade of high quality solid Optical Glass material, provide the great value of clarity and transparency.Great for use in film making where you want to have a close up subject in focus as well as subjects far away.Size Chart:Type: Camera FilterFilter diamater:77mm/3.0 inchPackage Includes:1x Split Diopter Filter 1x Filter Bag1x Microfiber Clean ClothNote:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.