#Helicon focus object examples series

When focused at 500 mm the 50mm lens is 55mm away from the sensor. In practical terms, infinity means a long distance from the camera, not literally an infinite distance. For example, a 50mm lens is 50 mm away from the sensor when focused on infinity. The sensor-lens distance moves by small amounts. So, the sensor-lens distance is a bit of a fiction, but the analogy is useful. Stacking doesn't handle objects that are moving very well, usually creating multiple images in the composite photo.Ī real camera lens is more complicated than the above illustration and may have internal elements that move at different rates. An example below compares a single photo with a composite photo. The stacking program combines the sharp part of each photo to make a composite photo with much greater depth of field than is possible with a single photo.

#Helicon focus object examples series

Higher f-number increases depth of field, but this is not free, as increasing the f-number lowers resolution due to diffraction.įocus stacking creates a composite photo from a series (stack) of photos, each image in the stack focused a bit deeper into the object.

The depth of field depends on the properties of the lens and how far away the object is from the camera. The depth of field is considered the distance that the blurring is acceptable for parts of the object that are out of focus. Depth of field refers to the fact that the camera focuses at one distance and things closer or further are out focus (blurred) to a greater or lessor extent. The sensor records the image and turns it into a computer file composed of pixels or dots forming the image.

The lens focuses an image of the object of the photo on the sensor.