WHAT HAPPENS TO DOF WHEN YOUR SUBJECT IS CLOSE TO THE CAMERA?
Pros and Cons of long telephoto lenses – (continuation)

FIRST IMAGE:
1/1250sec – f/4 – ISO 640 – Nikon D5 – Nikon 600mm Lens
FOCUS DISTANCE: 10 meters

Having the focal plane a short distance from the image plane renders shallow DOF. Conversely, the farther the image plane i…Read More

SECOND IMAGE:
1/400 sec – f/4 – ISO 640 – Nikon D5 – Nikon 600mm Lens
FOCUS DISTANCE: 8,91 METERS

For the same focal length and same aperture setting, getting physically closer to the subject will give shallower DOF and more background bokeh. In other words, less of your subject will be sharp in focus.

Pros and Cons of long telephoto lenses – (continuation)
FIRST IMAGE – (Watch in full display for max quality)

WHY IS DOF MINIMISED AT THE MAXIMUM FOCAL LENGTH OF A ZOOM/LONG LENS?

Field depth depends on four factors: aperture size, lens focal length, frame (sensor) size, and focal distance (distance to subject).

Wildlife and bird p…Read More

Pros and Cons of long telephoto lenses – (continuation)
SECOND IMAGE – (Watch in full display for max quality)

In this image, I have cropped the image in Lightroom to show that the subject is still sharply focused despite the extremely shallow DOF. To achieve this, it is essential to understand the impact of the chosen f/stop, the distance from…Read More

I get many questions regarding the Pros and Cons of long telephoto lenses. To answer a few of them, please join us in these weekly discussions, where I will address as many questions from students as
possible.

DO LONG LENSES NEED MORE LIGHT?
The longer your lens is, the less light hits the sensor for a given aperture opening size. Your field…Read More