Talk:1855: Telephoto

Notice the "webcam" placed on the front element, and the cable running through the extenders and converters back to the camera body? The extenders and converters are only being used for mechanical support, to place the webcam near the bird, and not optically. 162.158.79.125 15:16, 26 June 2017 (UTC)
I understood it to be that the webcam was mounted on the side of the extender, allowing for a live stream in addition to the up close picture being taken. Raj-a-Kiit (talk) 16:25, 26 June 2017 (UTC)

That's how I took it, but the webcam and wires are drawn in a lighter line, possibly insinuating that the webcam and wires are inside the extenders and converters. OldCorps (talk) 16:53, 26 June 2017 (UTC)

It depends on how tall Randall actually is, but using an average of 1.7 m for humans, that camera is about 32 feet, 4 inches long (it's about 5.8 times the length of Cueball). OldCorps (talk) 17:04, 26 June 2017 (UTC)

Incorrect definition of telephoto

A telephoto lens is actually a lens of which the physical length is shorter than the nominal focal length. For instance, I have a 90mm Leica lens that is about 67mm long; this is accomplished through the optical design. A long-focus or long lens is a lens with a comparatively long focal length: on 35mm cameras, this is generally any lens 85mm and up. They are sometimes called portrait lenses. A zoom lens is one with a variable focal length, e.g., 70mm – 140mm. It is not necessarily a long lens.

The distinction is especially important to large format photographers, and the conflation of the terms is common among lay speakers.

Randall has conflated a telephoto lens with a long lens, as does the current explanation.

See http://camera-wiki.org/wiki/Telephoto#Long-focus_.28Telephoto.29 for on the topic. Seezee (talk) 18:21, 26 June 2017 (UTC)