Telephoto lens magnification compared to Spotting scopes

3 years 4 months ago #707111 by ZurabIgnacij
Hello, hope to find useful info here. Coming from a different field, other than photography, I am used to optical magnification being expressed in Times-zoomed. Some spotting scopes have fixed 30x magnification, for instance. Sticking an iPhone at the end of spotting scope is not the best solution, so I am putting together a Canon R6 + 100-500 RF lens set and possible 2x magnifier.
Requirement is to take pics of recognizable facial features at 150m and more in less than ideal conditions. This is more of investigative than artistic work.
My question is: how much magnification is 500mm lens compared to Times-magnified on optics like spotting scopes? Thank you!

P.S. Don't tell me times-magnified is ratio of lowest and highest zoom, because it's not.


,
3 years 4 months ago #707141 by Nikon Shooter


Given that a 50 mm lens is 1x, a 100mm lens is 2x, 200mm lens is 4x, etc.
To get the optics magnification factor, simply divide the focal length of the
lens by 50. So, using the formula, a 400mm lens to about the magnification
of 8x and a 500mm lens to roughly a 10x.

Light is free… capturing it is not!
Photo Comments
The following user(s) said Thank You: ZurabIgnacij
,
3 years 4 months ago #707142 by Nikon Shooter
ADDENDUM

Scopes achieve greater magnifications through the eyepiece
but there are less desirable features for photography.

Light is free… capturing it is not!
Photo Comments
,
1 year 8 months ago #743833 by uscameloptics
For a full-frame camera, 50mm is approximately equal to the focal length of the human eye, and we can calculate the corresponding multiples of lenses with different focal lengths. For example, a 400mm lens is equivalent to 8 times the telescope effect, and 800mm is 16 times. For cameras of other formats, you need to multiply by the corresponding coefficient. So, M43 frame, the factor is 500mm lens can be equivalent to the effect of 10 times telescope.

This is the way things in the world are: no matter how high the mountain is, there are birds flying over; no matter how dense the net is, there are also fish that burrow through.
uscameloptics.com

,

817.3K

241K

  • Facebook

    817,251 / Likes

  • Twitter

    241,000 / Followers

  • Google+

    1,620,816 / Followers

Latest Reviews

The Olympus Pen E-P7 is an affordable micro four thirds mirrorless camera with 4K video capabilities, a 20.3MP sensor, and 121 focus points, making it a solid entry-level camera for beginners.

May 13, 2024

The Panasonic G9 II is a 25.2-megapixel micro four thirds camera with numerous features that make it punch out of its weight class, like 779 AF points, 5.8K video, and weather sealing.

May 10, 2024

The Fujifilm XT5 is a 40MP mirrorless camera capable of 6.2K video at 30p. With those specs, it’s an ideal choice for photographers needing a camera to pull double duty for imaging and video.

Apr 25, 2024

The Canon EOS R100 is an entry-level mirrorless camera introduced in 2023. But just because it’s an entry-level camera doesn’t mean it’s a bare-bones camera. Find out why in this review!

Apr 22, 2024

Latest Articles

Tree photography is an interesting genre of landscapes that use the size, shape, and texture of trees as the primary element of interest. With these quick tips, you can master the art of photographing trees!

May 24, 2024

Auto white balance is a camera setting that adjusts the color temperature of your images automatically. It often works well, but you should know a few tips to fix problems it might cause, too.

May 24, 2024

The Canon EOS 5D Mark III might be more than a decade old, but it still has the chops to be a quality camera for photographers in 2024.

May 23, 2024

Starting a photography business can be a daunting task. There is a lot to do, and many mistakes can be made. This guide helps you minimize mistakes and maximize your success!

May 21, 2024

The Canon 6D Mark II might be an older DSLR, but that doesn’t mean it isn’t a good option for 2024. In fact, this budget-friendly camera is a powerhouse for stills and videos.

May 21, 2024

In this guide to the bokeh effect, you’ll learn what bokeh is and the factors involved in creating it. You’ll also explore some beautiful example images to spark your creativity with bokeh!

May 16, 2024

Upgrade your kit in 2024 with the best intermediate camera on the market! The question is, what camera fits the bill? We’ve got three top options for you to choose from in this buyer’s guide.

May 15, 2024

The best photography jobs right now are a mix of tried-and-true gigs like wedding photography and new jobs highlighting AI’s capabilities, travel, and videography.

May 15, 2024