Lens Terms?

13 years 6 months ago #14516 by JennyPenny
I see all of the following...
Sigma lenses-

Nikon lenses-

What does it mean?

13 years 6 months ago #14586 by Joves
ED= Extra-low Dispersion Glass It is used to keep the red and blues in focus.
IF= Internal Focus What IF does is keeps the lens from moving forward and back to focus, there are small menses inside that shift to aquire focus.
HSM= Hyper-Sonic Motor Which is the name for their lenses focusing motor.
APO=Apochromatic lens An apochromatic lens is a lens system corrects through using different glas types to get rid of chromatic abberations, which look like a rainbow on photos. You control the fringing by grinding the glass at a given curvature on Crown, Flint and other thypes of glass because they all refract light differently.
DG and DC= Lenses specially made for digital. It is merely their designation for them. The DGs are for Full Frame cameras the D3,700 and so on.
Dl-M I havent seen so Im not sure.

13 years 6 months ago #14634 by Yasko
I just looked it up, "EX" is Sigma's acronym for "Excellence" to denote their high-end line, while "DL" is their acronym for "Deluxe" which denotes their low-end lenses. Don't know what that dash and letter "M" stands for though.




  • Facebook

    817,251 / Likes

  • Twitter

    241,000 / Followers

  • Google+

    1,620,816 / Followers

Latest Reviews

I’ve been testing the Vanguard VEO 5 264CB-160S for several weeks now, and I have to say that my first impressions are nothing but good. Vanguard has knocked it out of the park yet again!

Jul 01, 2024

The Fujifilm X-H2s is Fuji’s flagship hybrid APS-C mirrorless camera. It launched in the summer of 2022 and has been impressing photographers and videographers alike ever since!

Jun 17, 2024

The Sony a9 III is a powerhouse professional-grade camera. The question is, should it be the next item in your camera bag? Find out if it’s worth the money in this comprehensive review!

Jun 09, 2024

The Hasselblad 907X 50C certainly isn’t the camera for everyone. However, this medium-format system is ideal for many professional photographers (and videographers!)

Jun 04, 2024

Latest Articles

The Canon EOS R5 Mark II has been unveiled, but it has a hefty price tag. If it’s out of your budget, the original Canon EOS R5 is a fantastic option. Learn more about it in this guide!

Jul 18, 2024

You need to try unique newborn photography ideas from time to time to keep your inspiration levels up. With the ideas in this guide, you can do just that!

Jul 17, 2024

What is the best landscape lens for photography - a prime or a zoom? The answer is a little murky, as it depends on the specific situation. Learn more about these lenses in this detailed guide!

Jul 16, 2024

Lightning photography is a tricky beast, but with the right tips, tricks, and tools, you can make the most of the next storm that rolls through. Learn some essential techniques in this guide!

Jul 16, 2024

Concert photography is a tricky beast, and presents challenges like fast-moving action, low lighting, and considerations for other concertgoers. Learn how to get better results in this guide!

Jul 07, 2024

Black and white nature photography is a fun, yet challenging pursuit that allows you to focus viewers’ attention on the textures and patterns of nature. The result? A gorgeous stripped-down representation of nature.

Jul 07, 2024

The Vanguard Alta Sky 42 is a brand-new camera backpack that’s compact and affordable, yet holds an astonishing amount of gear. Read up on my first impressions here!

Jul 07, 2024

The Canon EOS 7D Mark II might not have the biggest sensor or the best video capabilities, but its mix of photography and video specs and a budget price make it well worth your consideration.

Jul 07, 2024