• Home >
  • News
  •  > Sigma to Release Two MTF Charts for Measurement of Lenses

Sigma to Release Two MTF Charts for Measurement of Lenses

Sigma Logo
From Sigma:
 
Sigma Corporation of America to Release Two MTF Charts for Measurement of Lenses
 
Company releases the data of Geometric and Diffraction MTF charts for Global Vision Lenses
 
RONKONKOMA, N.Y., — February 3, 2014 – Sigma Corporation of America, a leading researcher, developer, manufacturer and service provider of some of the world's most impressive lines of lenses, cameras and flashes, today announced that the company will now release a Geometrical MTF (Modulation Transfer Function) chart in addition to a Diffraction MTF chart when measuring the performance of all new Global Vision lenses.
 
MTF charts are important because they help photographers better understand the optical quality of lenses. Sigma has traditionally released Diffraction MTF data because it takes the diffraction quality of light into consideration, which can dramatically affect the data outcome. Diffracted light exists at every aperture, giving photographers a more accurate measurement of how the lens will perform in real life. Although Geometric MTF data is easier to measure and calculate since it does not consider the diffraction quality of light, it tends to show higher values in the graph and less defined results.
 
“As a family-owned organization, we hold ourselves and the products we design to a very high standard,” said Mark Amir-Hamzeh, president of Sigma Corporation of America. “Our customer’s expect high quality products and by sharing both MTF charts for all our new lenses, we are able to help guide them in making the most informed purchase decisions based on how our lenses will perform in actual photography situations.”
 
As a leader in technology and innovation, Sigma Corporation is committed to showing the true value and quality standards of all Sigma Global Vision lenses. Every lens is tested with Sigma’s proprietary modulation transfer function (MTF) “A1” measuring system before being shipped from the factory in Japan. By making both MTF charts available, Sigma is providing its customers with accurate measurements of its lenses and giving photographers a chance to see the full potential of Sigma’s lenses.
 
B&H carries Sigma lenses.
Posted: 2/3/2014 1:44:30 PM CT   Posted By: Sean
Category: Sigma News
comments powered by Disqus

Please support this site and my family by using the links provided throughout the site to make your purchases
Using this link to make your B&H purchase supports this site and my family
Using this link to make your purchase supports this site and my family
Using this link to make your purchase supports this site and my family
Using this link to place your Beach Camera order supports this site.
Using this link to place your Think Tank Photo order supports this site. Should your order total more than $50.00, Think Tank Photo will send you a free gift with your order if this link is used
Using this link to place your MindShift Gear order supports this site.
Canon Refurbished:
B&H Photo
Adorama
Canon Store (DSLRs)
Canon Store (Lenses & Flashes)
 
Fund New Gear: Sell the Used:
Sell Used Gear at B&H Photo
(learn more)
Support this site by ordering a Lensbaby!

Help | Contact Us | Support Us | Terms of Use | © 2003-2014 The Digital Picture, LLC | Bryan CarnathanPowered By Christ!