The new MTF Comparison Tool
has just received 4 additional chart types. Joining the Average and Variance charts are the 2D Map
and 3D Isometric charts
in 10 lp/mm and 30 lp/mm formats.
Among the additional lenses loaded into the tool are the 24-70mm f/2.8 zooms
(Canon, Nikon and Sigma). Remember that CA is generally more prevalent in zoom lenses (especially in the maximum focal length extents) and that CA is a significant factor in corner MTF performance (and is generally an easy-to-correct aberration). If you see chart lines/colors showing decreasing MTF measurements toward the corners (right side or periphery), CA may be at least some of the cause. Reference the Lens Image Quality Tool
to see if CA is a significant component of a dropping MTF chart measurement for a specific lens.
One of the zoom lens additions is the new Sigma 24-35mm f/2 DG HSM Art Lens
. Of note is that, while the tool says "Average" for the chart type, only one copy of this lens was available for MTF testing. The test results will be updated (and the other chart types added) when a larger sample size is available. B&H
has the Sigma 24-35mm f/2 DG HSM Art Lens
There are enough results in the MTF tool to entertain for hours. Here is a comparison that I find interesting
. While these are not equivalent apertures (one stop apart), B&H
has the Zeiss 135mm f/2 Lens
in stock with a $300 instant rebate bringing the price down to far less than half that of an Otus.
Be sure to share the MTF tool with your friends!
From Nikon: Nikon’s AF-S NIKKOR 300mm f/4E PF ED VR Lens and the SB-500 AF Speedlight Win in Their Respective Categories
MELVILLE, NY – Professional Photographer Magazine has selected the Nikon AF-S NIKKOR 300mm f/4E PF ED VR lens and SB-500 Speedlight as the pros’ top choice in the Multi-Functions Lens and Speedlight/Hot Shoe Flash categories, respectively for the 2015 Hot One Awards.
The annual Hot One Awards honor the hottest products for professional photographers. From hundreds of entries, a panel of judges—who are all professional photographers—name their top choice among dozens of photography products and services. The awards are highlighted in the August issue of Professional Photographer.
This year, judges for the 16th annual Hot One Awards chose the compact and lightweight AF-S NIKKOR 300mm f/4E PF ED VR lens as the top Multi-Purpose Lens. The judges also chose the versatile SB-500 AF Speedlight as the top Speedlight/Hot Shoe Flash in the industry.
“Nikon seeks to give professional photographers the best equipment for the job, and it is an honor to be recognized once again by Professional Photographer Magazine with these awards,” said Masahiro Horie, Director of Marketing and Planning.
“The winners of the 2015 Hot One Awards represent the pros’ choice of the year’s photographic products,” says Professional Photographer Senior Editor Joan Sherwood. “The Hot Ones recognize excellence in professional products as judged by the pros who use them. As talented as photographers can be, they still have to rely on their gear, software, professional services, and the products they sell. Their choices for the Hot Ones give our readers a list of worthy winners to consider for themselves.”
The Hot One Awards have provided Professional Photographer readers with a resource of the newest, most innovative products available in a variety of price ranges. Readers are treated to a resource compiled by independent, practicing professional photographers, selected for their expertise and knowledge. This year’s independent panel of 35 judges voted on products that ranged from cameras and lenses to albums and displays. They made their selections based on overall quality, innovation, design, performance, and value for the price.
For more than 100 years, Professional Photographer, the official magazine of Professional Photographers of America, has helped readers advance careers in the photographic industry. No other magazine offers a more influential presentation of the people, trends, products, and photographs defining the portrait, wedding, and commercial photography landscapes.
B&H carries the Nikon AF-S NIKKOR 300mm f/4E PF ED VR Lens
and the SB-500 AF Speedlight Flash
(via GetItDigital) has the Canon EOS 6D DSLR Camera
available for $1,099.00 with free shipping. Compare at $1,399.00 after $300.00 instant savings. Note:
This is likely a grey market item and not technically eligible for a Canon USA warranty.
The blazingly fast, 12 frames-per-second beast – the EOS 1D-X
) – can now be had for an MSRP of only $4,599.00 from authorized (warranty included) dealers like B&H
after a $700.00 instant savings.
The new lower-than-ever MSRP may indicate that a replacement is on the horizon. That said, a 1D-X purchased now should still fill the needs of most sports shooters for years to come.