(Update #3) Are Sony, Olympus and Panasonic Cheating Their Customers (crop factor with ISO & aperture)?
update #3: be sure to read Tony Northrup’s comments and answers in the comment section of this post.
update #2: I think Tony Northrup is wrong, Have a look here to grasp the whole story.
update: have a look at mirrorlessrumors.com to get an alternative view of the issue. Says Ale from MR:
There are a couple of logical errors made by Tony Northrup.
First: No one cheats. All company aperture lens info are correct! The Panasonic 12-35mm f/2.8 has a f/2.8 aperture and not a f/5.6 aperture. You don’t have to make the equivalence he says has to be done! Use the Sony A7r and Sony A6000 for the same shoot. To get same result the camera automatically sets on both the same ISO and same lens aperture despite the different sensor size. Just to say that the aperture remains CONSTANT and is not relative! There is no equivalence to make on that!
Please read this why you cannot apply the aperture equivalence you mention on no other than the “depth of field” and “field of view” only:
The focal length and aperture remain constant!!!!
Second: He says Olympus, Panasonic and Sony do cheat. Nope. All companies use the same kind of measuring aperture for all lens formats (medium format, MFT format, APS-C and so on).
This 37 minutes video by Tony Northrup is rather technical and complex, but it is a must see if you want to understand the tricks some camera manufacturer are using to mislead their customers. According to Tony Northrup only Canon, Nikon and Fuji are stating the truth with their crop sensor specifications.
Says Tony Northrup:
Please spread the word to end the cheating: Why you need to apply crop factor to both your ISO and aperture, and how Sony, Olympus, & Panasonic use crop factor to mislead buyers
The folks at iso1200 made a table of contents of the video:
0:00 - Introduction
1:28 - Focal Length & Crop Factor
3:35 - ISO & Crop Factor(2)
15:00 - Aperture & Crop Factor
21:18 - Panasonic misleading consumers
27:10 - Sony misleading consumers
29:53 - Olympus misleading consumers
30:50 - Panasonic misleading consumers (again)
32:01 - Fuji misleading consumers
33:18 - The Good Guys: Canon, Nikon, Fuji, Sigma, Metabones, Voigtlander, and You
36:51 - Summary
From the introduction:
With today’s large sensor camera systems such as the Canon EOS 70D, 5D Mark III, 1D C and the EOS C100, C300 & C500, it would almost seem like small sensor-based camcorders are irrelevant in today’s production environments. As someone who has a long history with small sensor-based camera systems and still uses them on projects that I produce today, that couldn’t be further from the truth. There are, in fact, many situations where small sensor camcorders are actually better suited for the job at hand and are not only used daily in many facets of television and web-based video production, but also are preferred.
In this article, I will discuss some of these applications and how the CanonXF205 & XF200 represent the next generation of Canon’s small sensor-based camcorder systems that target productions where these cameras excel. I will also focus on some of the key features of the camera, such as its rotating hand grip, Wide DR Gamma, enhanced image stabilization, infrared recording and Wi-Fi features, which, together, make for a unique small sensor-based camcorder that can be used in a wide variety of today’s productions.
Canon press release:
Canon Announces Free Firmware Ugrades for Company’s First Mopria™-certified Products
MELVILLE, N.Y., May 15, 2014 – Canon U.S.A., Inc., a leader in digital imaging solutions, announces that it will begin offering free firmware upgrades* for four imageCLASS laser multifunction printers and one PIXMA Wireless Inkjet Photo All-In-One printer that have received Mopria™ certification, allowing for simple and convenient printing from select mobile devices.
Laser Multifunction Printer
Photo All-in-One Inkjet Printer
The Mopria™-certified Canon printer lineup includes the imageCLASS MF6180dw/MF6160dw and Color imageCLASS MF8580Cdw/MF8280Cw laser multifunction printers for home offices and small-to medium-sized businesses, and the PIXMA MG7120 Wireless Inkjet Photo All-In-One printer.
The upgrades allow for automatic detection of these Canon devices over a Wi-Fi connection from Mopria™-certified smartphones, tablets and other compatible mobile devices.** Users can print documents and photos from these mobile devices by simply selecting a detected printer indicated on their device’s screen.
I finally arrived in New Delhi, India. And that’s my favourite pic today. I was strolling around the Bazar area in Paharganj when I saw here. She didn’t say a word.
Follow me on 500px while I am on the road.