Several websites are already reporting the official announcement from Sigma: the new mount conversion service will start on September 2nd, 2013 and it will be limited to all Sigma Global Vision lenses. In addition, the company also announced that all Sigma products bought after July 1st, 2013 will be granted a new 4 years warranty.
Full press release:
Those are the top 10 most visited NikonRumors posts for July 2013:
Few days ago PhotoRumors broke the news about a new upcoming announcement from Sigma. The details are now in: on Thursday Sigma will announce a new free mount conversion service. This will allow switching between brands very easy and will bring an extra incentive to buy Sigma lenses.
 Nikon 50mm f/1.2 lens patent |  Nikon 60mm f/1.2 lens patent |
Nikon filed another patent in Japan for a 50mm f/1.2 and 60mm f/1.2 lenses. The 50mm f/1.2 lens (and different variations of it) has been the most patented Nikkor lens in the past few years – here are some of the related patents filed in the past:
Compared to previous patents, the latest filing has calculations for optimized/reduced lens ghost and lens flare.
Nikon Professional Services (NPS) published a new video demonstrating how quickly they can diagnose and fix a Nikon D4 DSLR camera – the total repair time was 20:42:
“If you’re a pro photographer, you need a support service that gives you fast and efficient repairs. Nikon Professional Services (NPS) Service Technician, Kodai Matsumoto, demonstrates just how quickly he can diagnose and repair a Nikon D4 – shot on location at the FINA World Swimming Championships, BCN2013, in Barcelona. NPS provides support services like check and clean, running repairs and equipment loans to accredited Nikon photographers at major events like BCN2013.”
Here is the video:
Refurbished Nikon 1 V1 camera with a 10mm-30 VR lens currently sells for $289 (with 1 year warranty).
Lomography, in cooperation with Zenit, started a kickstarter project for a Petzval portrait lens for Nikon DSLR cameras.
Nissin announced a new Di600 flash for Nikon cameras.
DxOMark published test results for several super tele photo Nikon lenses, including the Nikkor 200mm f/2 (see review) which is one of the sharpest lens they have ever measured:
