Canon Rebel T4i Product Advisory Warns of Defective Rubber Grips

Rebel T4i Rubber Grip Defect

Earlier this month, Canon issued a product advisory on the Rebel T4i for an error in the firmware.  Two days after the issuance of that advisory, Canon issued another product advisory for the Rebel T4i with regard to the presence of zinc bis in the rubber grip.

In short, this substance may cause the rubber grips to turn white and could potentially lead to skin allergies or irritation.  The lot affected can be identified by looking at the serial number.  If the sixth digit is “1” then your camera could be affected.

Specific details in the full product advisory below. [Read more…]

Nikon DSLR and Lens Instant Rebates

Nikon D800

There are currently several rebates available for Nikon DSLR and lens packages, including the D800, D4 and D7000.

The Nikon D7000 is available with a $100 instant rebate as well as additional discounts on lenses such as the AF-S 55-300mm ($150 off), AF-S 18-200mm ($150 off), AF-S 24-70mm f/2.8G ($200 off) and AF-S 70-200mm f/2.8G VR II ($200 off).

You can choose either the D7000 body only or the D7000 w/ 18-105mm kit lens.  To take advantage of the bundle rebates, click the “Buy Together and Save” link on the B&H product page.

There’s a similar deal for the Nikon D800 and D800E.  Clicking the “Buy Together and Save” link will let you bundle the 24-70mm or 70-200mm lenses with $200 for each lens.  In addition, B&H currently is bundling free 77mm Tiffen UV and Circular Polarizer filters with the deal.

The exact same deal applies with the Nikon D4 as with the D800.

These instant rebates are set to expire on July 28, 2012.

Canon’s Rebel T4i Pixel-Level AF Sensors; Mirrorless Next?

Rebel T4i

The Rebel T4i is the first Canon DSLR to feature full-time AF in video mode.  The past Canon DSLRs have featured the ability to force an AF confirmation using a slow and clunky contrast-detect method, which was simply unusable during video capture.  Another AF confirmation option has been to use the cameras’ phase detection sensors; however, this caused a blackout during live view thanks to the mirror flipping down in front of the image sensor.

The folks over at Chipworks [via Image Sensors World] tore down a Rebel T4i to get a look at the image sensor and reveal phase detection sensors mixed among the pixels.  This is something that Canon has been cooking on for a while. (Note this patent application that I discussed back in 2010.)

Chipworks Cano Rebel 4i pixel-array-ir

And while we’ve seen this concept implemented in prior cameras (notably the Fuji F300EXR point and shoot camera and Nikon 1 Series), Canon has gone about it in a technically different way to make it effective for DSLRs. [Read more…]