I shouldn’t buy a new iPhone4

It’s still just an iPhone. This is a nice piece of hardware, no doubt. But it won’t do that much more than your iPhone 3GS, which will be capable of multitasking, can shoot decent photos and videos, has the same maximum storage options, and operates at the same network speeds. Unless the new camera and flash, screen res and video chat—which is Wi-Fi only, and connects exclusively to other iPhone 4s for now—are things you absolutely need, this is a non-essential upgrade. Apple is the king of incremental upgrade and iPhone 4 is no exception.

via Should I Buy an iPhone 4?

The article gives sound advice. Looking forward to iOS4 to be released.

The truth about ‘megapixels’

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Image via CrunchBase

A lot of people buy cameras, especially camera phones based on the pixel count, often starting conversations like this “My 8MP camera > your 5MP camera!!” That can’t be further from the truth.

This is what matters most, the sensor:

The sensor is where most of the megapixel machismo comes from. When you squeeze the shutter button, the sensor (like film in old-school cameras) is exposed to light for however long you have the exposure time set for. The most common metaphor to talk about how a sensor works is that it’s like an array of buckets (the pixels) that collect light, and the amount collected is turned into an electrical charge, which is converted into data. We talked a bit about the differences between the two major types of sensors, CCD and APS (CMOS) earlier.


Lots of informative links. To satisfy my curiousity, I went to look for the technical specifications of the N82’s camera. This is what the Nokia site says:

Sensor: CMOS, 5 megapixel (2592 x 1944)
Carl Zeiss Optics: Tessar™ lens
F number/Aperture: F2.8
Focal length 5.6 mm
Focus range 10 cm ~ infinity
Macro focus distance 10-50 cm

Doesn’t really give the sensor dimensions, does it?