Published earlier today and already discovered by AppleInsider, a new patent from Apple seems to show that the Cupertino company would like to put swappable lenses in future iPhones. The camera in the iPhone 4S is already great, it was even used all by itself for an editorial fashion shoot, but there is always room to improve in creative ways and swappable lenses are certainly uncharted territory for a camera phone. A sample from the patent reads: It would be desirable to provide a structure for a compact device that allows the end user to reconfigure the optical arrangement of the device while retaining the benefits of assembling the device using a pre-assembled digital imaging subsystem Apple would achieve this by using a removable back pannel. They may even take it one step further and create a panel complete with multiple lenses. Sure, a patent doesn’t necessarily mean a product is coming in the near future, but if Apple are looking to compete with the updates coming to the Lumias, and re-establish themselves as “game changers” in the world of phonetography, then this is definitely one way to do it. (via AppleInsider)
PHOTOS USING THE IPHONE 4S
TECH SPECS OF THE IPHONE 4S
The retina has a static contrast ratio of around 100:1 (about 6.5 f-stops). As soon as the eye moves (saccades) it re-adjusts its exposure both chemically and geometrically by adjusting the iris which regulates the size of the pupil. Initial dark adaptation takes place in approximately four seconds of profound, uninterrupted darkness; full adaptation through adjustments in retinal chemistry (thePurkinje effect) are mostly complete in thirty minutes. Hence, a dynamic contrast ratio of about 1,000,000:1 (about 20 f-stops) is possible. The process is nonlinear and multifaceted, so an interruption by light merely starts the adaptation process over again. Full adaptation is dependent on good blood flow; thus dark adaptation may be hampered by poor circulation, and vasoconstrictors like tobacco.
The eye includes a lens not dissimilar to lenses found in optical instruments such as cameras and the same principles can be applied. The pupil of the human eye is its aperture; the iris is the diaphragm that serves as the aperture stop. Refraction in the cornea causes the effective aperture (the entrance pupil) to differ slightly from the physical pupil diameter. The entrance pupil is typically about 4 mm in diameter, although it can range from 2 mm (f/8.3) in a brightly lit place to 8 mm (f/2.1) in the dark. The latter value decreases slowly with age, older people's eyes sometimes dilate to not more than 5-6mm.
Field of view
The approximate field of view of a human eye is 95° out, 75° down, 60° in, 60° up.[clarification needed] About 12–15° temporal and 1.5° below the horizontal is the optic nerve or blind spot which is roughly 7.5° high and 5.5° wide.
Accommodation of the lens
A change in the curvature of the lens, accommodation is carried out by the ciliary muscles surrounding the lens contracting. This narrows the diameter of the ciliary body, relaxes the fibers of the suspernsory ligament, and allows the lens to relax into a more convex shape. A more convex lens refracts light more strongly and focuses divergent light rays onto the retina allowing for closer objects to be brought into focus.
TEN BEST IPHONE APPS