How come the camera is square, the photos are square, but the lens are round?
Just wondering why? Like shouldn’t it be a square camera lens?
Good question.
First, lenses are naturally round. Making them square would be a lot of work, would ruin the quality, would be bigger, etc.
Second, film is naturally square (rectangular actually). Otherwise you would have a lot of waste space, etc. Plus it’s easier to visualize a square picture instead of a round one. Square film=square picture.
Third, the real question. Why doesn’t having a round lens mess up a square picture in some way? Isn’t this like putting a round peg in a square hole? Why does it even work?
This is the way camera optics work: light comes from the sun, light bulb, etc. and reflects off a point on an object. The reflection scatters in every direction. Cameras capture as much of this scattered light as they possibly can. The physics of a lens is such that when an object is in focus, all the light that strikes the lens gets bent while going through the lens in such a way that it all goes back to a single point on your sensor/film. This is the magic of a lens–it doesn’t matter where the light hits on the lens, it all comes from the same point and goes to the same point (only true while in focus of course). It does this for every point in the image, coming from a point ending up in a point. This is why the shape of the lens, whether it’s square or round, doesn’t matter. The curvature of the lens is critical however.
Part 1 of 2: I used Loctite epoxy putty to make a removable frame to hold a wide angle lens on a Kodak Zi8 video camera. I used epoxy, because it is not affected by heat as much as the moldable plastic you can buy online. I did not glue anything directly to the camera, nor did I have to take it apart to add a magnetic ring like a popular lens mod from china, so no warranty was voided and no damage occured to the camera.
Made to be the tool of choice for serious photographers and semi-professionals, the Canon EOS 7D Digital SLR Camera features an all-new 18.0 Megapixel APS-C size CMOS sensor and Dual DIGIC 4 Image Processors, capturing tremendous images at up to ISO 12800 and speeds of up to 8 fps. The Canon EOS 7D Digital SLR Camera has a new all cross-type 19-point AF system with improved AI Servo AF subject tracking and user-selectable AF area selection modes for sharp focus no matter the situation. The EOS 7D’s Intelligent Viewfinder, an entirely newly-designed technology, provides 100% coverage and displays user-selected AF modes as well as a spot metering circle and on demand grid lines. New iFCL Metering with 63-zone dual-layer metering system uses both focus and color information to provide accurate exposure even in difficult lighting. The EOS 7D also captures Full HD video at 30p (29.97 fps), 24p (23.976 fps) and 25p with an array of manual controls, including manual exposure during movie shooting and ISO speed selection. The Canon EOS 7D Digital SLR Camera features a magnesium alloy body that is dust- and weather-resistant and shutter durability of up to 150,000 cycles. Compatible with over 60 EF and EF-S lenses as well as with EOS System accessories, the creative opportunities – not just with stills but also with video – are beyond amazement.
This is my third Unboxing video and this time its my first Digital SLR camera, the Nikon D40 and the Nikkor 18-55mm VR lens. It is a very good beginner/amateur DSLR, has tons of features and is very easy to use. The Help menu is a blessing to every beginner!!!
ºIncubus – Look Aliveº
“The hardest thing is rendering a moment moving too fast to endure
YOKOHAMA, JAPAN (03/11/2010) — Sony’s prototype compact camera with an interchangeable lens, the unreleased Alpha-series model that was first shown last month at California’s PMA show, was presented in Japan on Thursday but the company still isn’t disclosing much about the device. The camera is aimed at people who want a little more creativity than a fixed-lens compact camera allows but who don’t want to carry a larger and bulkier digital SLR camera.
filmed by Tommy G
The ultra-compact, lightweight MHS-PM5 camera slips easily into a pocket or purse so it can be taken anywhere to catch special moments on-the-go. This design is offered in four fashionable colors — dark purple, blue, pink, and white — and features a rotating lens that swivels 270 degrees to capture life from any angle: get down low, aim high or record yourself.
Get wide-angle and fish-eye effect for about $5 with this DIY lens attachment. Expands your camera’s viewing angle up to 200 degrees. Great for tight-quarters indoor shots, stunning landscapes, and funny fish-eye photos. Amazing results. For use on photo and video cameras.