Circle of Confusion in Photography appears as light is actually a cone of photons, it is not designed by nature to be captured on a flat surface. Circle of Confusion is quite difficult topic under optics and in this article only the basics of Circle of Confusion in Photography will be discussed. What is Circle of Confusion in Photography ? As I have said - in nature everything gets … [Read more...]
Digital Photography
Digital Photography covers all the techniques like Digital Camera like DSLR, Digital Rangefinder to obtain a picture through the use of an electronic sensor as well as processing techniques.
Pentaprism Viewfinder : Components and Operation
Pentaprism Viewfinder is special type of prism viewfinder, which is usually used on DSLR and old SLR cameras. Pentaprism Viewfinder allows the view through the lens without inverting it. This intuitive picture framing is easier than the viewfinder. In Pentaprism Viewfinder, the design is done so that the incident rays falls at an angle less than the critical angle nullifying total internal … [Read more...]
What Camera Should I Buy ? Camera Buying Guide
What Camera Should I Buy is a problematic question not only for the beginners but also for the advanced users due to their size, price and portability issues. What Camera Should I Buy? Which digital camera is best ? These set of questions regularly asked by many who are new to photography and also who already have a DSLR camera and facing portability issues. There is no general answer to the … [Read more...]
L lens of Canon : What is L Lens and Why it Costs So High
L lens of Canon is the most feature rich aspherical Lens for DSLRs. Cost of a L lens is few times higher than its normal EF Lens counterpart. The most asked question is why Canon L Lens is named as L Lens. Canon Europe says L stands for Luxury, before that statement in a pdf file (and still now) many professional believes that L is for Aspherical Lens, that is universally present in Canon L Lens … [Read more...]
Prime Lens or Fixed Focal Length
Prime Lens is a lens for DSLR cameras whose focal length is limited by the fixed design. Compared to a fixed focal length Prime Lens, a zoom lens is usually easier and cheaper to develop and produce. The lens inside our eye is actually a Prime Lens whose focal length within a limited range can be changed by the biological mechanism but it is never a zoom lens. Terminologies associated … [Read more...]
Depth of Field in Digital Photography
Depth of Field traditionally belongs to optics and has been under photography for many years. Depth of Field is the area in which the image captured by the lens is sharp (that is, it is focused), so that in the photograph is, people and objects that are within that area also appear sharp. A more complete and accurate definition of Depth of Field would be: Depth of Field is the space in front and … [Read more...]
Image sensor of Digital Camera : CMOS and CCD
Image sensor of Digital Camera those are in consumer level usage can be CMOS or CCD. There are some differences inthe technology and performance of Image sensor. An image sensor is a device for recording of two-dimensional images in visible light range. There are also two-dimensional semiconductor detectors for recording high-energy ionizing radiations such as X-ray and gamma radiation. … [Read more...]
Macro Photography : Details on How the Macro World is Captured
Macro Photography or Macro is an area of photography, in which images of objects scales to 1:1 or more. Differences exist between a Macro with a Close Up shot. Normal lenses has a maximum magnification limit ratios ranging from 1:7 to 1:10. With special Lens and diaphragm arrangement, this can be made 1:1 - this is the basic optics behind Macro Photography. Definitions of Macro … [Read more...]
High Dynamic Range (HDR) Image and Photography
High Dynamic Range (HDR) Image and Photography is a digital image that can save the naturally occurring differences in luminance detail. Conventional digital images that are not in a position to be referred to as low dynamic range images or LDR images. High Dynamic Range images can be taken by special cameras, some computer graphics software or from an exposure series reconstructed from LDR … [Read more...]
Megapixels in Digital Camera : Demystifying Image Resolution
Megapixels in Digital Camera is a measurement of resolution of image. The image sensor record brightness levels on a per-pixel unit. A pixel is the homogeneously colored smallest unit of a digital image. 1 megapixel equals to 1 million pixels. Unlike other measures used in computing where the base is usually used for prefixes 1024 rather than 1000, in case of Megapixels it is … [Read more...]
ISO Film speed in Digital Photography
ISO Film speed in Digital Photography is widely used to denote the photographic surface's sensitivity to light and the way it might behave under ideal condition. We have used a kind of legal language to define this ISO Film speed because there are many things behind ISO Film speed in Digital Photography, which you might like to know. How ISO Film speed arrived in the field of … [Read more...]