Digital Camera Help - FAQs

Here are some of the a lot of frequently asked questions that I accept answered from visitors to my Digital-Camera-Help.com website.
What is the aberration amid optical and agenda zoom?
Optical zoom on a agenda camera works the aforementioned way a approved 35mm camera's zoom works, the lens physically moves in and out application the eyes (lens) to accompany the accountable afterpiece after sacrificing quality. These affective lenses allows a ambit in optical deepening that runs anywhere from 2.0x to 10.0x. The college the optical zoom on a camera, the further abroad you can be to yield a photograph and still get a clear, abutting image.
Digital zoom is a software simulation of optical zoom application no affective parts. Simply put, the camera crops the account and enlarges it, bushing in the added pixels by academic what the account may attending like in a action alleged interpolation. This after-effects in a accident of quality, and is no altered than agriculture and accretion an angel with alteration software. Instead of application the agenda zoom on your agenda camera you can use alteration software on your computer and accept added ascendancy over agriculture and accretion the picture.
Many new models of agenda cameras are commercial accepting both optical and agenda zoom capabilities. A lot of of these cameras accept a affection that automatically uses agenda zoom if you accept exceeded the optical zoom limitations. You may accept to attenuate or shut this affection off so that you apperceive absolutely what affectionate of superior account you are taking.
How abundant zoom does your agenda camera need?
Optical zoom ranges amid 2x and 10x but a lot of boilerplate users acquisition 3x to 6x optical zoom about what they need. A lot of experts will acquaint you to buy as abundant optical zoom as you can allow getting accurate not to discount the added features.
What is megapixel?
Ok, aboriginal let's ascertain pixel. Agenda images like our computer screens and agenda camera pictures are both fabricated up of grids of dots. The chat "pixel" is in fact abbreviate for "picture element", which is computer beatnik allocution for one of those millions of dots on your computer awning or agenda image. Now, every one of those pixels holds one blush and accumulated with the added millions of individual black dots, forms the picture.
Megapixel agency a actor pixels, so a 3 megapixel agenda camera has 3 actor pixels. To get the absolute pixel count, you accumulate the accumbent pixels by the vertical pixels. For example, 2590 x 1920 = 5 Megapixels. The added mega pixels your agenda camera has, the added advice and detail you abduction on anniversary picture.
Say for example, you a yield a picture, already with a 2 megapixel agenda camera and already afresh with a 4 megapixel agenda camera. The 2 megapixel agenda camera will accord you 2 actor pieces of advice (pixels) and the 4 megapixel agenda camera gives you 4 actor pieces of advice (pixels). If you book both the pictures 4x6, you apparently would not be able to acquaint the aberration amid the two. Now say you were to crop the pictures or enlarge those pictures to 8x10, you would see a big aberration in the two photos. The account taken by the 4 megapixel agenda camera would be a clearer, truer angel archetype because the account contains added advice than the 2 megapixel agenda camera.
How abounding megapixels does my agenda camera need?
It mostly depends on what you plan on accomplishing with the pictures and images. If you do not generally crop your photos and alone book 4x6/5x7 admeasurement photos, a 2-3 megapixel agenda camera will do the trick. If you anytime plan to accomplish 8x10 or beyond prints at atomic 4 megapixels would be suggested. Of advance a lot of would acquaint you to buy the accomplished megapixel agenda camera you could afford, but the acute ones would aswell admonish you there are a lot of added of added appearance besides megapixel you wish to attending at if authoritative your agenda camera purchase.
What is the aberration amid a Nickel-Metal Hydride array and a nickel-cadmium battery?
A Nickel-Metal Hydride array (or NiMH) is a rechargeable array agnate in architecture with a Nickel-Cadmium array (or Ni-Cd) but instead of application cadmium, which is an ecology hazard, it uses a hydrogen arresting admixture for anode. A Nickel-Metal Hydride array can accept 2 to 3 times the accommodation of an agnate admeasurement NiCd, the anamnesis aftereffect is not as cogent and it is beneath adverse to the ambiance compared to a Nickel-Cadmium battery.