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Frequently Asked Questions

What's the difference between optical zoom and digital zoom?

FAQ about Digital Camera
It's important to understand this difference, as you could end up mighty disappointed with the results if you get one...

Can the optical zoom or digital zoom be used in movie mode?

Pentax Canada - Optio43WR
You cannot use the optical zoom while recording in Moving Picture mode. Digital zoom is possible when recording movies. See similar questions...

What is the difference between optical and digital keystone?

Projector Concepts
The optical keystone angle is the angle between the optical axis and the center of the projected image. This varies by some degrees and is dependent of the position of the zoom lens. This angle is actually a fixed angle and can only be "changed" by turning the zoom lens Digital keystoning gives you the possibility to have a correct square image, even when the image is thrown upwards in desktop mode or downwards in ceiling mode. See similar questions...

Can I hear a difference when using Optical or Coax cable for my digital connection?

Welcome to onkyochina.com ::
Technically, a coax connection will sound better because there is less processing to the signal. In certain situations, when experiencing EMI, RFI or long distance cable runs, using an Optical cable would be your best choice. See similar questions...

What is the difference between virtual colonoscopy and optical colonoscopy?

Virtual Colonoscopy Center at Brooke Army Medical Center
Virtual colonoscopy is an abdominal CT scan where "pictures" of the abdomen are taken and then the images are reconstructed into a 3D replica of the colon. The images are then read by a trained radiologist to look for pre-cancerous polyps or abnormalities inside and outside your colon. See similar questions...

Is the 3x optical zoom enough? What options do I have for more telephoto zoom?

D-580 Zoom > Frequently Asked Questions
The D-580 Zoom camera has a 4x digital zoom, in addition to the 3x optical zoom, which gives you a total of 12x seamless zoom overall. Simply use the Shooting Mode menu to activate the Digital Zoom feature. See similar questions...

Should I use the Digital Zoom on my Digicam?

uk.sci.astronomy FAQ
Digital zoom is a feature of little use to ordinary photography because all it does is expand the central portion of the image – which is easily be accomplished using a computer anyway. However, it is of some use for astronomical imaging because it makes focusing a little easier. Use the fully zoomed-in view to focus the object, then zoom out again to properly frame the object. See similar questions...

What is the difference between the C-740 Ultra Zoom and the C-750 Ultra Zoom?

C-750 Ultra Zoom > Frequently Asked Questions
X total seamless zoom (10x optical/4x digital) on C-750 Ultra Zoom versus 30X total seamless zoom on C-740 Ultra Zoom (10x optical/3x digital) Megapixel CCD (effective) on C-750 Ultra Zoom versus 3.18 Megapixel CCD (effective) on the C-740 Ultra Zoom See similar questions...

What is the difference between the Zoom 6000 and 12X Zoom?

Navitar Machine Vision - Solutions - Research/Learn - FAQ's
The 12X zoom has a higher N.A. and larger zoom range. The Zoom 6000 has a smaller profile. The Zoom 6000 is shorter with a smaller outside diameter. See similar questions...

What about optical soundtracks ?

Audio Post FAQ's
Optical soundtracks (we mentioned them earlier). Almost all of the release formats, including the digital ones have provision for some kind of optical soundtrack, even if only as a backup. The optical soundtrack refers to the two-channel soundtrack that is carried on the optical track of the film release print. See similar questions...

How do I get an optical soundtrack ?

Audio Post FAQ's
Once your surround sound format has been selected (see the paragraph below for more), you need to order an optical soundtrack negative for the film. In the case of LCRS mixes, a traditional two-channel; Printmaster track is created, and this is sent to an optical sound house for the creation of the optical negative. The optical sound house will record the soundtrack onto 35mm film using a special camera, and some will also develop their own soundtrack masters. See similar questions...

What is Optical RAID?

Ultera Systems | Frequently Asked Questions, Virtual Tape St...
Ultera's Optical RAID controller solutions virtualize an array of optical devices using RAID (Redundant Array of Independent Devices) to operate as a single logical optical drive. Seen by the host as a single optical drive with increased performance, online storage capacity & reliability. Optical Striping (RAID Level 0) increases performance and online storage capacity up to 4 times more than a single optical drive. See similar questions...

What are the differences between a coaxial digital audio cable and an optical digital audio cable?

HOME ENTERTAINMENT 4 LESS
A coaxial digital audio cable uses copper wiring as its signal conductor and dual-RCA jacks as connectors. An optical digital audio cable uses fiber optic wiring as its conductor and dual Toslink connectors. Both types of cables perform the same function; however, an optical digital audio cable is immune to external interference because its conductor is non-metallic. See similar questions...

What is the difference in NeoVision and other optical stores?

Eye Glasses Union City | Bifocal Reading Glasses Mountain Vi...
Our highly skilled opticians help you in selecting the right frame to fit your face comfortably. People usually do not know what to look for in a frame and end up choosing frames that are not appropriate for their prescription or their facial features. See similar questions...

Smoke Detectors What is the difference between ionisation and optical?

SD Fire Alarms Shop
Optical is a newer technology which is less prone to false alarms caused by cooking fumes, cigarette smoke, dust etc... Optical sensors are more responsive to smouldering fires producing large particle smoke typical of fires involving furniture and bedding. They are more immune to invisible smoke produced by 'burning the toast' and similar cooking fumes. This makes them ideal for siting in hallways close to kitchens where false alarms from ionisation alarms may be a particular problem. See similar questions...

What is the difference between two-touch zoom and push-pull zoom?

Canon EOS Beginners' FAQ III - Lenses
There are two basic ways to adjust the focal length of a zoom lens. Some zoom lenses have a zoom ring as well as a focus ring and so are called two-touch. Rotating the zoom ring adjusts the focal length. Other lenses slide in and out like a trombone or telescope; the so-called push-pull design. The push-pull design is more vulnerable to zoom creep than two-touch. See similar questions...

What is the difference between digital and conventional mammograms?

Conventional mammography requires x-ray film and phosphorescent intensifying screens (light) to make a diagnosis. Digital mammography is an electronic transfer of data. Albany Med utilizes the most recent Digital Mammography - Second Generation. This does not require light, but a direct transfer of information, which makes the images clearer. In particular, the area around the skin tissue within the breast, allowing the radiologist to visualize very dense breasts tissue. See similar questions...

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