What's the best camera for travel? Good travel cameras should be small, versatile, and offer good image quality. In this buying guide we've rounded-up several great cameras for travel and recommended the best.

what does thefocal lengthof a lens do?

Die 13 MP-Kamera hat einen eigenen hochleistungsfähigen Bildsignalprozessorchip (ISP-Chip) auf der Platine, der alle automatischen Funktionen (automatischer Weißabgleich, automatische Belichtungssteuerung) übernimmt. Die ISP- und Sensoreinstellung wurden fein abgestimmt, um erstklassige Videos sowohl in unkomprimiertem UYVY als auch in unkomprimiertem MJPEG zu erstellen. Diese Kamera erreicht bei benutzerdefinierten ROI-Auflösungen (Region of Interest) bis zu 816 Bilder/s.

What’s the best camera for around $1500? These midrange cameras should have capable autofocus systems, lots of direct controls and the latest sensors offering great image quality. We recommend our favorite options.

focallength中文

In still photography, yes. In cinematography, a zoom is a variable focal length lens which does not change its focal plane when changing focal lengths (which is important for certain effects, for example when the shot begins with the actors far away and then the camera zooms on them). In (professional) cinematography variable focal length lenses which change their focal planes when zooming are not used; in still photography it matters much less and therefore practically no distinction is made between parfocal and varifocal lenses.

FOV tofocal length

Die See3CAM_CU135 ist eine 13 MP-Fixfokus-4K-USB-Kamera mit gutem Schwachlichtverhalten und iHDR-Unterstützung. Diese 4K-Platinenkamera basiert auf dem 1/3,2-Zoll-CMOS-Bildsensor AR1335 mit moderner 1,1-μm-Pixel-BSI-Technologie von onsemi® Sie hat einen (M12) S-Mount-Objektivhalter, der es Kunden ermöglicht, das Objektiv je nach Erfordernissen auszuwählen und zu verwenden. Es ist eine Plug-and-Play-Kamera (UVC-konform) für Windows und Linux. Diese 4K-Platinenkamera ist auch abwärtskompatibel mit USB-2.0-Host-Anschlüssen.

1. Whats the difference between fixed focal length lenses and variable focal length lenses? (and why are fixed focal length lenses said to be better?)

Fixed focal lengthlens

Kunden, die Plattformen besitzen, die USB 3.1 Gen 1 unterstützen und das 13-Megapixel-USB-UHD-Kameramodul evaluieren möchten, können direkt den See3CAM_CU135 von e-con Systems® kaufen. Der Kunde kann See3CAM_CU135 mit / ohne Objektiv bestellen.

For historical reasons. Until about 40 years ago variable focal length lenses were rarely used in still photography (because they were complicated to build, therefore expensive, therefore not much market, therefore not that many available). Sometimes photographers used additional lenses, mounted in front of the primary lens; they still do, but less often. The primary (or prime) lens was the lens on the photocamera, and it was most usually fixed length -- and so the label prime was later understood to mean a fixed focal length lens, to which one may add various secondary lenses. (This is only the case in English; in other languages no such semantic shift took place.)

Fixed focal lengthlens vs zoom

Focal length

We don't usually test a product for ten years before reviewing it, but after a decade of using the Lowepro Photo Sport 300 AW II on an almost daily basis, Managing Editor Dale Baskin tells us why he loves this pack.

focallength是什么

Leica has announced the Q3 43, a variant of its full-frame fixed lens compact with a 43mm F2.0 normal lens. We've had the chance to use and test it, to produce an in-depth review.

FOV tofocal lengthcalculator

For example, say that the image I want to capture fits the field of view of a 35 mm lens on my camera. I can get that focal length either using a 18-250mm zoom or using a fixed 35mm lens; the zoom will not allow an aperture wider than f/4, will have a certain (maybe small) amount of chromatic aberrations and is less that optimally sharp. There are fixed 35mm lenses which allow f/1.8, have less aberrations and are sharper. This is because with a fixed focal length it's easier to make the aperture wider, to correct aberrations and to optimise sharpness.

If you want a compact camera that produces great quality photos without the hassle of changing lenses, there are plenty of choices available for every budget. Read on to find out which portable enthusiast compacts are our favorites.

A faster sensor, improved autofocus and video see Nikon's third-gen mid-range full-framer go toe-to-toe against Canon's EOS R6 II and the Sony a7 IV. We feel its all-round ability lifts it to the top of the pile.

Above $2500 cameras tend to become increasingly specialized, making it difficult to select a 'best' option. We case our eye over the options costing more than $2500 but less than $4000, to find the best all-rounder.

(b) You cannot say that fixed focal length lenses as a group are better than variable focal length lenses as a group. In fact, when the ability to vary the field of view without changing lenses is important (for example, on vacation, when carrying multiple lenses is not desired), a zoom lens is clearly better. However, generally at any (or most) given focal length you will be able to find a fixed focal length lens which is better (wider aperture, less aberations, higher definition) than any (or most) zoom lenses.

What’s the best camera for around $2000? This price point gives you access to some of the most all-round capable cameras available. Excellent image quality, powerful autofocus and great looking video are the least you can expect. We've picked the models that really stand out.

Neben See3CAM_CU135 enthält das Evaluierungskit e-CAMView (Windows) / QtCAM (Linux) - Beispielanwendung für Videovorschau und Standbildaufnahme mit den Funktionen der UVC-Erweiterung (für Windows 10/8.1, Linux). Weitere Informationen finden Sie im folgenden Abschnitt des Evaluierungskits.

(a) A fixed focal length lens is just that - a lens which does not have the capability to change its focal length. A variable focal length lens is made in such a way that the focal length can be varied by changing the relative positions of the optical elements inside it. Variable focal length lenses (1) allow the photographer to modify the framing of the subject without having to move physically closer or farther away and (2) allow the photographer to choose between having a wide field of view (short focal length) and concentrating on a small or distant detail (narrow field of view, long focal length) without changing the lens .