As a general rule you want 200dots/inch for a quality print, although you can drop that to ~150dpi if you need. About the only thing this determines, with any degree of certanty, is how large you can print an image until it appears pixelated (boxy).
The olympus is great if I need something small. So even though the olympus has bigger megapixels I still turn to the canon when I need quality photo's. Although the size of the image is larger coming out of the olympus, the G3 still kicks it's ***** in terms of photo quality - better low-light performance, crisper images with cleaner edges, much wider field of view in the wide-angle end of zoom, more zoom, etc. To put this into perspective, I have both a canon G3 (4 megapixel, large lens, 4x zoom) and an olympus somehting-or-other (6 megapixel). The quality of the optics, the quality of the CCD, the power of the zoom, how wide the "wide-angle" is, the build quality of the camera are all far more important then the megapixels. Larger cameras tend to not have these issues, but are less convenient for travel, tend to use more power, are (generally) more expensive, and tend to attract thiefs.ĥ) The resolution (megapixels) of a camera are not the only feature you need to worry about.
But they tend to have lower zoom, smaller lenses (poorer low-light preformance), and weak flashes. Smaller, pocket-sized cameras are great for traveling - they're small, fit almost anywhere, and are "descrete" should you want to take photo's where its not allowed. Likewise, cameras which work off of 'AA' batteries are also good for the traveler - these batteries are available everywhere, you can use the new rechargables (nickel metal hydride) - which last forever, and they (normal AA's and NiMH rechargables) are much cheaper then buying additional camera-specific lithium batteries.Ĥ) Any time you buy a camera there's going to be trade-offs. Look for cameras which have power-saving options (like being able to turn off the LCD screen). But don't forget about wide-angle its just as important to have a good wide-angle (more important if you take a lot of scenery pics) as is zoom.ģ) Power consumption can be a major issue - particularily on trips where access to power may be limited. So if you're planning on using this for diving photo's you'll probably want to look for a camera with a larger lens.Ģ) Optical zoom is the only useful form of zoom. Few other things:ġ) Larger diameter lens = more light-gathering power = better in low-light conditions. Although they cost more you'll be much more staisified with the resulting pictures. You're better off saving your money and going for a name-brand camera (canon, nikon, and olympus being the ones I would recommed). I'd just turn this feature off - you can get the same effect (or better) by cropping the image on your computer, and resizing it for printing then. The digital zoom (which a lot of major manufaturers also have) is a gimmic - just more interpolation. The camera does actually have a 3x optical zoom. So even if it interpolates to 12MP, the picture is no better (and probably worse) then what comes off of the chip (probably 3-4MP).Īs for the optics, they're not great. Overall this actually decreases image quality as it introduces artifacts that wouldn't be there if you just use the cameras raw resolution. Interpolation is just a way of mathmatically enlarging the image. The housing is designed to be used in automotive, medical device, pharmaceutical and food production environments.Don't waste your money - even if the scam bit Don pointed out wasn't true these cameras are not nearly as good as they appear. Ready to mount on standard fixings, the enclosure also includes an anti-reflection optical viewport and, at the rear of the product, the IP65 cable gland is configurable to provide a watertight seal around one or more cables. In addition, the camera housing is designed to accommodate large diameter lenses and boasts telescopic adjustment to allow the lens to be altered close to the viewport, minimising reflections.
#SVP CAMERAS FULL#
In terms of accessibility, the front of the enclosure cover can be removed to provide the user with full access to the vision system camera and optics, allowing changes to the focus and aperture settings. The IVS-SVP camera housing, which supports all standard IVS camera options, can be used alongside third-party vision system cameras, as the camera housing can be purchased separately. Industrial Vision Systems (IVS) has launched a new enclosure to protect vision system cameras placed within harsh working, industrial environments.
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