How quickly will they wear down over time?
How durable are the lenses?
How many light cycles do they need to collect enough light to allow accurate exposure?
How often do they need to be cleaned?
Whether a brand name brand is suitable for this purpose is a matter of consumer preference, particularly if you intend to use a camera as a work camera, as you can be liable for its depreciation if it ever becomes damaged or damaged through accident or other means.
An optical grade or brand name brand is much more likely to endure than a cheap plastic or glass grade brand, as it will still be used regularly and if it ever becomes damaged, repaired or replaced then you are much more likely to receive a refund or exchange from the manufacturer.
For more information about choosing the right brand for work camera, click here.
For more information regarding choosing the right lens and camera for your needs click here.
How can I determine the difference between a digital and the digital intermediate?
Many new cameras come with a D-SLR conversion chip embedded in the camera body. The conversion chips are designed to enable the D-SLR body to display on the LCD screen an image from the CMOS chip inside the camera so that the image captured on the LCD screen matches what is captured on the camera. The conversion chip is used for more precise framing and exposure control for more accurate exposure than the D-SLR’s built in “Lumix” CMOS sensor.
Many D-SLRs come without the chip in the digital image. There is a firmware update available which will enable the D-SLR to receive the converted image by turning the camera into a D-SLR with the converted image capability. Click here to find out more information on converting a D-SLR to D-SLR with the converted image capability.
Many of the Canon Digital SLR series include a Canon EOS DIGITAL MARK I APS-C or APS-H (or equivalent) sensor. These are the high quality modern CMOS sensors that capture high resolution images and full high dynamic range (HEVC) video in true black and white at all settings. The EOS models that include these sensors are also highly recommended for video work.
In both digital SLR models and cinema cameras the DIGITAL MARK I sensor has more memory channels for higher performance of the image-based system than the APS-H (or equivalent) type sensors