The shutter count, or shutter actuations, of a camera is the number of photographs that camera has taken. It is an important piece of information when buying a used camera as it gives some indication of how much the camera has been used, but it is not the only indication of wear and the number itself needs to be viewed in context.DSLR cameras have a mechanical shutter mechanism to cover and expose the digital sensor. Each time you take a photograph the shutter mechanism moves back and forth across the sensor at a precise rate according to the shutter speed you selected. This is one actuation and adds one to the shutter count. Like any mechanical device the shutter experiences wear and tear and eventually it will fail.
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The "normal" range of camera ISO is about 200 to 1600. With today's digital cameras you can sometimes go as low as 50 or as high as over three million, depending upon the camera model. The number chosen has two important qualities associated with it. First, it sets the amount of light needed for a good exposure. The lower the number, the more light required. The more light that's required, the more likely a slow shutter speed will have to be used. That means low ISOs, like 100 or 200, are most often used in bright situations (like sunlight) or when the camera is mounted on a tripod. If you don't have a lot of light, or need a fast shutter speed, you would probably raise the ISO.
Each time you double the ISO (for example, from 200 to 400), the camera needs only half as much light for the same exposure. So if you had a shutter speed of 1/250 at 200 ISO, going to 400 ISO would let you get the same exposure at 1/500 second (providing the aperture remains unchanged). This is why high ISOs are so often used indoors, especially at sporting events. Needing a fast shutter speed to stop action, photographers regularly choose ISO 1600 or above.
All of this means photographers are constantly doing a balancing act. They want to keep their ISO low for high quality images (low noise), but also they need a fast enough shutter speed to get a sharp picture. That's why there's such high value placed on groundbreaking cameras such as Nikon's D5, D500 and D850 that allow photographers to shoot at higher ISOs with less noise than ever before.
Auto ISO was introduced into digital cameras several years ago to help photographers manage noise balance. Turning on that feature allows the camera to push the ISO up when it decides the shutter speed is getting too low for a good picture. Even better, newer Nikon cameras have added "ISO Sensitivity Auto Control" to the menu choices. This takes Auto ISO and lets you have some say about what happens. Using it, you set the limit for how high it can go (800? 3200?) and at what shutter speed it should start raising the ISO (1/125? 1/30?). The amount of control this feature allows means more photographers will start taking advantage of it.
Dealing cards Ace through 5 again, we raised the camera's minimum shutter speed to 1/4000 of a second. The image below compares the motion blur in the dealer's hand and card, with the 2 card much more legible in the fast shutter speed example.
1/4000s shutter speed completely eliminated all traces of motion blur. 1/1000 and 1/2000 second shutter speeds significantly reduces blur, but it was still noticeable around the dealer's fingers and edges of the cards when looking at the recordings frame-by-frame.
On the other side, sometimes users want or camera manufacturers default their maximum shutter to a rate slower than the frame rate (e.g., a 1/4s shutter for a 1/30s camera). Not only does this cause blurring of moving objects, but you also lose frames.
The frame rate per second can never be higher than the number of exposures per second. If you have a 1/4s shutter, the shutter / exposure only opens and closes 4 times per second (i.e., 1/4s + 1/4s + 1/4s + 1/4s = 1s). Since this only happens 4 times, you can only have 4 frames in that second.
Some manufacturers fake frames with slow shutter, simply copying the same frame over and over again. For example, if you have 1/15s shutter, you can only have 15 exposures and, therefore, 15 frames. To make it seem like you have 30 frames, each frame can be sent twice in a row.
The past two years have seen three staples of Austin's sparse Filipino offerings (Tito Adobo, Mang Dedoy's, and Be More Pacific, which reopened in Houston) shutter their doors, encumbered not only by pandemic pressures but also widespread hesitancy to step outside the collective comfort zone. Not that Filipino food is particularly foreign, mind you. At heart, it is a culinary collision between Asian and Spanish flavors, and that should play to these restaurants' favor. Sitting at the sweet spot between familiarity and exoticism and boasting all sorts of intoxicating flavors and psychedelic colors, Filipino food has every reason to be accepted and adored. For whatever reason, though, cuisine from the Philippines remains underrepresented and underappreciated in mainstream America. Maybe it boils down to an admirable refusal to sacrifice traditional flavor and cultural identity for quick success.
Each of these restaurants promise outstanding versions of some or all of these dishes, plus others sure to delight customers to their core. More importantly, however, they are run by families, couples, and individuals who believe in using their food to share themselves and their culture with the wider world, perhaps changing it in the process.
After her grandmother aged and had to shutter the business the family struggled to make ends meet, and Corass, with entrepreneurial spirit in her veins, pursued the passion and purpose she inherited from a grandmother whose warm presence filled the kitchen every time Corass fired up the oven. "At the age of 9, I started to cook on weekends and would sell to the neighborhood. Watching my mom cook helped me a lot, and I started to dream of becoming a businesswoman and having my own restaurant someday."
The lower the shutter speed, 1/60 for example, the slower the shutter closes and the more light is let into the lens. The higher the shutter speed, like 1/500, the quicker the shutter closes and the less light is captured.Shutter speed also affects movement being captured. A slower shutter speed takes the photo slower, meaning that if something is moving in the photo or your hand is shaky, that blur is caught in the photo.
For optical viewfinder shooting, which tests considerably faster than Live View, the Nikon D5000 uses the company's diamond-shaped 11-point AF array, whose results are complemented with data from the camera's 420-point exposure system. Also known as the Multi-CAM 1000, the autofocus system in the Nikon D5000 is the same as the D90's, which means it includes 3D Color Matrix Metering II for instant scene evaluation, even in extreme conditions. The Nikon D5000 also has the Integrated Dust Reduction System, with a four-frequency ultrasonic motor to shake dust from the sensor, as well as the Airflow Control System, which works to move dust away from the sensor with shutter release.
Other features from the D90 make it into the Nikon D5000, including Auto Active D-Lighting, In-camera retouching, and Picture Control. The Nikon D5000's shutter is expected to last 100,000 cycles, and a new Quiet Release Mode reduces shutter noise for use in very quiet situations.
Controls. Like the D60, the Nikon D5000's Mode dial is behind the shutter button, while on the D90, the mode dial is on the opposite shoulder to make room for a monochrome status display. The Nikon D5000 instead has only the rear LCD to use as a status display. The power switch surrounds the shutter release button, but note the lack of a Sub-command dial in front of that, typically used on the D90 to adjust aperture, among other things. Just beneath the red accent is the infrared receiver, made for the optional Nikon ML-L3 remote control. Like its sub-$1,000 siblings, the Nikon D5000 has no depth-of-field preview button. Just above the D5000 logo are three holes for the camera's monaural microphone.
Live view shooting. Activating Live view on other Nikon SLRs has included turning the Drive Mode dial to Lv and then pressing the shutter button to lock the mirror up; hardly intuitive. The Nikon D5000, however, has a dedicated Live view button on the back, just right of the LCD, within easy reach of the thumb. With a single press of the Lv button, the mirror flips up and Live-view framing begins. The difference with the Nikon D5000 is that you can only focus in Contrast-detect mode, whereas the Nikon D300 and D700 allowed a choice between Handheld (Phase-detect) and Tripod mode (Contrast-detect mode).
Another alternative is to use the ADL bracketing feature, which alternates between no D-Lighting and Auto D-Lighting. You have to remember to hit the shutter release twice to get both of your shots -- it doesn't save two files for each shot -- but it's a helpful feature if you're unsure of your lighting.
Storage and battery. The Nikon D5000 ships with an updated version of the battery used by the Nikon D40 and D60, the EN-EL9a, a 7.2V 1080mAh lithium-ion battery pack. The D5000 is also backward-compatible with the older 1000mAh EN-EL9 battery. The Nikon D5000 is rated for 510 shots with the new battery, using the CIPA standard. The camera also comes with an MH-23 Nikon Quick Charger and a power cord.
Autofocus. Though the Nikon D5000's phase-detect autofocus speed tested very well in our lab tests, turning in 0.27 single-point and 0.35 auto-area AF shutter lag numbers at wide angle, I noticed considerable AF lag while shooting indoors in low light situations, especially in Wide-area AF mode. At first we considered whether it was the kit lens's f/3.5 maximum aperture, but the AF-S 35mm f/1.8G gave us the same trouble, sometimes taking a second or more to make a decision. It's nice that the Nikon D5000 has an AF-assist lamp, but it really doesn't speed things up much. The Canon XTi I have at my desk is considerably faster in both modes, though it too is slower in auto-area AF, just not as slow. 2ff7e9595c
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