| 词条 | Minolta 9xi |
| 释义 |
| camera_name = Minolta 9xi | image = Minolta9xi.JPG | type = 35mm SLR | lens_mount = Minolta A-Mount | focus = TTL phase detection autofocus (4 sensors) | exposure = 14-segment honeycomb evaluative metering | flash = External flash | frame-rate = 4.5 frame/s }} The Minolta 9xi was, when new in 1992, an advanced 35 mm single-lens reflex camera design. It incorporated the world's fastest autofocus system (according to the company and when coupled to a xi series lens), had a maximum shutter speed of 1/12000 of a second and a 14-zone metering system. The 9xi had been improved in many areas over the previous flagships, the 9000 and 8000i, including:
DesignThe Minolta 9xi was a bold design compared to its rivals and predecessors.{{According to whom|date=October 2016}} It had smoothed contours completely unlike the previous 9-class camera the Minolta 9000, and unlike many competing cameras. Buttons were largely hidden, or placed directly by the fingers controlling them. This led to unusually clean aesthetics and an uncluttered appearance.{{According to whom|date=October 2016}} TechnologyThe Minolta 9xi is, to this day, still impressive in terms of technological ability. Nearly 5 frames per second without an external motor or battery pack was uncommon for its day, coupled with the four-sensor autofocus system that could continuously track not only horizontally but vertically and diagonally—even when an object came towards the camera. The autofocus system could focus at light levels of −1 ev and up to 19 ev (at ISO 100). It also used a 14-segment light metering system, variations of it being used for many years in most Minolta cameras. It featured a 1/300 of a second x-sync flash synchronization with stepless shutter speeds from 1/12000 of a second to 30sec in Program and Aperture Priority mode.[1] A mechanical shutter this fast is still to this day{{When|date=October 2016}} uncommon. The 9xi had many other abilities, many perhaps hidden at first sight. The camera could, without any external backs like the Minolta 9000 or cards like the Minolta 8000i, bracket 3 exposures each one 1/2 a stop different (each way). It could control a wireless flash system, if Minolta's 5400xi flash or the special "wireless flash controller" was used, at speeds of 1/60 of a second (1/30 in ratio); this was remarkable technology at the time.{{According to whom|date=October 2016}} The 9xi was also capable of detecting if the photographer had their eye placed against the viewfinder; it was named "eye-start", and in essence, enabled the camera to start checking exposure and focus when the user either had their hand on the grip and/or when they looked through the viewfinder. This, in theory, allowed users to take a photo more quickly. CriticismThe 9xi was and is criticized for many design choices. One was that it used the "creative cards" system, cards adding cost and being impractical for the camera's intended market. These cards worked in the same way as the 8000i's had and gave the photographer more "creative techniques" when inserted into the camera. However, some functions (the "custom functions" card being the main offender) were clearly already present in the camera, and only accessible by buying the card—this was seen as an attempt to "milk" the market. Another problem was the cameras' lack of built-in flash. This was an attempt by Minolta to appeal to more professionally inclined photographers, but it also negated the camera's built-in support for the wireless flash system (a main selling point) as an additional accessory was needed—unlike on the "less professional" 7xi. The camera was also criticized for its heavily "computerized" interface, with few buttons and many vital functions only accessible behind the card door. It featured an interface with a few single buttons toggling between several crucial functions, and then using the front and back wheels to set options. While theoretically very fast to operate if properly learned, it was completely different from interfaces used on cameras before, and it has never been used since. Also, the physical interface included some arguably strange design choices, like having a large "Program reset" button as one of the few actual buttons (the target market hardly interested in that specific feature) as well as one small button deeply sunk into the body, hard to access for many users and of dubious utility. The 9xi used both the older Minolta AF lenses and the xi-series lenses. Some of the new xi lenses had a new "powerzoom" function where the zoom ring electronically zoomed the lens via a motor. This allowed for a few extra functions, such as auto-zoom and zooming effects while exposing; in practice, however, it was slower to use, drained camera batteries and prevented pre-xi camera bodies from accepting the lenses because they did not have the ability to power the zoom. The xi-series lenses was not a success, and power-zooming lenses largely disappeared from the camera market until the function reappeared in lenses marketed to videographers with modern video-shooting SLRs. The display system, while innovative with its projected information directly in the image, unfortunately, made the viewfinder darker due to the LCD overlay. The LCD elements were not lit, so it was impossible to see the LCD overlay—including focus areas—in the dark. Lastly, the 9xi lacked a real vertical grip, only having a "battery grip" extending the handgrip slightly while adding support for AA batteries. This grip completely lacked controls of any kind, even a shutter release button. The xi series is largely seen{{By whom|date=October 2016}} as a bold but failed attempt to take SLR photography in a different direction. For the following cameras, the si series, Minolta went for a much more traditional approach, culminating in their last "single-digit series" film cameras where most everything was controlled by an unusual number of separate buttons—the antithesis of the xi series. This later design was continued in the Konica Minolta and Sony era. SpecificationThe Minolta Dynax/Maxxum specifications are as follows:[1]
Specifications and accessories are based on the latest information available at the time of printing and are subject to change without notice.{{Citation needed|date=October 2016}} References1. ^1 Minolta Maxxum Dynax Instruction Manual {{Minolta Dynax/Maxxum SLR film cameras}}{{Minolta}} 3 : 135 film cameras|Minolta A-mount cameras|Products introduced in 1992 |
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