Some options can only be set via direct dialling keys. 
Large (largest in its class), bright, precise viewfinder. Excellent processing (exception: interface covers). High speed for deceleration-free working. Good image quality at very high resolution, but requires good lenses. From the viewfinder to the autofocus to the features and the image sensor, Canon has reworked everything that makes such a camera. Canon has put similar functionality into its new EOS-1DX, but the revised menu system makes it much clearer what each option controls.The EOS 7D was Canon’s impressive return to the top of the APS-C DSLR range, which is aimed not so much at beginners but rather at die-hard amateur photographers and professionals. These options are also found in the EOS-1D Mark IV and EOS-1Ds Mark III, but they are not available in the EOS 5D mark II. These options are found in the custom menu, AI Servo tracking sensitivity (C.Fn III-1) and AI Servo AF tracking method (C.Fn III-3) and they are designed to avoid things such as the camera focusing on a post or spectators when panning around a stadium following athletes etc. The EOS 7D also has more advanced AF customisation options that allow the photographer to specify how quickly the system adjusts to changes in subject distance. However, unlike the Auto-select 19-point AF option in AI Servo mode, the surrounding AF points do not illuminate when they are active. In AF point expansion mode the photographer selects the AF point manually, but when tracking moving subjects the 7D may also use the surrounding AF points to achieve focus. Spot AF mode is the same as single-point AF, but the points are smaller and this allows the photographer to be more precise about the area for focusing. Two further AF point selection modes can be added to the default list via Custom Function III-6 enables to additional AF selection modes: Spot AF and AF point expansion. This makes it easier to see if the camera is tracking the correct subject or not. Helpfully, when Custom Function III-10 is enabled and one of these automatic AF selection modes selected, the active AF point(s) illuminate. When AI Servo focus mode is in use with Auto-select 19-point AF mode selected the photographer can select the starting AF point, but the camera tracks the subject as it moves. This is a good choice with moving subjects that are tricky to follow with a single AF point. In Zone AF mode, the 19 AF points are divided into five zones and the photographer chooses which of these to use. The downside of Auto-select 19-point AF is that it tends to target the nearest object. The first enabled the photographer to select the AF point, while Auto-select 19-point AF leaves the decision to the camera. The first and last of these are standard options similar to those found on most other SLRs. In total the 7D has five ways of selecting the AF point, but there are 3 in the default setting: Single-point AF, Zone AF and Auto-select 19-point AF. The 5D MKII has nine autofocus points, but only one is the more accurate cross-type sensor, against the 7D's 19. Interestingly, the 7D's autofocus system is superior to the Canon 5D MKII's. It has 19 cross-type focus sensors and in our tests it was only limited only by the speed of the lens' focus motor. Responsiveness is helped by the 7D's excellent focusing system. A 400mm lens on a 5D MKII, for instance, will be a 640mm lens on the 7D, getting you closer to your subjects. 
#CANON 7D REVIEW SCREEN PLUS#
The smaller sensor hides another plus for sports and nature photographers – the 1.6x focal length magnification factor means every lens you attach gains a little distance. It's so responsive, in fact, that there's a second continuous mode that shoots at a more manageable 3.5fps. There is no shutter lag making it very responsive. That makes it an incredibly good wildlife camera.
0 kommentar(er)
