Tuesday, February 1, 2011

Canon EOS-1 d Mark IV Review

The Canon EOS 1 D Mark IV is the fifth generation of the speed range of Canon professional DSLRs. It retains the form factor of the original two-handle, 4MP EOS-1 d launched in September 2001 (the same building on integrated grip of film-era EOS-1N RS, also the first to offer 10 fps shooting, albeit without AF between shots). And it is this consistency of design, which extends the model AF and much of the layout of the control, which helps to explain the name-the Mark IV really is the current point in an evolutionary process, rather than a completely separate model.However, 1 D series cameras more than before, the 1 d Mark IV has a lot to prove. Whereas, in the past, Canon's flagship models have been a fairly safe bet, autofocus problems with the 1 d Mark III have cast a shadow over the range. These problems, which appear to come from a combination of manufacturing error, increased complexity of AF customization and the AF sensor occasionally being overwhelmed in bright conditions, have become famous.These issues, combined with the arrival of the Nikon D3 that offered for the first time, an equal level of sophistication of AF, is called into question Canon long-held position as AF front-runner. However, a combination of engineering revisions and user education have meant that many shooters have been able to use the camera without problems-Canon admits there have been problems, but the woes that were so widely reported early in the lifecycle of the camera are still hardly be affecting nearly as many users as might suggest the reputation of the internet.Canon is clearly hoping to dispel the doubts still lingering after the deal III (D) 1 ' by introducing a new AF system. Although the 45 AF points are arranged in a layout that dates back to 1998 's EOS 3, 1 d Mark IV uses a totally new AF sensor with 39 cross-type points that are sensitive to both vertical and horizontal axis. The method of selection of point AF also has been revised for the automatic selection with subject to verification through the new system of IA-Servo II for manual selection.The 1 d Mark IV retains its predecessors 1.3 x Crop, APS-H sensor size, but this time increases its pixel count for a whopping 16MP. This may not seem like many in the era of 25MP full-frame DSLRS and 14MP compacts, but it is much the Mark IV still has the ability to shoot at 10 frames per second. If you consider that this is almost the same resolution as offered by the latest generation of camera Canon targeted study, the 1Ds Mark II, but with the ability to shoot twice as fast, then you start to appreciate what this camera is promising to do.The EOS-1 D Mark IV is the series of 1 D-count of pixels taller, with more than 50% photosites creating a 26% increase in resolution than the previous model. Unfortunately, the release of the EOS-1 d Mark III coincided with one of the busiest periods in dpreview's history (including an office move and studio, staff recruitment, training and more consumer level DSLR launches than ever), this means that even if a lot of work has been done and thousands of sample shots were taken, our review of the camera has never been completed.ModelContinuous high (JPEG) LCD monitor
* When using a UDMA mode 6 CF

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