Here are some of the key highlights and differences between Canon EOS-1D Mark IV and Nikon D3s:

1. Fast 10 frames per second operation (Nikon D3s is 9 FPS).
2. Default ISO range of 100-12800 with “boost” modes up to ISO 102400 (Nikon D3s is 200-12800 & also up to ISO 102400).
3. Full HD 1080p video recording capability (Nikon D3s is only 720p).
4. A large buffer that can handle up to 121 large JPEG images (Nikon D3s can handle 130 JPEGs @ 12.1 mp).
5. A brand new 45 point auto focus system (Nikon D3s has 51 focus points).
6. Both Canon EOS-1D Mark IV and Nikon D3s have the same 3″ size screens with 920,000 pixels
7. Canon EOS-1D Mark IV features a 16.1 megapixel CMOS sensor (Nikon D3s has a 12.1 mp CMOS sensor).
8. The sensor on Canon EOS-1D Mark IV has a 1.3x crop factor (not full frame), whereas the Nikon D3s sports a full frame sensor (FX).
9. Canon EOS-1D Mark IV is priced at $4,999.00, while Nikon D3s is priced at $5,199.95.

More info http://rebeldigitalslr.com

Popularity: 11% [?]

Nikon announced the new 12.1-megapixel D3S DSLR , a camera that can shoot HD video at 720p/24fps in Motion JPEG format, still photographs at an ISO as high as 102,400 at a full-resolution rate of 9 frames per second, and uses an FX-format (full-frame) CMOS chip, all for a suggested retail price of $5,200 USD.

Now you can find information and pre-order from Amazon

Nikon’s product page includes an HD movie made by NPPA member Bill Frakes who was using the new D3S in Australia. Look for the link under “D-Movie Production.”

Along with the D3S, Nikon today also introduced a new lens, the AF-S DX Micro 85mm f/3.4G ED VR for $529.99 USD.

More info http://rebeldigitalslr.com

Popularity: 9% [?]

The new Canon EOS 1D Mark IV Digital SLR camera. The new EOS 1D Mark IV is according to Canon a high-speed multimedia performance monster.

The new EOS 1D Mark IV camera features 1080p Full High-Definition video capture at selectable frame rates packaged in Canon’s most rugged and durable professional camera body.

Features of the Canon EOS 1D Mark IV include:

-16MP Canon CMOS sensor
- 3-inch display Dual DIGIC 4 Imaging Processors
-14-bit A/D data conversion, all at 10 frames-per-second (fps), with the widest ISO range (ISO 100-12,800 / Expansion settings of L: 50 for bright light or H1: 25,600, H2: 51,200, and H3: 102,400) Canon has produced to date

Highlight of the Canon 1D Mark IV Digital SLR is its new autofocus system that starts with 45 AF points including 39 high-precision cross-type focusing points capable of tracking fast moving athletes or wildlife accurately at speeds up to 10 frames per second.

With greater subject detection capability than ever before plus a newly redesigned AI Servo II AF predictive focusing algorithm, the Canon EOS-1D Mark IV camera sets new standards for autofocus performance among professional digital SLRs.

The Canon EOS 1D Mark IV is available for pre-order for $4,999.99  at  Amazon

Popularity: 3% [?]

Ok Let’s continue

Crop Reduction

Some lenses are designed to reduce this crop factor. While they cannot eliminate it completely, they can adjust for it.

Essentially, the lens is designed so that the back (the part that attaches to the camera) is closer to the digital SLR sensor.

Since the back of the lens is closer to the sensor, it reduces the amount that the small-sized sensor crops out of the image.

There is one big drawback to this type of lens: it won’t work with a film SLR camera. If you’re never going back to film again, then lenses like these won’t limit you one bit.

Image Stabilization (also called vibration reduction).

The stabilization helps when you are holding the camera in your hands and taking photos at slow shutter speeds.

Typically, this would result in a blurry photo, but with an image stabilization lens you can get clear shots. The stabilization corrects for the fact that the lens is shaking around.

This is especially helpful on lenses with long focal lengths (100mm or greater) since camera shake is magnified at long focal lengths.

You are going to pay a huge premium for an image-stabilized lens, but if you take a lot of photos in low-light conditions and don’t want to attach the camera to a tripod all the time, this is the way to go.

Image-stabilized lenses are NOT necessary with digital SLR cameras that include built-in anti-shake.

Superior Optics

Some lenses are designed with special optics that adjust for distortion, reduce flare and stray light from entering the lens and are designed to produce images with maximum clarity.

These lenses all come with different names

For example, Nikon used the term “ED” while Canon’s pro optics are branded with an “L”

Any one of these lenses is going to cost significantly more than a lens without the superior optics.

Internal Zoom

This really is a specialty feature, but it can make a difference. If you have a zoom lens with an external zoom, the length of the lens changes as you zoom from wide angle to telephoto.

With an internal zoom, the length of the lens is always a constant.

This is helpful for 3 reasons:

1. an internal zoom does not affect the balance of the camera. If you have your digital SLR attached to a tripod and use an external zoom, the changing length of the zoom changes the center of gravity of the camera.

2. internal zooms tend to be smoother and faster than their external counterparts.

3. external zooms can “slide”. This means that if you are pointing the camera toward the ground, the lens will zoom in unless you are holding onto the zoom ring.

The World’s Most Expensive Digital SLR Lens

Each one of these features will add to the price of your lens:

• Internal zoom
• Wide maximum aperture
• Full-time manual focus
• Superior optics
• Silent autofocus
• Image stabilization
• Long focal length
• Crop reduction
• Non-rotating front element

Hope that guide can help you.

More info visithttp://rebeldigitalslr.com

Popularity: 11% [?]

The Canon 7D is an 18-megapixel semi-pro DSLR that shoots 1080p video in 24—or 30—glorious frames per second
The 7D feels like Canon took the results of a survey they handed out to people about what they wanted in a camera and crammed ‘em all into one product targeted at semi-pros. Full HD video with manual exposure in 24, 25 or 30 frames per second, check. More rugged, weatherproof body than 5D.

Customizable buttons, including a new multifunction button. A dedicated button for switching to RAW+JPEG mode.

Electronic axis level? It has dual DIGIC IV image processors, the first model outside of the pro 1Ds line with dual image processors for fast burst shooting: 8FPS with 94-shot JPEG bursts (124 with UDMA card) or 15 RAW shots, all at full resolution with 14-bit A/D conversion.
But, it’s not full-frame: They’ve crammed 18 megapixels into an APS-C-sized sensor (like in the Rebel series or 50D, versus full-frame in the 5D) with an ISO range from 100-6400, and a Hi setting of 12,800. Canon says they’ve shortened the distance between the photodiodes in the sensor, which decreases light falloff, supposedly translating into better high ISO performance.

Video
It might just be the best video on a DSLR yet: Manual exposure from the get-go, and oh yeah, the ability to shoot 1080p video at 30, 24 or 25 frames per second. If you cut it to 720p, you can shoot up to 60FPS. Also, video is encoded using H.264 now. There’s a dedicated switch to flip from shooting stills to video that encircles a start/stop button for recording, so it’s much easier to get right to shooting video than the 5D.

Other

Focusing system has 19 cross-type points, with a new way to focus in addition to the usual full-blast autofocus vs. single-point—zones, which are clusters of points. You can also lock different default focus points for horizontal and vertical orientations, so you can turn the camera back and worth without having to repick your focus point. (Setting it up is a little confusing—even the Canon rep took a minute to make it happen.) AI servo focus is supposedly smarter, so it tracks moving objects better, and it works with a new light-source detection system that adjusts for flickering light. (We didn’t get a chance to check that out.)
The viewfinder provides 100 percent coverage, like the 1Ds, and it uses a new polymer LCD network with a different graphics overlay than the 5D—that’s a lot like what Nikon’s got in the D300, In a first for Canon, the built-in, wide-coverage flash can command other wireless flash modules.

This item is in high demand and supplies from the manufacturer are limited.If  you interest you can Pre-order HERE (body only) or with 28-135mm f/3.5-5.6 IS USM Standard Zoom Lens
You can find another model review at http://rebeldigitalslr.com

Popularity: 19% [?]

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