Minggu, 27 April 2014

Canon 7D vs. Nikon D300?

Q. which one do you prefer the most and why ?
is 17MP really matter vs. 12 MP.

A. Canon EOS 7D 18 MP CMOS Digital SLR Camera with 3-inch LCD and 28-135mm f/3.5-5.6 IS USM Standard Zoom Lens.
http://www.amazon.com/Canon-EOS-7D-28-135mm-Standard/dp/B002NEGTU6/ref=sr_1_2?ie=UTF8&s=electronics&qid=1260071382&sr=1-2&tag=commentglitte-20&linkCode=ur2&camp=1789&creative=9325

By any measure, the new Canon EOS 7D is a worthy successor to the EOS line of APS-C sensor DSLRs. I believe it finally levels the playing field for many Canon shooters envious of Nikon DXXX shooters.

I am an advanced amateur photographer who has owned the 20D for the last 5 years and will use it as a backup body now. With each Canon announcement of a successor to the XXD line of DSLRs, I was tempted to upgrade but resisted each time up until now. This was partly due to budgetary constraints, but I felt mostly that each new model was only an evolutionary modification rather than a revolutionary one. If there's one thing to keep in mind in this fast-moving world of DSLR photography, then it is that DSLR bodies come and go (and depreciate quickly in value, like most electronic goods) but excellent glass will nearly always be sound investments (high-quality lenses maintained in good condition may appreciate in value).

The 7D appears to be a game-changer for many Canon photo enthusiasts like myself who prefer or can only afford to shoot with an APS-C sensor body. Nikon shooters have had an excellent choice of a crop sensor body in the D100/D200/D300 (now D300s), but for Canon shooters, the top-of-the-line equivalent was trailing in the feature set department. Now most of the features that were absent in the Canon XXD body as compared with their main rival are present in the 7D.

Notable features:
- 18 MP APS-C CMOS sensor
- Dual DIGIC 4 processors (a first for a prosumer Canon DSLR)
- Maximum 8 fps frame rate
- Maximum ISO 12,800
- VF with 100% coverage and 1.0x magnification (a first for a Canon DSLR)
- 19-pt AF (all cross-type with f/5.6 or faster lenses)
- 63-zone metering system (measures focus, color, and luminance)
- On-demand grid lines in VF (a first for any Canon DSLR)
- Built-in electronic leveler in 2 planes (a first for any Canon DSLR)
- Built-in wireless flash trigger (a first for any Canon DSLR)
- HD video in 1080p (30/25/24 fps) and 720p (60/50 fps)

I have had the camera for over a week now. My initial impressions are mostly positive thus far. Additional thoughts in the form of updates will be forthcoming once I get an opportunity to capture more images under various conditions (indoors/low light, outdoors, action, etc.) and get my act together to type it up. So far, I believe that the IQ, VF, LCD monitor, and handling are all vast improvements over the 20D. Taking photos at high ISOs and achieving low noise captures is all the rage these days. I feel that random photos I've taken at ISO settings up to 1600 are completely usuable. In the past, I felt comfortable shooting with my 20D mostly south of ISO 400/800. I shall pixel peep some more and shoot at even higher ISOs to see where the happy medium for me shooting with the 7D lies. Tolerance for noise, I feel, is very subjective.


Limitations:
There is a steep learning curve with this camera. The 7D is packed with new features that I have yet to maximize to my advantage. Coming from a 20D rather than a more recent line of XXD body makes things even more challenging. A careful read of the user's manual is critical.

If ultimately low noise captures at high ISOs is most important to you, then a FF sensor body is the way to go rather than an APS-C sensor body. A larger pixel pitch that captures more light (at the expense of lower resolution) will help maintain low noise levels at very high ISOs. This is a key reason why the small-body FFs, such as the Nikon D700, Canon 5D/5DMkII, and Sony A900/A850, are so revered. Any of those cameras will likely outperform the 7D at high ISOs in terms of low noise captures. Moreover, they provide less DoF than APS-Cs at equivalent fields of view. However, the obvious downsides are their cost and need for big, heavy, and expensive glass.

The 7D should not be viewed as an HD camcorder replacement. Although useful to have and with slightly more shooting options as compared with the version currently offered in the 5DMkII, video capture in the 7D still suffers from lack of continuous AF. Unfortunately, the jello phenomenon (from rolling shutter) and monoaural sound (external stereo mic input is available, though) make for a less than harmonious package.

*** Please be aware that some information about potential problems with the initial batch of 7D bodies has surfaced on photography forums and elsewhere (including here on Amazon). They include difficulties with the new AF system (particularly in AI servo mode, though some users have had trouble in any AF mode) resulting in OOF photos, as well as ghosting (residual preceding images captured in subsequent images) under certain sho


Canon 7D good for filmmaking?
Q. I am an aspiring filmamker and I need a good camera that will last and is simple to learn to work. What do you guys think about the Canon 7D?

A. the cannon 7D is an excelent choice but i would prefer the 5D here is the specs for both - 7D :
Imaging

Imaging Sensor/Effective Pixels
CMOS/ 18 MP (APS-C)

Effective Sensor Size
22.3 x 14.9 mm

A/D Resolution Power
14-bit

Colour Filter Size
RGB Primary Colours

35mm Focal Length Equivalent
1.6x

Image Recording

Medium
CF Type I & II

Image Size

Large / Fine
5,184 x 3,456 / Approx 17.9MB

Middle / Fine
3,456 x 2,304 / Approx 8.0MB

Small / Fine
2,592 x 1,728 / Approx 14.5MB

RAW
5,184 x 3,456 / Approx 17.9MB

mRAW
3,888 x 2,592 / Approx 10.1MB

sRAW
2,592 x 1,728 / Approx 4.5MB

Movie Shooting

1920 x 1080
Available in frame rates 30 / 25 / 24 fps

1280 x 720
Available in frame rates 60 / 50 fps

640 x 480
Available in frame rates 60 / 50 fps

Viewfinder

Coverage (vertical/horizontal)
100% coverage

Dioptric Adjustment
3 to +1 dpt

Interchangeable Focusing Screens
Fixed

Autofocus

AF Points
19

Exposure Control

Shooting Modes
9

Metering Segments
63

Metering Modes
Evaluative, Partial, Spot, Centre-weighted

ISO Speed Range
ISO 100-6400 (expandable to H: 12800) (expandable to 3200 via CF)

Exposure Compensation
Manual, AEB ±5: 1/3 or 1/2-half increments

Shutter

Shutter Speed
1/8000 sec. -30., Bulb, X-sync at 1/250 sec

Flash Control

E-TTL II Autoflash
Yes

Built-in Flash / G. No.
Provided / 12

Speed

Shooting Speed
8 fps / 90 shot max burst (JPEG), 15 (RAW)

White Balance

Settings
9

WB Bracketing
Yes

General Features

LCD Monitor
3.0 ClearView II (Approx. 920K dots)

Custom Functions/Settings
27

Start Up Time
0.1sec

Personal Functions/Settings
Yes

Integrated Cleaning System
Yes

Live View
Yes (Quick, Live & Live Face Detection AF Modes)

External Interface
Hi-Speed USB/ Video OUT/HDMI

Remote Control/Type
Yes (N3 type)

Battery
LP-E6

Chassis Material
Stainless Steel + polycarbonate with glass fibre

Dimensions (W x D x H) mm
148.2 x 110.7 x 73.5mm

Weight (excl. battery in grams)
820


5D :
Imaging

Imaging Sensor/Effective Pixels
21.1 Megapixel CMOS sensor

Effective Sensor Size
36 x 24 mm

A/D Resolution Power
14-bit

Colour Filter Size
Primary Colours

35mm Focal Length Equivalent
1x

Image Recording

Medium
CF card Types I & II (2GB or higher)

Image Size

Large / Fine
5616 x 3744 pixels; approx. 21 MB

Large / Normal
5616 x 3744 pixels; approx. 21 MB

Medium / Fine
4080 x 2720 pixels; approx. 11.1 MB

Medium / Normal
4080 x 2720 pixels; approx. 11.1 MB

Small / Fine
2784 x 1856 pixels; approx. 5.2 MB

Small / Normal
2784 x 1856 pixels; approx. 5.2 MB

RAW
5616 x 3744 / Approx 21MB

S RAW
1 - 3861 x 2574 / Approx 10MB

S RAW 2
2784 x 1856 / Approx 5.2MB

RAW & JPEG Simultaneous Recording
Yes

Viewfinder

Coverage (vertical/horizontal)
0.98

Dioptric Adjustment
3 to +1 dpt

Interchangeable Focusing Screens
Yes

Auto Focus

AF Points
9 cross type + 6 assist

Exposure Control

Shooting Modes
7 standard modes

Metering Segments
35

Metering Modes
Evaluative, Partial, Spot, Centre-weighted average

ISO Speed Range
ISO 100-6400(L1: 50, H1: 12800, H2: 25600)

Exposure Compensation
Manual, AEB ±2: - 1/3 or 1/2-stop increments

Shutter

Shutter Speed
1/8000 sec � 30, bulb, X-sync 1/200 sec.

Flash Control

E-TTL II Autoflash
Yes

Built-in Flash / Guide Number
N/A

Speed

Shooting Speed
3.9 fps

White Balance

Settings
9

WB Bracketing
Yes

General Features

LCD Monitor
3 inch

Custom Functions/Settings
25

Start Up Time
0.1 sec

Integrated Cleaning System
Yes

Live View
Yes (Quick, Live & Live face detection AF Modes)

External Interface
Hi-Speed USB/ HDMI mini/ Audio/Video OUT/ PC Terminal/ Remote control/External microphone input

Remote Control Terminal
Yes (RC-1, RC-5 compatible)

Battery
Lithium Ion LP-E6

Chassis Material
Stainless Steel

Dimensions (W x H x D) mm
152 x 113.5 x 75

Weight excl. battery (g)
810
there is a big diff in price aswell,
but for a bigginer the 7D is an excellent choice :D





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