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Showing posts with label ISO or ASA. Show all posts
Showing posts with label ISO or ASA. Show all posts

Wednesday, September 28, 2011

Profesional Cameras In Your Pocket With Sony NEX-7

Sony has announced the much leaked NEX-7 enthusiast-targeted mirrorless interchangeable lens camera. It packs a 24MP APS-C CMOS sensor and 2.4M dot OLED electronic viewfinder into its magnesium alloy body and yet still finds room for a pop-up flash and Alpha hot shoe. This unique combination of sensor and processor assures ultra-rapid shooting responses, plus flawless image quality with ultra-low noise when shooting still images or Full HD video. Extending from ISO 100-16000, the ultra-high sensitivity range makes it easy to capture clean, low-noise images in dimly lit interiors or at dusk. Responses are accelerated further by a shutter release lag of just 0.02 seconds – the fastest of any interchangeable lens digital camera in the world. Quick, precise AF is enhanced by new Object Tracking that keeps accurate focus lock on a selected target, even when it’s moving in the frame. The NEX-7 offers quick, easy control over creative settings via an intuitive new TRINAVI control. Two control dials on the top of the camera are complemented by a control wheel. 




Pushing the navigation button cycles quickly through various shooting modes, allowing enthusiasts to make custom adjustments and control images with the flexibility of a DSLR camera. The NEX-7 uses a new shutter arrangement, with an (optional) electronic first curtain. In other words, the camera no longer has to close the shutter then open it again to start the exposure, and according to Sony this decreases shutter lag from 100ms to just 20ms. This isn't completely new technology - Canon's live view capable DSLRs have been using it since the EOS 40D of 2007 - but it's very welcome to see it implemented in this type of camera. 


Further indication, if any were needed, of the NEX-7's serious intentions is provided by the co-announced Carl Zeiss-branded E 24mm F1.8 lens (also known as the SEL24F18Z). This offers a field of view equivalent to a 35mm lens on full frame, and places the NEX-7 squarely up against the likes of the Fujifilm FinePix X100 (with its fixed 23mm F2 lens), as well as the E-P3. The NEX-7 will also be sold with a black version of the standard E 18-55mm F3.5-5.6 OSS kit zoom. The NEX-7 will be available in November for $1350 with a 18-55mm kit lens or $1200 for the body alone. Meanwhile the NEX-5N will be available in September with the same kit lens for $700, or on its own for $600.







Basic Specifications
Resolution: 24.30 Megapixels
Kit Lens: 3.00x zoom
18-55mm
(27-83mm eq.)
Viewfinder: LCD
LCD Size: 3.0 inch
ISO: 100-16000
Shutter: 30-1/4000
Max Aperture: 3.5
Dimensions: 4.7 x 2.6 x 1.7 in.
(120 x 67 x 43 mm)
Weight: 14.6 oz (415 g)
MSRP: $1,350
Availability: 11/2011



The default assignments for the three Tri-Navi dials change depending on the shooting mode you're in. Here's a table listing assignments for each dial in each major camera mode:
Sony NEX-7 Default Tri-Navi Dial Assignments
Shooting Mode
Left Dial
Right Dial
Rear Dial
iAuto No Function No Function No Function
Program Auto Program Shift Exposure Compensation ISO
Aperture Priority Aperture Value Exposure Compensation ISO
Shutter Priority Shutter Speed Exposure Compensation ISO
Manual Shutter Speed Aperture Value ISO
3D Sweep Panorama Right/Left direction Exposure Compensation ? (prototype bug)
2D Sweep Panorama Right/Left-Up/Down direction Exposure Compensation ? (prototype bug)
Anti Motion Blur No Function Exposure Compensation No Function
Here are the dial assignments for each of the optional settings groups:
Sony NEX-7 Optional Tri-Navi Dial Assignments
Settings Group
Left Dial
Right Dial
Rear Dial
Focus Settings Focus Area Select Left/Right focus position Up/Down focus position
White Balance White Balance Preset A/B color adjust G/M color adjust
D-Range (DRO) Level (1-5) Exposure Compensation DRO Off/DRO/HDR
D-Range (HDR) EV Spread Exposure Compensation DRO Off/DRO/HDR
Creative Style Creative Style Selection Amount (+/-3) of parameter selected by rear dial Sharpness, Saturation, Contrast
Picture Effects No Function Select among options for current Picture Effect Choose Picture Effect (Miniature, Partial Color, etc.)
Custom (see below) (see below) (see below)
In Custom mode, you can assign any of 9 functions plus "Not Set" to any of the three dials. The only restriction is that you can't assign the same function to more than one dial. The nine functions that can be assigned to the control dials via the Custom option are:


Sony NEX-7 specification highlights

  • All-new 24MP APS-C CMOS sensor (shared with the SLT-A7 and A657)
  • ISO 100-16000
  • Built-in 2.4M dot OLED EVF with eye sensor
  • Electronic first-curtain shutter (cuts response time from 100ms to 20ms)
  • 'AVCHD Progressive' 1080p60 HD movie recording with built-in stereo mic
  • Tilting rear screen
  • Three-dial user interface
  • Built in flash and Alpha hotshoe
  • Infra-red remote control receiver
  • Microphone input socket
  • Exposure Compensation
  • Autofocus Mode
  • Metering Mode (pattern)
  • White balance preset (Auto, Daylight, etc.)
  • DRO/Auto HDR mode (Off/DRO/HDR, but also Off/ DRO Level 1-5, Auto HDR/ HDR EV spread 1-6)
  • Creative Style preset
  • Picture Effect
  • Quality (JPEG Fine/JPEG Standard/RAW/JPEG+RAW)
  • "Not Set (in case you don't want to assign any function to that dial)
    Bottom line, the NEX-7's new Tri-Navi interface offers more flexibility and configurability than anything we've seen to date on a Compact System Camera.




    The Sony NEX-7 is a Compact System Camera unlike any other yet produced. Up to now there has broadly been two types of CSC: DSLR style and compact camera style, the key difference between them apart from shape, being the inclusion of a built-in electronic viewfinder (EVF) in the former. The NEX-7 is a hybrid of the two styles. It takes the compact styling of the rest of the NEX range as a starting point, but blows it up in size and adds an EVF. In outward appearance its styling and sober black-only finish is reminiscent of M series Leicas and immediately conveys that this is a serious camera aimed at a different and more advanced audience that CSCs have targeted thus far. 

    Alpha Mount Adaptor
    One of the appeals of the NEX system is that its shallow body enables the attachment of adaptors for pretty much any lens mount. Sony's new LA-EA2 Alpha mount adaptor features its own translucent mirror and AF module so that any Alpha lenses attached to it behave like they do on Alpha cameras, with the superior phase detection AF. But with the right mount you can fit all kinds of lenses, both current and obsolete, and it is envisaged that the NEX-7 will be popular with owners of Leica M series lenses in particular.
    The NEX-7 we handled is an early pre-production model and we were not allowed to put an SD card in it to assess to image quality, as there's still some tweaking to be done to the firmware, but from a handling and usability perspective the NEX-7 is impressive. Its discreet form makes it an ideal street photographer's camera. The tilting 921k dot LCD screen facilitates candid shooting but the inclusion of that superb EVF, which we have already seen on the Alpha 77, makes it a great option for those who would never consider buying a camera without a viewfinder. 



    Adapter For Addition Lens
    Adapter with addition Lens

    Sony NEX-7 With Tele Lens

    Tuesday, August 16, 2011

    4 Rules about photography





    4 Rules About 
    Photography
    Before we plunge into the world of photography more deeply, we should know the basic of these photography techniques. Among them is that we must understand the rules about photography.
    Here I will describe some rules in photography, including: Composition Line, Geometric Shapes, The Rule of Thirds, Framing Images.



    1. Composition Line
    The composition of the POI is how we put in the frame so that the concept of balance and simplicity going on there.

    Line has an important role as one element supporting the theory of composition. Lines meant here who could have been formed from the angle and position the frame so that the line formed from actual objects, like trees, railroads, power lines and other objects that make up the line.

    Lines can also provide an additional effect on the visual and emotional impact of the picture because:

    - Additional lines can display a dynamic impression in photos
    - A line of photo lovers invited to direct his attention to the area (POI)
    - Lines can also create depth (depth) in a composition field.
    - A line we can use as well as directions and orientation in the image, etc.

    In addition, understand the theory of composition is important because such lines could invite a response from the audience of how photographs They feel and mood from conducting your photos, which then becomes a challenge, how we "use" and "use" lines to draw the attention of connoisseur photos.

    For this type of line we can reply "use" in adding the composition of our picture frames include :

    - Leading lines,

    - Vertical lines, 

    - Horizontal lines,

    - Diagonal lines,

    - Curve lines,

    - Perspective lines.
    composition of several lines above each can cause different effects in the cause and evoke the mood for photos viewers.

    2. Geometric Shapes


    With the position of the key aspects of the landscape at the corner of geometric shapes you can help create a balanced composition. Probably the most common and easiest way to do this is to use the 'triangle' forms between objects in an image with three objects in the frame is positioned with one for each side and one center. Geometric shapes used in this way is one technique to get a balance in the shooting to lead the eye into the photo shooting (in the same way with diagonal lines above rules).




    3. The Rule of Thirds

    The Rule of Thirds will come out more often than others in all types of photography and is one of the first regulation of the composition is taught to students of photography. Although it sometimes feels a bit cliche this may also be a very effective technique in landscapes (although keep in mind that the breaking (and other rules) can also produce images that are dramatic and exciting). Key points in the landscape position is on the point of intersection between an imaginary 'third' dots in the picture and you will help provide balance to the images that you shoot an image focal point and help to really grab attention.

    4. Framing Images

    Many of us often put the photos in a frame, both frames as a means of displaying images (such as picture frames for wall hung, placed on a table / nightstand or other places), as well as limiting virtual frame image area with the photo paper / other print media .

    The benefit of framing the image include:
    1. Giving context to the photo
    2. Adding a message of the photo
    3. Gives the impression of more than photos
    4. Creating a point of view of photo
    5. Attracting viewers of your photos.

    Frame for a photograph can be obtained from any and all objects, including tree branches, mirror, shot through the window, from behind the fence, behind the foliage, behind the gate, even from the person's head and shoulders, and others.

    The above rule is not a rule that must be applied in photography. Rules can be used as a material consideration in taking a picture. For me personally a good outcome is determined from the imagination and creativity of each individual. Hopefully this article helps: D

    Thursday, August 11, 2011

    Technical Photography & Functions

    Photography is not everything about the camera. It is said that photography is the art of playing with light. Without light, the photography was impossible. Produces a good picture, must have a strong vision in terms of 'seeing'. Attention to the light, composition and moment are the things that are important to consider in making images that can be categorized as 'good'.

    However, it seems impossible to produce a picture like that if you do not know and understand each of the technical foundation of photography. Photography is not everything about the camera, but the camera is a tool to deliver our vision. So, if need to know and understand how the camera works.

    The main task of the camera is set the intensity of incoming light and at the end of the film / sensor (hereafter I call medium). If the camera allows too much light entering the medium will be burned (overexposed). And vice versa. How to keep the incoming light is not excessive and no less, or in other words 'pass'. Here I describe the one-one.

    Aperture

    Or, sometimes called a diaphragm or aperture lens is functioning to regulate how much the lens opens. This function is more precisely located on the lens. Logically, the larger the opening, the more light will enter. Like a water faucet. The bigger we open the faucet, the more water will come out.


    Writing the correct aperture is f / x. So when it is said his Aperture value is 5.6, then writing the truth is f/5.6. So do not be confused when someone said that the lens aperture 2.8 aperture greater than 5.6. Because if it's true mathematical writing, right? (F/2.8> f/5.6), but most of us are lazy to say f/2.8 or f/5.6, because we are simple people anyway ...


    Side Effects of Aperture

    Like cough medicine that has side effects, as well as the aperture. The side effects are greater the aperture, the smaller area of ​​focus. And vice versa. Focus area is commonly known as the DOF (Depth of Field).

    Shutter Speed

    Or commonly referred to as speed or shutter speed on duty to regulate how long the mirror open and closed again to limit how much light will enter. Like the theory of the tap, when we open the tap too long, then the reservoir container so that excess water was going to be more likely to smear out. If in the case of photography, the medium will burn.


    Writing the correct shutter speed is 1 / x. So when it is said that a photo menggunkanan speed 60, then the true authorship is 1 / 60 sec. So do not be confused to say that the speed 60 faster than 30. because writing is so mathematically?


    Side Effect of Shutter Speed

    Like dating that have side effects, such as hard glance woman / other man, as well as the shutter speed. The faster the shutter speed, it will be increasingly seen silent picture (freeze). And conversely, if the speed is too slow image will look blurry because the movement is too fast, so objects appear to move very fast.

    ISO or ASA

    Is the sensitivity of the medium in receiving light. The higher the value, the more levels of sensitivity. That is, if we change the ISO or ASA value becomes higher, while the aperture and speednya not changed, then the medium will receive more light.


    Side Effects of ISO or ASA

    ISO is the sensitivity of the sensor (medium), while the ASA is the sensitivity of the film (medium), so the difference is only dimediumnya only. But the same logic. Unless the side effects. Where when using a high ASA film, the picture will look grainy (in the form of small dots, but a lot). While the use of high ISO will generate noise (such as a worm, but a lot).