"Bulb Mode or Bulb Setting"


What is the Bulb Mode?

BULB mode (or BULB setting) is a shutter speed setting that gives you complete manual control of the duration of your shutter speed. Most often it’s used for shutter speeds of more than 30 seconds. Please refer to your instruction manual on how to set BULB mode. For most DSLRs, you first have to be in manual (M) mode to set BULB. Once in manual mode, dial down your shutter speed all the way to 30 seconds. After 30 seconds, dial it down once more and you’ll find BULB.

In most cameras, BULB works by pressing and holding the shutter release until you’ve had the the desired shutter time (or when you finger gets tired!), then let go to close the shutter. You can image that if you want a 5 minute exposure, you’ll need to find another way.


How To? See this





When to use BULB mode?


The most obvious reason to use BULB mode is for exposures of more than 30 seconds like shooting night skies to get the star trails or dramatic moving clouds.




But it doesn’t always have to be for exposures of more than 30 seconds. It could just be for total control of when the shutter opens and closes. Great examples of this are shooting fireworks. The timing needs to be just right to get the best looking “bangs” and “poofs”



I had the pleasure once to witness a lighting storm at the cottage one summer evening. Out came the tripod! I used BULB mode, off course. I would open the shutter and once the lightning would strike, I would close it.
Another time to use BULB mode is if you’re light painting. Open when you start, close when you’re done.


see this....
Light Painting



There are surely more ways to fully exploit BULB mode. Your only limit is your imagination!

CASE STUDY


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Should you buy a DSLR or Point and Shoot Digital Camera?


Siti Noor Photo has registered a short course on photography and she has decided to purchase a digital camera for the course. She already has the Point and Shoot Digital camera and now she is in dilemma whether she should buy the Digital Single‐ Lens Reflex (DSLR) camera. Followings is her thought
“I’m using a compact point and shoot digital camera and i would like to ask it is worth it to upgrade to a DSLR camera? How huge a difference do DSLR cameras make compared to compact point and shoot digital camera? What matters the most when buying a digital camera? Is it the image quality, the brand name or the features offered by the camera? .... Oh friends… please assist me on this…”

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After go through the case study ...... we find the issues that
1. should buy the DSLR or not? [already have Point and shoot digital camera]
2. Difference DSLR cameras compared to compact point and shoot digital camera?
3. What matter ??
  • image quality?
  • brand name
  • features offered?

SLR Cameras for Beginners

After doing some research about this problem..
What should i Say???

1st: answer is YES... she should buy the DSLR n mayb for BEGINNER.. just try to buy the simple one.. mybe for BEGINNER to use DSLR
click here to et more info...
Top 10 Digital SLR Cameras for Beginners - 2010


2nd :Why??
For me.. She already has the Point and Shoot Digital camera.. so.. try to buy a new one.. DLSR..yeahh..
This point n some example question n answer that i found


Q: Do you need a camera which responds very quickly?
A: If you’re into action photography, or are simply frustrated by any delay between pressing the button and your picture being taken, then you should seriously consider a DSLR. There are a handful of unusually quick compacts or superzooms, but generally speaking a DSLR will startup and respond much quicker than a compact, not to mention offer superior continuous shooting capabilities. Auto-focusing on DSLRs is also normally quicker, although this is greatly influenced by the type of lens you fit, so if you’re serious about shooting wildlife, sports – or even just fast-moving kids – then consider upgrading the supplied ‘kit’ lens to a quicker model. Note some compacts like the Canon PowerShot SX1 IS and Sony Cyber-shot HX1 now offer fast continuous shooting, but normally with some restrictions such as a limited number of frames or locked focusing during the sequence - so again if action's your thing, a DSLR remains the best bet.

Winner: DSLR (although you may need to upgrade the kit lens for the quickest focusing)


Q: Do you like composing photos using the color screen?
A: Composing photos with a nice big colour screen is one of the joys of digital photography, but sadly it’s something which traditional DSLRs find tricky; indeed until recently it wasn't even possible at all. Most new DSLRs are however being equipped with Live View facilities which allow them to compose using their main colour screen, but there are compromises. If the main sensor is used for Live View, the mirror has to get out the way and the shutter open first, causing delay and noise. Additionally, this then bypasses the AF system of most DSLRs, forcing them to either temporarily flip the mirror down again to take a reading, or employ a slower contrast-based AF system. So composing with the screen on a DSLR is possible, but there are compromises and it's not as slick or smooth an operation as using a compact or superzoom. For an example of a traditional DSLR Live View system, see our Nikon D5000 and Canon EOS 500D / T1i reviews, while for a quicker but less accurate approach, see our Sony Alpha A330 and Alpha A380 reviews.

As for DSLRs without Live View, you'll need to press your eye up to the traditional optical viewfinder to compose your shot. In practice a DSLR viewfinder actually allows you to check the focusing much better than a colour screen, but if you want the smoothest experience when composing with the screen, you’ll be better-off buying a compact or super-zoom.

Winner: Compact or Superzoom (All but the cheapest new DSLRs offer Live View facilities, but involve compromises)

Q: How important is taking photos in low light?
A: DSLRs have physically much larger sensors than most compacts or superzooms, which allows them to be more sensitive to light. This in turn means much better picture quality at higher sensitivities (the bigger ISO numbers) whether you’re shooting under low light conditions or with the fastest shutter speeds to freeze action. This is a key advantage of DSLRs and for an example of what happens to the picture quality of a compact and a DSLR as you increase the sensitivity, see our Canon PowerShot G10 results - and remember this is not an isolated case. So if decent quality at high sensitivities is important to you, go for a DSLR every time. Note: recent Micro Four Thirds models are an interesting alternative as they squeeze a DSLR-sized sensor into a relatively compact body - the smallest ones are the Olympus E-P1 and Panasonic GF1.
Winner: DSLR (or Micro Four Thirds) by a mile

Q: Are you unwilling to clean your camera or images for dust?
A: The ability to swap lenses is a key advantage of DSLRs, but equally their Achilles Heel as dust particles can settle in front of the sensor and cause tiny dark marks on your photos. Many DSLRs now boast anti-dust facilities (and of them all, the Olympus SSWF is the best), but in our experience none have proven 100% infallible.

The bottom line is dust will affect every DSLR owner at some point, so you’d better get used to dealing with it – either by retouching your existing photos, or using a blower to physically dislodge particles; see our anti-dust guide. In contrast, compacts and superzoom cameras are closed devices and virtually impervious to dust getting inside (although in some cases it can eventually make its way in through the lens mechanism). Note DSLR owners can reduce the risk of dust by rarely changing lenses, and this is where superzoom lenses like the Nikkor DX 18-200mm and Canon EF-S 18-200mm can prove a very practical option.

Winner: Compact or Superzoom (although if you rarely swap lenses on a DSLR, the risk is minimised)

want more?.. just click here
click here to get more about DSLR and Point and Shoot Digital Camera?


ANOTHER REASON about advantages and disadvantages

Point and Shoot Digital Camera

ADVANTAGES

DISADVANTAGES

Size

Quality

Weight

Downside of a large

Fixed lens

Adaptability

Massive

Limited Control

Price

Shooting in the dark


Inability to capture wide-angle shots











DSLR

ADVANTAGES

DISADVANTAGES / DOWNSIDE / WEEKNESS

Better image quality

High price tag

Better sensitivity to light

Complexity

Shutter and focus speeds

Ongoing maintenance

You see what you shoot

Weight and size

Flexible control

Noise

Better investment


Ability to use different lenses


Full control over the depth of field


Weather sealing


Solid construction



Want more click HERE

3rd: if you want to buy DSLR camera.. try to read this


Choosing the Best DSLR Camera

Take a look at those factors that will help you decide which is the best DSLR camera for the money that you are spending on it. All the different features that you need to look out for in a camera to indulge in your interest in photography are listed out below.

Need of a Camera
One of the most important factors that will make your decision for you is what you are going to use the camera for. This is also probably the question that the salesperson at the store is going to ask you. Answer this question by figuring out what kind of photography you want to indulge in. Do you want to buy a camera to shoot pictures while going about life or do you want to specialize in sports or wildlife photography? Do not answer this question with what you would want to do in your fantasy land but anchor the answer in reality. The purpose of buying a camera is the best way to zero in on the best DSLR camera.
Cost of the Camera
Most of us have a fixed budget when we go out to buy a camera. This will be an important deciding factor when it comes to buying a camera. The price range where DSLRs are concerned is quite wide with basic models available for as less as USD 400 and going up to thousands of dollars. Setting a budget will ensure that you do not get confused with the variety you have at your hand. Remember that your budget will also have to include the cost of lenses (in case you are planning to upgrade them), memory cards, camera bag, batteries (a rechargeable battery is a must have), and if the company offers an option for the same, then extended warranty for the camera. The best DSLR camera you want and can afford will have to include all these costs.
Tech Spec of the Camera
Camera manufacturers often overemphasize the number of megapixels a camera has. While important this is not the most important feature. If you have the concept of megapixels explained to you, you will realize that higher megapixels does not necessarily mean that the camera quality is better. A good resolution is definitely a must but high number of megapixels are needed only if you need to print huge sized images. Another important factor to keep in mind is the image sensor size. The bigger your sensor size, the more the number of pixels it can accommodate bettering image quality. But then again the need for this depends on the use you are going to put the camera to. If you are looking at buying the best DSLR camera for sports photography, then look for one that has a very high shutter speed. Similarly a camera with burst mode will enable you to shoot a series of images by just pressing down on the shutter release. Image stabilization or anti-shake as the feature is better known is also an important feature. Other considerations are the range of ISO settings, the LCD size so that you can view the images you click, and the flash the camera provides. While cameras for professionals do not have a built in flash, most beginner level DSLRs for digital photography come with a built in flash.

These were some of the important factors to consider while choosing the best DSLR camera for your use. Other factors to consider are the size of the camera as these cameras are not as light as point and shoot ones so if you are looking for a compact size, you will have to look around as DSLRs are generally weighty. If this is not your first DSLR camera, then check the previous gear you have and decide on your upgrade accordingly. If you had an SLR previously there is a possibility that the lenses you have are compatible with the DSLR you want to buy. The same can be true for a memory card which may be compatible with both DSLRs and point and shoot cameras. Also consider the possibility of a future upgrade as this may be something that you need to keep in mind.

Some of the best DSLR cameras available in the market today are the Canon EOS Digital Rebel XSi Digital SLR Camera, Sony Alpha DSLR-A300 Digital SLR Camera, Olympus Evolt E-510 Digital SLR Camera, Canon EOS 40D Digital SLR, and Olympus E3 Digital SLR Camera. Most of these cameras are also the best DSLR cameras under USD 1000. These were just some of the factors to keep in mind while choosing the best DSLR for your needs. You can also take a look at the different charts of digital camera comparison available online to help make your choice. At the end of the day the final choice can be made only once you have taken a look at the different models for yourself.


(Snap Using My Point and Shoot Digital Camera BenQ 10.0 Megapixel
+ Editing via Photoshop CS3)


update part -->
perbincangan yang melibatkan rakan2 kelas dan Prof Z. hasil perbincangan akhir, kami telah simpulkan bahawa SITI perlu bertukar dari SDR ke DSLR kerana DSLR melebihi SDR dari beberapa aspek utama iaitu :

i) Quality of Image
ii) Tangible lense
iii) Depth of field (greater)
iv) Composition (upgrade composition).



Thank you for ur reading...


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