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

Are Megapixels Everything?


Before I get into the Pros and Cons of DSLRs vs Point and Shoot digital cameras I want to address a common misconception that I regularly hear among digital camera owners – that a cameras megapixel rating is the main thing to consider when determining a camera’s quality.


The fact is that megapixels are NOT everything. Despite point and shoot cameras now coming with up to 18 megapixels their quality level is not necessarily has good as a DSLR with only 1- or so.

The main reason for this (and there are many as we’ll see below) is that the image sensor used in point and shoot digital cameras is generally much smaller than the image sensor used in a DSLR (the difference is often as much as 25 times). This means that the pixels on a point and shoot camera have to be much smaller and (without getting too technical) collect fewer photons (ok I lied about the technicalities). The long and short of it is that because of this point and shoot cameras need to work at slower ISO levels which means that they produce ‘noisier’ (or more grainy) shots.


A lot more could be said on sensor size – but trust me, smaller sensors significantly reduce the quality of an image. I’d much rather have a camera with less megapixels and a larger image sensor than the other way around.


This is one factor that needs to be considered when choosing between a DSLR and point and shoot – but let me run through some more:


DSLRs


A quick definition - unfortunately some camera manufacturers in recent months have released cameras with the DSLR label that technically are not. For the purposes of this article I’ll define DSLR’s as cameras that have removable lenses, that have a reflex mirror which allows live optical viewing through the lens taking the image. ie DSLR’s use a mirror that allows you to see the image you’re about to shoot through the view finder – when you take the shot the mirror flips up allowing the image sensor to capture the image.


Some cameras these days are being touted as DSLRs because you have ‘through lens viewing’ but they are not true DSLR’s – (Digital, Single, Lens, Reflex). This does not necessarily make them a bad camera – but in my opinion it there is a distinction between them.





DSLR Strengths

• Image Quality - I’ve already covered this above in my discussion on megapixels and image sensors – but due to the larger size of image sensors in DSLRs which allows for larger pixel sizes – DSLRs are generally able to be used at a faster ISO which will lead to faster shutter speeds and less grain.
• Adaptability – DSLR’s ability to change lenses opens up a world of possibilities for photographers. While my point and shoot has a nice little 3x Optical Zoom (and many these days have longer ones) my DSLR can be fitted with many high quality lenses ranging from wide angle to super long focal lengths depending upon what I’m photographing (and of course my budget). Add to this a large range of other accessories (flashes, filters etc) and a DSLR can be adapted to many different situations. It should be noted that when it comes to lenses that the diversity in quality of lenses is great. Image quality is impacted greatly by the quality of the lens you use.
• Speed – DSLR’s are generally pretty fast pieces of machinery when it comes to things like start up, focussing and shutter lag.
• Optical Viewfinder – due to the reflex mirror DSLR’s are very much a what you see is what you get operation.
• large ISO range - this varies between cameras but generally DSLRs offer a wide array of ISO settings which lends itself to their flexibility in shooting in different conditions.
• Manual Controls – while many point and shoots come with the ability to shoot in manual mode, a DSLR is designed in such a way that it is assumed that the photographer using it will want to control their own settings. While they do come with good auto modes the manual controls are generally built in in such a way that they are at the photographers finger tips as they are shooting.
• Hold it’s value – some argue that a DSLR will hold it’s value longer than a point and shoot. There is probably some truth in this. DSLR models do not get updated quite as often as point and shoot models (which can be updated twice a year at times). The other factor in favor of DSLRs is that the lenses you buy for them are compatible with other camera bodies if you do choose to upgrade later on (as long as you stay with your brand). This means your investment in lenses is not a waste over the years.
• Depth of Field – one of the things I love about my DSLR is the versatility that it gives me in many areas, especially depth of field. I guess this is really an extension of it’s manual controls and ability to use a variety of lenses but a DSLR can give you depth of field that puts everything from forground to background in focus through to nice blurry backgrounds.
• Quality Optics – I hesitate to add this point as there is a large degree of difference in quality between DSLR lenses (and point and shoot cameras are always improving) but in general the lenses that you’ll find on a DSLR are superior to a point and shoot camera. DSLR lenses are larger (more glass can add to the quality) and many of them have many hours of time put into their manufacture (especially when you get into higher end lenses). I strongly advise DSLR buyers to buy the best quality lenses that they can afford. It it’s the difference between a high end lens on a medium range camera or a medium range lens on a high end camera I’d go for quality lenses every time as they add so much to photos.

DSLR Weaknesses

• Price – while they are coming down in price (especially at the lower end) DSLR’s are generally more expensive than point and shoot digital cameras. Also consider that you might want to upgrade your lens (as kit lenses are generally not of a super high quality) or you may wish to add more lenses later and that this adds to the cost of a DSLR.
• Size and Weight – the only reason I take my point and shoot out with me is on those occasions when I don’t want to lug my DSLR (and it’s lenses) around with me. DSLRs are heavy and sizable and when you add a lens or two to your kit bag you can end up with quite the load!
• Maintenance – a factor well worth considering if you’re going to use a DSLR with more than one lens is that every time you change lenses you run the risk of letting dust into your camera. Dust on an image sensor is a real annoyance as it will leave your images looking blotchy. Cleaning your image sensor is not a job for the faint hearted and most recommend that you get it done professionally (which of course costs). This is a problem that is being rectified in many new DSLRs which are being released with self cleaning sensors.
• Noise – DSLRs are generally more noisy to use than point and shoots. This will vary depending upon the lens you use but while point and shoots can be almost silent when taking a shot a DSLR will generally have a ‘clunk’ as the mechanisms inside it do their thing. I personally quite like this sound – but it’s something that is a factor for some.
• Complexity – while DSLRs are designed for manual use this of course means you need to know how to use the tools that they give you. Some friends that have bought DSLRs in the past few months have told me that they were a little overwhelmed at first by the array of settings and features. The learning curve can be quite steep. Having said this – all DSLRs have fully Automatic mode and many have the normal array of semi-auto modes that point and shoot digital cameras have.
• No live LCD – in many DSLRs the only way to frame your shot is via the optical viewfinder. Some photographers prefer to use a camera’s LCD for this task. This is another thing that is changing with more and more new DSLRs having a ‘Live View’ LCD which enables you to frame your shots without looking through the view finder