Friday, 17 June 2016

film - What is the difference between an SLR and a DSLR?



What are the differences between SLRs and DSLRs? (I know that DSLRs are Digital SLRs but are there any actual differences?)


Also, what are the advantages/disadvantages of both?



Answer



Nowadays, both terms are using interchangeably because the vast majority of SLRs in production are digital and there was not been a new model of another type of SLR in years.


SLR refers to a camera with a Single Lens and a Reflex mirror to bend the light path to the optical viewfinder for framing. A DSLR is a Digital SLR, meaning it has a digital sensor to record images.


Digital SLRs have may advantages compared to their film counter-parts. You get the digital workflow with instead previews and low usage costs. Taking thousands of images is easy with a digital. On the other hand, each roll of film costs money takes space and most be properly kept until developed (and after too).


Film SLRs have advantages and can be far more durable and resistant to extreme environments. They require much less care and batteries last for years. Some do not even need batteries to operate, although you loose metering and autofocus obviously. They are not prone to sensor-dust (or film-dust) because a new frame is used for each shot.


Advances mean that image quality greatly favors digital cameras which now have over 14 stops of dynamic-range and reach stellar ISO sensitivities as high as 204,800. With resolutions reaching 36 MP too, they can capture a tremendous amount of details.


When DSLRs had around 6 MP people would argue which one captures more details but I have not seen anyone argue about it anymore. Of course, with a film camera, it depends on the film used and the resolution is actually not a uniform grid, so highlights get more resolution and shadows less.


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