Archive for May, 2012
RAW versus JPEG. Which should I use? This is a very interesting and delicate subject involving many aspects! First of all I must say that I think that there is no doubt about the fact that a RAW file is superior – information-wise – compared to a JPEG! It is lossless, has more information per pixel (more bits/pixel), … etc. There are drawbacks also: very large files (25-30MB/picture for Canon EOS 550D), always having to postprocess…etc. There is also no doubt that you get the greatest abilities to adjust your picture with a RAW file. I have had this question for a long loong time and now is the time to finally try to get it resolved:
Is there much to be gained from using RAW for an ordinary photographer – like myself?
Are there BIG advantages – for me? Or is it more like carrying two spare wheels for a car? Something that could be of use – but only “once in a blue moon”? Is RAW something I ought to use? Is it worth the hassle, time and space? If I pay good money for a DSLR or a premium compact am I throwing away good money by not going RAW?
I will try to stay out of the technicalities – as this post is really about usability for a normal everyday photographer – with some slight ambitions! (That is like myself! 😉 ) I want some time over for other things as well! This is not for pixel-peepers – but we will peep at pixels now and then to get at the answer! My idea for this post is to find out how close I can get with RAW and JPEG. I will be trying to get the same – or close to the same – results from post-processing both RAW and JPEG – and then comparing the result to see if it can be accepted by someone like me – an ordinary everyday photographer – with some slight ambitions! In ordinary everyday photography with ordinary everyday camera settings will I get enough room and flexibility to handle the ordinary everyday photo situations – if I go the JPEG way?
As most photographers – especially those with compact cameras – uses JPEGs all the time the answer should be given already: JPEGs are good enough! (Or at least a good compromise.) But I want to find out how much I lose out by going JPEG – or could I actually gain something when considering more factors…?
Summer is quickly approaching here in Sweden and it’s beginning to look and feel wonderful! I am saying this so you will understand why this task might take some time before reaching an answer. While on this journey to find the answer – my answer – I would very much appreciate your input and ideas on what to look for and what to compare!
RAW is really many different file formats – specific for most cameras or camera brands Canon, Nikon, Sony, etc … – containing more or less unprocessed info directly from the camera image sensor – and need a special program (or a plug-in to your favorite image software) for your computer to process. Software and/or plugin are usually included with the camera when you buy it. It is sort of a “digital negative” – which you then process – in your computer – into a JPEG or several with different settings. The fact that each RAW format is a manufacturer specific format does raise some (small?) concern in me about the usability over time…
JPEG or JPG files are standardized picture files (JPEG – Joint Photographic Experts Group) that can be viewed, processed and printed with all (?) image software! Not that all standards survive over time but still it is calming to know JPEG is a proper standard so (almost) any type of software with image support will open a JPEG-image – hopefully for many years to come! These JPEGs are created in-camera by the cameras image processor. The process in the camera can usually be adjusted in a few ways: White balance, Contrast, lightness, saturation, sharpness, etc … and also in more general terms like for portrait, landscape, neutral, vivid, vintage … etc.
The are quite a few factors/variables that influence the look and quality of pictures and to even contemplate evaluating them all is quite mind-boggling! It gets even worse when trying to weigh in such things as time spent processing, flexibility, storage space, fun(!), etc.. I would have to limit myself to just a few of all the factors – but I am open to suggestions as to which! Hopefully this journey will help me to decide what really matters – at least to me! Hope you will tag along and find your own set of what you believe are the most important factors! The following are a few of the different variables to compare: Exposure, Dynamic range, Colour saturation, White balance, Sharpness, Contrast and Noise…
The Photo Mission
I set out with my trusty Canon EOS 550D/Rebel T2i to take a bunch of pictures like any tourist (with some slight photographic ambitions) would do. I set the camera for saving both RAW and JPG. The plan was to let the camera do its automatic “magic” so I set it up for what pictures I like to get out of the camera: one notch up on contrast, saturation and sharpness! I know from comparing the different Canon picture settings that “Neutral” actually gives quite good likeness to the original – but rather soft picture – that I would not be satisfied with but that I always would have to post process. “Standard” is my most used setting + every now and then I use “Landscape” settings. Sometimes throwing in a “Portrait” or two. I have tooled with the idea of creating a RAW to JPG processing of my own and download it to the camera. (The Canon EOS 550D/Rebel T2i allows you to do this – giving you access to loads of settings!) The more I think about it the more I wonder why I haven’t…!
The software I will be using is Canon’s Digital Photo Professional, Adobe Photoshop Elements and IrfanView. I am also using a 24″ 1920×1200 pixel Dell UltraSharp U2410 display.
The fine print:
The above was a lot of technical stuff – don’t be scared of it because my intention is to mostly use my eyes to make up my mind and include samples so you can use your eyes and make up your mind! I will of course give you my opinions of how the pictures should look! The reason why I stress that you make up your mind is because as we all know taste and liking is not universal! You might like a different look on your pictures and because of that you will have samples to look at so that you can make up your mind! Hopefully we can all arrive at a good understanding of this tricky question!
I will update this posting to contain the complete article as I go along!
Till next time!