Lightroom File Corruption

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I wonder if anyone else out there has experienced the same corruption problems that I have had in my lightroom setup with DNG files. I have been using lightroom version 1 and now version 2 for about a year and a half. I have had 2 DSLR’s during this time, a canon 400D and now the 40D. At some point I decided to select the option that converts your canon Raw file to their own proprietery .dng (digital negative) file on import because I was persuaded that it was a robust and futureproof version of Raw. I even did this with my “100portraits” files which as you can imagine were very precious to me. Around the time of the 1.4 update (from memory) I suddenly noticed that my files in the library of lightroom over a period of a few days suddenly showed corruption on the previews. Importing the files into a fresh machine with lightroom or photoshop elements still showed the same corruption artefacts; they seem to be at file level. Disaster! This has affected at least a few hundred of my files, and generally when a folder is affected at all, most of the files will be corrupted.

On the help area of the Adobe forums card reading or writing errors were mentioned, but my files were in the system and working for a few months before this appeared. I had routinely produced prints for people from my portrait project, and burned CD’s of the jpeg exports; I find it hard to imagine that this was an importing issue. Thankfully with my portrait project I exported all the .dng files to jpeg in their unprocessed state so I have something, even if it won’t give me the processing latitude I would like.

You might be saying now, “why didn’t you backup”? Fool that I am, I did back up to a Netgear network attached drive using automated file synchronisation. Overnight it synchronised all the newly corrupted files overwriting the older uncorrupted ones. Please learn from me on this one, synchronising backups just synchronises faults as well, so configure backup wisely!

Anyway, I now refuse to convert to .dng keeping the original Canon Raw in preference. My corruptions only happened to .dng’s for some reason.

Has anyone out there had the same problem. Has anyone found any repair utilities. Have Adobe got a repair tool I wonder?

Anyway, some samples:

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Note: Sample pictures are .dng conversions from Canon 400D and 40D

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Mac

mac

Mac was my 2nd 100portraits subject and I was a bit nervous taking his picture. Mac was a professional photographer and so being sent to him on my 2nd outing with so little experience was a shock. He turned out to be a great guy, and did all he could to help me, but I stayed a little uptight throughout. This was taken at ISO 1000 and so has a little noise, but I really love it and can’t believe I didn’t pick it first time around. If I remember right, Mac’s father once owned this model of car, hence us using it as a setting. I suspect I made the black and white conversion because of the colour cast from the overhead flourescents in the museum that we were in. They had a very green cast that was unusually difficult to shift; It suits the old car anyway.

I really love the direct intensity of Mac’s look here.

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Little Lessons 1: Choosing a camera

Looking towards your eventual aspirations as a photographer is essential when you are choosing your camera. Essentially there are 3 levels of aspiration even though the boundaries are a little blurred between them. They are:

Level 1: Point and Shooter:

Level 2: Enthusiast:

Level 3: Expert or Professional

Each different level of photographer expects different levels of quality, features or build from their camera. Knowing which level you are at, and more importantly knowing which level you aspire to over the next few years is key to getting the right camera. (It might be key to satisfying yourself that you have the right camera already).

So what do people at these 3 levels want from their cameras and photography?

Level 1: Usually these photographers don’t want to get hung up on the technical details of their cameras. In general they want to point the camera, and press the shutter. They may be interested in knowing how to get the best from the camera if a few simple controls could make a significant difference, but they don’t want to know about apertures and shutter speeds. These photographers may be really interested in better composition and possibly even using the camera for macro (close up) compositions.

The camera will usually be chosen for simplicity, “pocketability”, style and quality of lens and of course image quality from reviews.

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Level 2: These photographers cover a wide range of knowledge levels. Generally they want a camera with total control over aperture, shutter-speed, ISO settings, metering, exposure approaches and a stack of other things. In short, the more control they have the better. They also realise that the larger sensor of a DSLR or similar camera means better image quality and control over both noise levels and depth of field. They realise that this means a larger camera and they are prepared to carry it for the benefits it will bring. Clearly level 2 photographers will want to take photographs for the sake of making pictures rather than just photographing family and friends at events, or just using the camera to record their hobbies such as a hillwalker always carrying a point and shoot camera. Magazines, books and websites will generally be read to develop their skills. There might be aspiration to take the hobby further in future.

The camera will be chosen for image quality and features within a budget which will vary a lot from person to person. A budget or mid-range DSLR would be a typical choice. Some enthusiasts might choose a high-end compact which allows control over all settings since it is easier to carry. In this case noise performance and “Depth of Field, (DOF)” control will be sacrificed.

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Level 3:

These photographers are not all that different to level 2 photographers. The key difference is that they are well up the learning curve and have a high degree of confidence in their own skill level. They may be photographing professionally or undertaking major photo projects allowing them to spend a lot of time using their camera. This heavy use of the camera, combined with a sense of expertise is what dictates this level of photographer’s choice of camera.

In essence, the cameras will seldom do anything much that an amateur or enthusiasts’ camera does, but it will be built with quality and durability in mind. The camera will have expensive lenses that seek out that extra detail and sharpness that an enthusiast’s camera can’t quite manage, even though it may come close. The sensors that record the image will often be larger and more expensive but will allow sharp pictures in even lower light levels when an expert often just has to deliver a good image. The cameras will often be built to survive a drop within reason and a drop of rain or even dust shouldn’t trouble it while the enthusiasts’ lenses might be better kept in the bag.

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Conclusion:

  • So if you just want to take snaps, you don’t care. As long as it has an automatic mode and you can press one button you’re happy. Frankly this article wouldn’t much interest you anyway.
  • You love pictures but you don’t yet feel interested in technical details. You want to take better composed pictures with fewer under or over-exposed as well as fewer blurry shots and absolutely no more lampposts out of your friends’ heads. A decent compact or point and shoot is fine for you at present.
  • You put picture quality as your main priority and you don’t mind doing some learning and reading to achieve the best you can. You’re not embarrassed by carrying a “real” camera. A DSLR or other serious camera like a four-thirds or even an advanced compact is for you. But then you probably know that!
  • You’re making a name for yourself as a photographer, you have exhibitions, you are making money from this now or you’re undertaking major projects, then you need the best. Of course you might be level 2, but with money to burn, well why not! (Buy me one too please)

I am aware that these are perhaps slightly crude levels, but the point is to realise that you need the camera for your aspirations, and to know what your aspirations are. Just for the record I put myself in level 2, probably getting well up the curve but still with immense amounts to learn.

Any terms you didn’t understand I’ll cover in future articles. Next “little lesson” will be “making the best of a compact”

DP Review has a great series of articles starting here about choosing a compact.

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Dianne

dianne

for those of you who don’t know me I did a project last year to photograph 100 people who chose each other in a sort of chain. I chose my favourite picture from each session and these went on my “100 portraits” blog. Now that I have the luxury of this blog I thought it would be fun to revisit each of my subjects and  choose an alternative portrait from the original session. l am happy with my original choice in most cases, but I know I chose badly in a few cases. I didn’t change any pictures after my original choice  on a point of principle. It’ll be fun to see what a second choice produces. You’ll find the original project in my “blogroll”. Watch this space for the rest of my subjects reappearing.

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Martin

martin-at-the-burrell1

My dear friend Martin at one of his favourite places, the Burrell Collection in Glasgow’s Pollock Park. We arrived as it was becoming dark so  lighting was a difficult mix of background tungsten lighting with orange cast and a slight natural twilight coming in the window behind me. This gave me difficult colour cast and shutter speeds that would struggle to stop a glacier. I used a handheld offboard flash to fill in a bit of sharpness on Martin’s powerfully expressive face and converted to monochrome to get rid of the awkward mixed colour temperature in the lighting.

It should be noted that the Burrell Collection staff gave me telephone permission beforehand to take this portrait provided I didn’t use a tripod. I think it is really helpful that Glasgow museums are not only free to enter but have such a helpful policy for amateur photographers. If you are passing by give them a visit, and maybe put a donation in their box; it’s a great service.

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