HDR Photography with the X100F…

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How many times have you taken a photo on a sunny day, only for the subject to be in deep shadow, and the background or sky to be burnt out?  Our eyes have the ability to cope with these huge ranges of brightness, and ‘adjust’ accordingly, but sadly even the best cameras are limited in how much they can handle. Expose for the shadows, and the sky will be burnt out – expose for the sky, and the subject will be too dark… If you are adept with Lightroom or Photoshop you can ’tweak’ the various bits of your image, but the effect is limited and often not sufficient to fix an image.

These three photos illustrate the problem – the foreground in the top photo is too dark; the sky in the bottom photo is too light; the middle shot has the best brightness range, but the sky is still a bit light and the foreground clearly too dark and the image lacks ‘punch’.

Graduated filters that fit on the front of your camera lens and just darken one area of the image are one way to control the brightness of the sky. However, filters are expensive,  it’s all a bit of a faff to get them lines up, and don’t work very well if you don’t have a clear and straightish line between dark and light parts of your image. If a building is sticking up into the part of the sky you are trying to darken with the filter, then the building too will be darkened and won’t come out well.

Enter the magic of HDR (or High Dynamic Range). The trick is to take several shots, varying the exposure so you record detail in the lightest and darkest areas of the image, and then combine them so all parts of the photo are properly exposed and all the detail in the image is visible. Most modern cameras and smartphones have an HDR facility built-in, so it’s all done automatically for you, but the results aren’t always that good, and you generally don’t have any control over the process.

IMG_2806It’s easy enough to do with your camera though, and potentially gives much better results… Start by setting your camera to ‘exposure bracketing mode’  and set the number of exposures and the difference between them.  The X100F is limited to just 3 shots, within a range of + or – 1/3rd to 2 stops, whereas my other camera (a Sony A7iii) can take up to 11 shots, not that you really need that many…  Then take your 3 photos, keeping the camera as steady as possible – the merge process can compensate for small movements between shots anyway, but keeping the camera still helps. It’s also always worth shooting RAW rather than JPG images as there will be more scope for later adjustments. If you look across the set of three (or more) images you have taken you should be able to see detail in the lightest and darkest areas. If not, then try again, altering the overall exposure compensation up or down a bit.

IMG_2805(If you really feel you need more than 3 shots with the X100F, there is a workaround – set the camera as above and take your first three shots, then turn the compensation dial to say, -3 and shoot again, then repeat using +3 – that way you end up with a series of 9 shots covering a wider exposure range. Keep the camera still during this whole process, so it really does mean using a tripod… Then choose maybe 5 or 7 shots that cover the range of exposures from darkest to lightest. Remember that with the X100F you can change exposure compensation by up to +5 and -5 by using the front wheel.)

Screenshot 2019-09-04 at 08.00.45 (1)Then import your photos for editing (I always use Lightroom, but there is other software that will do HDR merging). Then select your set of images and right click, select Photo Merge, than HDR. It’ll take a few seconds to create a preview depending on how fast your computer is, and how many photos you are merging. Adjust the options for auto aligning images and adjusting deghosting if necessary and then click ‘merge’ and Lightroom will, in a few seconds, add the new merged image to your filmstrip.

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Finished HDR image

The resulting image should capture the widest possible range of tones, and you can make any further minor adjustments in the usual way.

It’s a great way to deal with subjects that would otherwise not turn out well because of the brightness range.  It works well on bright sunny days when shadows are really pronounced, and also night time shots, although here of course you’ll definitely need a tripod.

Give it a try – it’s easier than it sounds!

Infrared with an X100 Camera…

Infrared in the days of film photography was a pretty complicated affair – the film was expensive and difficult to shoot and process, yet the results could be stunning – skies rendered almost black, and foliage almost white, all with that infrared ‘glow’.

DX140720-40Using Lightroom or Photoshop you can ‘tweak’ regular digital images to give a kind of faux infrared effect, but it’s not completely convincing. You get a much better result by using a digital camera that has been converted so it just records infrared light. This is done by removing the ‘hot’ mirror that sits in front of the sensor and blocks the infrared part of the spectrum, and then adding a filter to block all or part of the visible light spectrum. This filter can be fitted directly in front of the sensor, or as a normal lens filter, and you can choose one that still gives a colour infrared image, or just monochrome (my favourite).  Bear in mind that camera lenses are not designed to be used for infrared and many exhibit strange effects like multiple reflections or ‘hot spots’ where the centre of the image is much brighter than the rest.  All in all, it’s a pretty tricky business and expensive too…

However, some cameras, and the X100 is one of those, still have a reasonable sensitivity to infrared and you can get decent enough infrared photos using nothing more than a filter over the lens. Here’s how it’s done:

DX140720-39Start point is to get a 49mm R72 infrared filter (you’ll need the filter adapter for the X100 if you don’t already have it.) I used the Hoya R72 filter, but there are cheaper ones about which seem to work too. R72 means that it will filter out all light with a wavelength less than 720nm – which is most of the visible spectrum, so the filter appears black to look at. There’s now so little light coming through the filter (it’s worse than a 10 stop regular ND filter!) that you’ll have to bump the ISO up on the camera, probably to around 3200 or so, and still need a long exposure of several seconds, so it really needs a tripod too.  There’s a lot more infrared light around on sunny days, and the technique works particularly well on green foliage so it’s a summer’s day job really…

DX140720-43It’s a good idea to adjust the white balance on the camera too, and rather than use a white card, just point the camera at a patch of grass or similar when setting it (p67 in the X100F manual if you’re unsure how to set custom white balance.) Remember to revert to auto white balance when you’ve finished shooting infrared!

Now it’s just a question of setting the camera to around f8, focussing and shooting. Depending on how bright it is, the camera may struggle to autofocus, so it’s trial and error with manual focus, and because the viewfinder image will be dim, you can use the optical viewfinder for composing.

You’ll get a pinky-red image (I always use the RAW image as a start point for processing) but convert it to mono and there it is! The BW 02 mono preset in Lightroom is a good start and you can adjust it from there to get the effect you want.

It’s not perfect infrared, but a jolly sight less expensive that having a camera converted!

(All images shot at Buttermere, on a Fujifilm X100S camera with Hoya R72 filter)