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Filters

Filters are my new love - using and misusing them gives me great pleasure. Initially I was put off buying any as I didn’t understand what to actually get - adapter rings, filter holder, ND 0.9 - it was all double dutch to me. Hopefully my crazy waffle and mad experiments will encourage someone else to give them a try :)

Boats On Cropston Reservoir

Boat On Cropston Reservoir

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Two old images today, both of the same subject, taken on the same day.

When I got my first DSLR in late 2008 I didn’t really consider just how much space all these raw files where going to take up, and I certainly didn’t think about organising the files - each outings images just went in a folder and I processed the ones I liked the most. As you can imagine, when you use the camera a lot it doesn’t take that long before this gets messy, so towards the end of 2009 I started having a bit of a tidy up. This also gave me chance to review images that I’d missed first time around - things that I’d overlooked in favour of different compositions.

The day these photos were taken was a bit of a breakthrough day for me - prior to that I’d been trying too hard to become “a photographer”. I was too obsessed with composition and trying to take “great photos” but I hadn’t the learnt the things that I now find more important, the non technical things like enjoying the beauty of your surroundings and trying to capture some of what you feel in the scene.

The photo below was the one I chose from this scene at the time but when going back through the shots I found the one above, with its open space and gentle ripples, which I now like far more. It just goes to show how important it is to review your old shots :)

Boat On Cropston Reservoir

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Golden Light Over The Gravel Pits

Golden Light Over The Gravel Pits, Leicestershire

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It was about an hour before sunset when we arrived at this location, and the light had just taken on the golden hue we had hoped for. After a bit of wandering around trying to find somewhere to make the most of the light I settled on a nicely constructed platform that was probably intended for fishing and took a couple of shots of the scene above. It was quite pleasant, but a bit bright and there was no interesting foreground to speak of so, as I had a bit of time before sunset, I thought I’d give the Cokin P151 - Gradual Fog 2 filter a try.

I popped the camera into Live View mode and slid the fog filter into the P-Series holder. The fog filter is graduated - foggy at the top and clear and the bottom, fading gently between the two states - and using Live View enabled me to see accurately where the effect was going to begin. If the effect started too low or too high in the picture it wouldn’t look natural.

This was the shot as it came out of the camera…

Golden Light Over The Gravel Pits, Leicestershire

I liked the effect but found it a little too bright and unrealistic so I just made some minor curve adjustments to improve the overall balance.

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Why I love my ND grad filters

There, I’ve said it. It’s probably incredibly unfashionable in this age of digital - in fact I often see people on forums etc discussing selling their grad filters because they have abandoned them in favour of exposure blending - but they are currently my preferred method of attempting to balance exposures.

An ND (Neutral Density) grad (Graduated) filter is basically just a piece of plastic that is dark at one end and clear at the other - the dark part of the filter is positioned over the lighter portion of the scene, reducing the light variation (dynamic range) of the scene so that it can be captured without any loss of detail.

Drawbacks

As with other methods used to make your camera faithfully reproduce a scene with a wider dynamic range than it is capable of, ND grads certainly have their drawbacks:-

  • The line between the clear and dark parts of the filter is a straight one (albeit with a slight fade/graduation to make it less noticeable). Rarely will a scene have a simple, straight line transition between dark and light so you end up having to compromise and perhaps hide the transition somewhere you hope the viewer won’t notice it
  • Getting the gradient to start in the correct place takes a bit of practice - if it starts too low some of the foreground with appear slightly darker - if it starts too late the brightness of the sky might appear uneven.
  • Like all lenses and filters they need to be kept clean - and as I swap them around between filter holders I have a tendency to drop them :(

With so many negative points, why use them?

Other methods of exposure balancing (such as exposure blending or HDR) require multiple exposures of the same scene, which realistically means using a tripod. I have a tripod, and I use it a lot, but I don’t always carry it - when I’m out with the family it’s an unnecessary burden - and sometimes I make the decision not to use it at all as constantly relying on it can lead to a lack of invention. A set of grads takes up very little room in my camera bag.

Processing time. Other techniques may only take a matter of minutes when you are skilled at them but if I’m taking an afternoon’s worth of casual shots I want them all to look their best with minimal editing.

An Example

These two shots, taken at sunset in Bradgate Park show the subtle but pleasing effect of using the Cokin P121M (ND4) grad. The first shot was taken without the filter. As you can see, the foreground is quite dark.

Old John, Bradgate Park, Leicestershire

Technical info: ISO100, 18mm, f/22, 0.5s

The second shot (below), with the filter in place produces a much more even result.

Old John, Bradgate Park, Leicestershire

Technical info: ISO100, 18mm, f/22, 0.6s

No further processing has been done to either image. As you can see from the technical info, the second shot was exposed for slightly longer (0.1s) which allowed more light from the foreground to be picked up by the camera sensor, resulting in a more even looking photograph.

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Golden Crops

When I was first introduced to photography I was horrified by the concept of “Chasing the Light” - trying to be in the right place at the right time to capture a scene at its best (or at least, how you want it to look). Now, a year later, I find it one of the most interesting and fun aspects of photography. Of course I expect it can also be a dreadful chore, revisting the same place tens of times, just waiting for that special moment - but for the novice photographer it’s an interesting and useful experience.

I often go out in the evening for an hour around sunset - sometimes the light is quite good, other times it is overcast, but it’s always nice to visit new locations and get out for a walk in the countryside. The first time I went to this location, a field next to a footpath that leads to Bradgate Park, it was just getting dark and the light was quite poor. However I was intrigued by the crop so decided to go back the next day. Despite it being lovely and sunny when I set out, by the time I got there the weather had changed and the sky was filled with cloud.


Cropston, Leicestershire

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Despite me quite liking the subdued brown of the crops I really wanted a bright, golden shot of them. I only had to wait a couple of days for the weather to improve. When it did I went back again in the afternoon - not a time I’d normally shoot but I knew the sun would be in a good position to illuminate the field but would also be out of shot.

The final shot was taken with a Cokin ND8 grad filter on the sky and a Kood light tobacco filter on the ground. The grad was used to balanced the exposure so that I could get a nice bright crop, with the tobacco filter being used to emphasize the colour.


Golden Crops, Cropston, Leicestershire

Click image to view larger

I don’t actually know which I prefer now, but I’m glad I made the effort to get both. I’m also pleased that I went back so soon as the farmer mowed the crop down a few days later - something else that I learned the hard way - never put off taking a photo.

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Boat in Mevagissey Harbour

Boat in Mevagissey Harbour

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Another image from our holiday in Cornwall earlier in the year. I’ve always loved the rich dark colours of this shot and the gentle ripples in the water, which looks almost like black treacle.

The sun was low in the sky to my right when this was taken, casting a warm glow across the harbour.

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Sunset at Cropston Reservoir

Sunset at Cropston Reservoir

This was the first sunset I ever really paid attention to - and the first one I witnessed with my camera. I hadn’t previously been aware of just how much the light changes before and after the sun goes down and being there was accidental - I had actually gone to take pictures of some boats I had noticed there earlier in the week.

I’d just taken delivery of some new filters - a light blue grad and a light tobacco grad, both Kood - and was keen to try them out. After getting the shots I wanted I started to wander back to the car when I noticed that the sun had finally disappeared from view and there was a slight ripple moving across the otherwise still reservoir.

I used both filters here - the tobacco one at the bottom and the blue one at the top. Technically I should have included some foreground but the colours in this were pleasing enough for me to not mind its exclusion.

Technical details:- 0.125 sec (1/8s), f/8.0, 21 mm

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Railings, Mevagissey Harbour

Railings, Mevagissey Harbour

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In a number of previous posts I’ve mentioned just how much difference a few minutes can make to a scene. The above shot was taken on the first day of a recent holiday in Cornwall whilst we waited for our accommodation to become available.

I’ve become more interested in black and white than colour photography just recently and it seemed the perfect style to capture the old harbour. The sunlight was patchy at the time and I got the shot I was looking for, looking out to sea through the railings (see below), however just as I was preparing to move on the sun broke through the clouds and lit the scene perfectly. It was impossible to ignore the combination of colours in front of me so out came the red filter I’d been using and in went the ND grad to improve the sky.

Railings, Mevagissey Harbour

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Harbour Wall, Mevagissey

Harbour Wall, Mevagissey

It seems I’m currently “very into” black and white photography - although to be fair, it’s something that I’ve always liked when other people have done it but never really bothered with it myself.

With the advent of digital photography I think B&W has got a bit of a bad name for itself - tools which can greyscale an image mean that it’s an easy way to attempt to salvage a flawed colour image (not that I don’t convert my own colour images sometimes also). The shot above however was achieved using a Cokin P003 red filter, with the image then being desaturated and the contrast tweaked slightly - which took about 30 seconds at most - the ideal amount of processing time when you’ve got a lot of photos to work through :)

Why desaturate? Why not just shoot in black and white mode on the camera? Well, if I was shooting in jpeg mode it might be a good idea but as I’m shooting in raw mode, when I get the images into Lightroom they will be red again anyway so there seems little point. It doesn’t really help for reviewing the shots on the camera either as the black and white preview displayed on the camera seem quite different to what I see in Lightroom. Besides, I’ve got used to previewing the red images now - once you’ve learned to trust your manual exposures it’s not that much of a problem.

Using an external filter isn’t without its problems though - the main drawback with the red being that you lose 3 stops worth of light so you end up having to make sacrifices in either ISO, shutter speed or aperture (or a combination of the three). Shooting at ISO100, f/11, 1/250s isn’t going to be an option unless you are taking a picture on the surface of the sun so I usually end up at ISO200, f/8, 1/100s - not ideal, but as an exercise in learning to take control of your camera in its manual mode I can heartily recommend it.

Fortunately many DSLRs now have the ability to simulate the affect of certain colour filters built in to their Monochrome picture options - certainly the Canon range do. These can be used without any loss of light, but only have an effect if shooting in JPG - raw images remain unaffected by them.

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Curbar Edge Stone Circle

Two photos today, both from the same location, Curbar Edge Stone Circle in Derbyshire.

Curbar Edge Stone Circle

I was lying down when I took this, as I often seem to be now when taking photos. I’d never really thought of it before, but since dispensing with the tripod it gives that extra bit of stability and allows you to get shots that look a bit different from everyday snaps.

I had originally intended this shot, along with all the others from that day, to be in black and white and they were all taken with either green or red filters attached, but there was something about the distribution of colour in this one that made me decide to tint it (and the other shot here).

As with Shimmer a green filter and an ND4 grad were used and then a magenta tint was added in post production.

This second shot was taken slightly earlier, whilst I was waiting, and as I’ve mentioned in another post shows how much difference a few minutes can make to a image.

Curbar Edge Stone Circle

Whilst the grad filter is slightly too low and darkens the top of the frame a little too much the subject lends a wistful air to the shot, which lead me to decrease the saturation. I think this gave a much lighter feel, a child lost in contemplation on a warm sunny afternoon (probably wondering why a grown up is lying on the floor)

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Shimmer

Shimmer

My discovery of filters and their uses has increased my enjoyment of photography immeasurably. Some ND grads were recommended to me for use on skies as an alternative to using HDR. These filters are grey and have no colour cast (the ND stands for Neutral Density) and they stop a certain amount of light entering the lens - the “grad” bit refers to the fact that they are graduated, so part of the filter is clear and lets all the light pass through, but some of it is dark and lets less light pass through. Basically they allow you to make the sky less bright, which allows more detail to be captured elsewhere in the photo, such as the ground.

The shot above, which was taken in Watermead Park, Birstall, was taken with a combination of Cokin ND4 grad (P121M Grad Neutral Grey Medium) and Kood Green filters. (The Kood filters are much cheaper than the Cokin ones and possibly there is a difference in quality, but as I’m just an amateur and trying these things out for the first time I’m not overly worried at this stage - besides I get 3 Kood filters for the price of the Cokin Light Tobacco filter that I was about to buy for £30)

The green filter is really for use in Black & White photography but I find its effect can be pleasing in colour if a red tint is added in post production to calm the green down a bit. Obviously it’s possible to alter the all the different colour levels in Photoshop to get the same or similar effect, but for some reason I don’t find it as enjoyable. Using them on the camera also seems to help me with ideas - I’m actually looking at contrast and texture more than colour and am divorced from the beauty of the scene.

This was how the image looked when it came from the camera - it’s a bit “green” but it allowed me to see how the final image would work.

Original

The image below shows the importance of waiting at a spot for a few minutes - when I arrived there was a breeze and no pleasant reflection in the water :)

Other

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