Showing posts with label long exposure. Show all posts
Showing posts with label long exposure. Show all posts

Friday, 8 June 2018

Sunny Days Are For Barbecues



In my part of the world we've been having a lot of the kind of weather you normally spend most of the year hoping for. I'm glad of it, it's good for so many things. It's just that photography isn't really one of them. That's not to suggest that brilliant warm cloudless days and worthwhile photographs are mutually exclusive. The above image was made on just such a day and I'm happy enough with it. It's just to say that if I'm looking for weather that will lend itself to interesting images, perfect is less than ideal.

 All of the images you will see in todays episode were made during a single afternoon jaunt down one of the many out of the way and relatively unknown glens the Niagara area is blessed with. The day was, by most standards, ideal - warm though not at all uncomfortably so and not a cloud in the sky. Take away the fact that I had come intent on doing a bit of photography one might have deemed the day perfect. The perfect day for a hike, or if that's not your speed maybe a picnic or a back yard barbecue. For photography though, not the kind of day I would have chosen.

Many of you will know what I'm talking about here and the images below should atest. Though I worked as meticulously as possible with the spot meter to keep as much shadow detail as possible without sending highlights into that irretrevable upper plateau of the contrast curve the images still look, I don't know, blasted. It's not a technical thing that can be managed. I could be wrong but I imagine that even if I was one of those photographers who used the Zone System in it's full form and had worked out an N-1 development I can't imagine it would have helped much. Harsh light is harsh light. The things that typically lead us to describe this kind of day as beautiful just don't translate well onto film and/or light sensitive silicon chips if that's more your thing.







These are all straight up quick and dirty, un-played-around-with scans. As I'm sure most of you would be quick to point out they are all long exposures made with a 10 stop ND filter. Long exposure images on film can be contrastier once reciprocity failure kicks in, but all images were 60 seconds or less shot on Fuji Acros which, as I discussed last time, is well within the pre-failure portion of that film's reciprocity curve so I don't think this has contributed to the overall sun-blasted look.

Now some of you may be thinking some of these images are pretty okay-ish. It might be interesting to re-scan one or two of these a bit more carefully and see just how much could be done with them. If these were images taken in some some exotic location I was unlikely ever to get back to I might be tempted to try. As it is I usually visit this place a few times a year.

For comparison here is an image made in the same glen on a different sort of day two years previous. The light wasn't completely bland but it has a feel I don't think could ever be extracted from any of the examples above.



And just to make the obligatory point that there are no hard and fast rules when it comes to this sort of things there's that image at the top that I think is a keeper. It was made on the same day and in the same conditions as all the much too harsh image examples. Hard light has it's strong points, especially earlier or later in the day when it comes from the side rather than straight down from above. It's often what's behind those particularly dramatic effects, backlight, grazing light and whatnot. I think something like that happened in the image with the girl below the waterfall. (Every photographer should know a girl who is fond of waterfalls.) It was still mid-afternoon when this was taken but the slope of the north-facing waterfall seemed to be just such that it was catching the light at a bit of a grazing angle. This was helped along by the difusing gossamar like quality of the water in long exposure (it also helps when the girl who likes waterfulls is really good at holding still!)

In the end the message is that if you head out with a camera on a bright sunlit day you might come back with something more than just tan-lines. You might also want to wait for a day when your chances will be better. After all, it's the perfect kind of day for a barbecue.

Wednesday, 16 May 2018

Deathbed Vigil for an Old Favourite


Unless you're brand new to film photography you/ve been witnes to the buzz in the photographic community that comes with the announcement that a new film stock is about to hit the market, or more likely an old one is being re-introduced. Just as surely you've seen the the reverse play out when a film stock disappears from the market. While inevitably these announcements are accompanied by lamentations by some about how this is a sign that choice in the film market is drying up, the wiser among us realize that in the wider picture there is no such trend. Of course things will never be the same as they were when film was the only viable way to do photography, but that's a done deal now. For the most part anyone who was going to give up using film for digital has already done so. What we see today is not a decline. Films come, films go. They always have.

Of course it's a little easier to keep this perspective when the film whose immenent demise has just been announced is not one of the mainstays of your own working method. Sure it was a shame when the Kodachrome process was shut down for good, but honestly I hadn't shot with that particular film in the ten years prior to that. In the past all of these discontinuations came and went with me sad to see another emulsion go, but happily going on with my work no differently than before.

This time though, with Fuji's announcement that they will be discontinuing their Neopan Acros in all formats as of October 2018, five short months from this writing, it finally hits home for me. It has been roughly five years since I returned to shooting film for virtually everything creative that I do. Over that time, though I haven't kept count, I'd say at least half of the rolls that have gone through my cameras have been Acros, and it wouldn't surprise me if I were to learn that it had been a good deal more.

If you're not familiar with it's characteristics, Acros has all the basics covered. It's a 100 ISO black and white negative film with sharpness and grain that put it in roughly the same league as Kodak's T-Max. While it's almost purely a subjective thing, its tonality is something I find pleasing, and at the very least few find it objectionable. Acros has a few other tricks up its sleve though. It is uniquely good at handling highlight detail. This makes it particularly useful in contrasty situations. This also means over exposure is less of a worry, so if you're struggling with shadows you want to see detail in you can usually give it an extra stop and let that lattitude cover the rest. If one were looking to fault Acros you could accuse it of being so forgiving as to invite carelessness.

To me though shooting Acros comes with one over riding delight that beats all the others, and that is that reciprocity failure is something you almost don't have to think about (For those not familiar with reciprocity failure please see the excellent explanation by Mat Marrash on the FPP web site.) Given that I, like many photographers who share a love of the landscape, enjoy experimenting with long exposure techniquest, this makes it a very special film. With many black and white emulsions exposures as short as one second may require an exposure adjustment to compensate for the film's deficiencies with lower light levels. With Acros no adjustment is needed for exposures of up to two minutes.

Now I'm not above bringing along a reciprocity cheat sheet or even doing a bit of math in my head, so why worry too much about having to compensate? It's simply that reciprocity failure can quickly get out of hand, and the more prone to reciprocity failure a film is, the more easily this can happen. With some films for example, if after accounting for reciprocity failure I determine and exposure of 30 seconds at f/8 is appropriate, but feel the scene requires me to stop down to f/16, my new exposure time may become not 2 minutes as we might expect, but 7 or 8 minutes. And if the light may be changing on you over that duration of time the shutter is open any real chance at an accurate exposure may come down to little more than a semi-educated guess. For my money, its' best just to keep things as linear and predictable as possible.

Of course the final factor is simply that Acros is what I'm used to, it's what I've learned to handle. For me it is a known and predicatable commodity. In my case it even has an added bonus in that processing time in my developer of choice, PMK Pyro is exactly the same for Acros as it is for HP5, which is the film I usually turn to when I need a bit more speed, so I can just develop everything together.

Change is inevitable of course, but that doesn't mean we can't fight it. Even though I probably had enough Acros on hand to get me through the summer as it was I immediately put in a panic order as soon as I heard the announcement. Shortly after this Acros was nowhere to be found at any of the online outlets I knew or could find. This was probably due to a rush created by all the other fools who made the same panic buy I did when they heard. When they went out of stock I saw that B&H simply listed Acros as discontinued making me wonder if that was it, so when it was again listed as in stock earlier today, you guessed it, I put in another panic buy. I imagine there will be one or two more in the coming months, as well as the need to buy a larger freezer. I may be in Acros for a few more years yet.

Of course that's only prolonging the inevitable, but so is all of life if you think about it. What happens when it's finally gone? Seems I should have a while to think about it. By then there may be something new.

Saturday, 17 October 2015

Through a Filter Darkly


Long exposure photography, where the shutter is left open long enough to blur even slower moving subjects in the frame, has been with us for a long time. In fact in photography's early days the poor sensitivity of photographic plates compared to the film speeds we are used to today made it impossible to do anything but, requiring portrait photographers to put to use braces to hold their sitters heads still less any small motion during the many seconds to minutes the shutter was open blur the image. As film sensitivity improved and it became the norm for photographers to truly be able to freeze an instant in time and long exposure photography became something of a special technique. Often this involved night time exposures such as the familiar images of star trails, where darkness allows the shutter to be left open for hours even with today's more sensitive materials. Sometimes though it would be desirable to leave the shutter open for long periods of time even in full daylight, for example to give a soft gossamer appearance to the flow of water in a fast moving stream. When simply closing the aperture down to its smallest setting isn't enough photographers wanting to achieve this effect have long carried neutral density (ND) filters to cut down the amount of light reaching the lens by perhaps three to four stops which might allow exposures to be stretched out to a full second or more.

It's hard to say when but over the past decade or so a growing number of photographers began to push the envelope of where these long exposure techniques could be applied. By extending exposure times even further, to minutes instead of seconds, motion such as the rolling of waves or the drift of clouds across the sky could transform the entire feel of a scene, achieving a new level of abstraction by viewing the world over a time scale much different from those at which our eyes operate. Suddenly, rather than three or four stops, photographers began seeking out ND filters that reduced light by ten stops. There are now many such filters on the market.

If you have never used a ten stop ND filter, you need to look carefully at a rather bright scene to be able to tell that they are not completely opaque. (It is not safe to look directly at the sun through a 10 stop ND filter however, or any filter not specifically designated as safe for this purpose. This includes looking through the optical viewfinder of a camera with a filter in place. Seriously.) The effect, as you would imagine, can be dramatic, altering the feel of a seaside image as radically as the use of infrared film can transform a photograph of a forest scene.

Having moved beyond a technique a photographer could pull out of their bag of tricks for special occasions, long exposure is now often referred to as a different kind of photography, its own genre. Photographers have built successful careers largely, sometimes almost entirely, through their long exposure work. I wouldn't dare be so presumptuous as to try to list the "most notable" long exposure photographers, but to give you a taste you might want to have a look at the work of Michael Levin,
Keith AggettNathan Wirth or Paul Simon Wheeler.

Do so and you'll probably note the way bodies of water feature strongly in the portfolios of these photographers. While long exposure techniques affect the appearance of anything in the frame that is moving - windblown grass, clouds, humans - somehow it is water and the motion of waves that seem to create the greatest emotional impact, especially when the ethereal mist created by motion and time is contrasted with the solid unmoving presence of a rock, a pier or the wreck of an old ship. I imagine it would be hard to incorporate long exposure photography into your work if you lived out on a prairie.

Situated as I am among the Great Lakes, effectively oceans in terms of their photographic potential, I have favourable geography for long exposure photography easily at hand. It may seem a bit surprising, therefore, that it doesn't constitute a larger portion of my work. I should say first of all that this is in now way because long exposure isn't in line with any personal philosophy or ideal about photography. In my understanding the reason we might find photographs in particular so fascinating in a way that the actual scene photographed may not have hinted at even if we were present when it was taken is that the camera presents us with an image that is familiar and recognizable in a way we can easily relate to, but through an eye that sees the world in a different way than we experience it. We can make creative choices to record in a way that may be a little more or a little less like the way we see the world with our own eyes - motion versus still, colour versus black and white and so on. Often times we find the fascination deepens the more an image differs from the way our eyes see it. Add to this the photographic essence that anchors the image to reality and the fascination deepens. Long exposure photography then is just one more way in which the camera can see the world differently.

I hasten to add it is not an unreal way. If creatures somehow evolved to see the world changing on a time scale of minutes rather than fractions of a second what we see in a long exposure image might be a better representation of how the world really looks to them. To such beings the sort of everyday image we see now made at a shutter speed of 1/60th of a second might be as strikingly unusual as Harold Edgerton's images of a bullet frozen in motion as it emerged from an apple it had been shot through. While we tend to think of the way that we see the world as "objective" and any other way as somehow "unreal", these are accidents of the kind of beings we are. This isn't to say that how we see the world is irrelevant to the way relate to a photograph. I don't imagine an image of a scene made in radio frequencies would have much emotional impact. There needs to be that anchor.

In the end then my choice to stick with the usual sub one second shutter speeds comes down to the particulars of what my muse chooses to whisper in my ear at any given time. I choose to make long exposures sometimes, but not usually in much the same way I shoot colour film sometimes, but not usually. I just have to trust the muse, she's been good to me so far. (What, I can have a female muse if I want to.)

One reason I often don't choose to go with extended exposure time is clouds. If you've been following this blog for any length of time you'll know I love clouds. In fact the very reason I'm writing at this moment rather than being out there with a camera is that there's a beautiful cloudless blue sky outside my window right now - useless. The way clouds render in long exposure images, silken puffs rushing by like freight trains or sometimes extended into aurora like fingers reaching across the skies, can sometimes bring an ethereal sense of its own to an image, but that's not what draws me to the, at least not usually. I'm drawn to clouds for their form, foreboding, the play of light and the sense they give that the sky is a thing. Whatever an extended exposure times may bring to the way it renders clouds, much of the time these other things can be lost.

And so it was that last week I finally found myself at a beach on the shore of Lake Ontario I've been meaning to explore. The weather was terrible, and by terrible I mean just about perfect - blustering winds stirring up waves, dark threatening clouds with the occasional break to let the sun flood through. I walked the length of the beach with the big pack containing my Wista kit then, having shot all 12 sheets I had with me returned to the car and grabbed the smaller pack and did the whole thing again with the Bronica. I honestly hadn't given any thought to doing long exposure on this outing and while I had my 77mm thread size ND filter with me, there were no thread adapters packed anywhere meaning the one and only lens I could use it with was the 50mm Nikkor wide angle for the Bronica. It wasn't until well into the morning, when I came upon a large branch that had washed in from who knows where with what appeared to be a sort of cobbled together ladder I would guess once lead to a tree house still attached that I had any notion of getting it out. Objectively it seemed the clouds were just the sort I usually like to shoot just as they are (or as they appear to me) and the rough surface of the lake with waves that would curl then spread into a frothy blanket as the hit shore were ideal things to incorporate into the photographs I was taking but, you know, the muse.

I have two film backs for the Bronica and on this day one was loaded with HP5+ which is excellent generally and has the speed to allow me to hand hold when the need strikes, the other containing Fuji Acros which, among its other virtues probably the best film ever created when working with exposure times longer than a few seconds. As luck would have it the composition called for the 50mm, the only lens my 10 stop ND filter would fit. To this I added a Cokin graduated grey filter to save me having to burn in the sky later on and a pair of 90 second exposures were made. It seemed prudent to at least rattle off a normal exposure too so after switching backs, removing the ND filter and putting the grad filter back in place I did another shot on HP5+ at, I think, 1/30th.

The long exposure result is up at the top where it stands the best chance of catching the eye of potential readers. It is almost an entirely straight can of the negative though I burned in the lower right corner in Photoshop just a smidge. Now for comparison here is what I got without the ND filter:


For easier comparison here they are side by side. You might want to click to enlarge:


Your evaluation may differ, but even though I'd be happy with the normal exposure if that's all I had taken and your view of the situation may differ, I'll make no bones about the fact that I prefer the long exposure version in this instance. It's true too that I put a good deal more time in Photoshop with the standard version to get it to look as good as I think it could though honestly this is probably due at least in part to some vignetting imparted by the cheap no-name neutral density filter I've been using (even some expensive ND filters are prone to uneven expousre) doing some of the burning-in work for me.

Who is to day if I'll be making this sort of image more in the future. Maybe I'd use it more often if I had something better than a no-name filter. It's an investment I've been considering. (There's never a shortage of things one should consider investing in, is there?) At the very least I'll have to be more careful in future to keep my thread adapters at hand.


Saturday, 11 October 2014

Adventures in Long Exposure

The technique of long exposure photography, purposely using exposure times ranging from several seconds to several minutes or more to create time dependent effects such as giving flowing water a gossamer appearance or creating continuous light trails from the motion of stars or tail-lights, is nothing new. As you may already be aware however over the past several years the popularity of using long exposures in landscape and architectural photography, not just as a special technique reserved for particular kinds of situations, but as a sort of de facto approach that can be applied nearly any time something in the frame is moving, has been growing to become almost a style of photography unto itself. For many well known and highly talented photographers it has become somewhat of a signature look.

An exposure of several minutes I made last year. Lacking the near-opaque neutral density filter often considered requisite for long exposure photography my attempts at long exposures like this were limited to those two narrow time bands each day when the sun was just far enough below the horizon to permit extended exposure times. A bit too dark and exposure times quickly climb from minutes to several hours - far longer than I was willing to wait it out. 

While a deep appreciation for the work of many of these photographers has lead me to incorporate long exposure into my own, I have to confess I'm a little leery about it. The technique seems to be most commonly applied today in a way that is right up my ally photographically speaking, to use the motion of ripples and waves to transform the textured glassy surface of oceans, lakes, firths and so forth into something that appears far less substantial, a mist perhaps. Clouds, meanwhile, often shed all pretense of being stationary when exposures go on for more than just a few seconds. As a result fairly ordinary scenes can take on an air of mystery, a juxtaposition of the familiar and the other-worldly.  Had I ever sat down to write a photographic manifesto the previous sentence would probably feel right at home among its pages, so what's not to love?

A small part of it at least was simply cost. Photographers who regularly use long exposure techniques typically recommend a 10 stop neutral density filter, at least as a start, and maybe a few more 2-4 stop filters to stack on top of that when 10 isn't enough. Considering the advice I find tends to come from photographers for whom long exposure plays a big roll in their work, and who typically are working with larger budgets than a schmoe such as myself, some rather premium brands get mentioned. By far the most commonly cited is the Lee Big Stopper, a square drop-in filter requiring an adapter ring and holder (ideally for each lens) which would easily run me over $200 once all is said and done. Considering that's what I paid for my most prized component of my RB67 system, the 50mm Sekor C lens, it wasn't something I could see ever working its way up to the part of my priority list where things get bought. Fortunately with a bit of digging I was able to find a generic 10 stop filter for under $20. So far it's proven to be perfectly adequate and if long exposure proves to be a more satisfying creative outlet than I've been thinking I can always upgrade.

A more recent photo made through a 10x neutral density filter in order to achieve a 90 second total exposure time. Using Fuji Neopan Acros film eased exposure calculations somewhat a no reciprocity adjustments are required for exposures up to two minutes.

Somehow I'm not seeing it happening though. There are things to be lost as well as gained when this technique is used. I don't always like what it does for the look of clouds for example. There are also times when the surface of the water as it appears when exposures are short enough to freeze its motion is what works best. For an example of this have a look at the first photo in my previous post and note the texture of the water  and how it helps tell the story of churning winds and sunlight. I would be quite a different photo if the shutter were kept open long enough to allow this motion to blur into a sea of marshmallow fluff. Arguably it might still be an interesting photo, it just wouldn't say what I wanted it to in this case.

This might be why, despite my interest in experimenting with long exposures and my belief that it may be the key to getting the right look in some circumstances, I have no ambitions of making it a signature look of my own. When looking through the work of photographers who turn to the technique time and time again I can sometimes get a little numbed by a certain sameness of feel. It leaves me to wonder if for some photographers the heavy neutral density filters are being brought to bear out of habit. I have my own filter to play with now so it remains to be seen how it goes for me. As always I'll keep you posted.