Tag Archives: autofocus

Three Tips for Making Better Railroad Photos

1) Use your foreground. Unless you’re a ballast enthusiast, avoid emphasizing the ballast. Too many railroad photographs suffer from excessive foreground clutter and other distracting elements, so when you’re composing an image pay attention to the bottom of your frame.

2) Watch your focus. Although most modern cameras have auto focus systems, too many use center-weighted auto-focusing sensors. These produce an unfortunate side-effect of encouraging novice photographers to center their subject, which tends towards bland and ineffective composition. More advanced cameras have tools such as variable focus points and focus locks that help you get around the centering problem.

Although an imperfect image, take notice the focus: A center weighted autofocus system may have resulted in the front of the locomotive appearing soft, while the hoppers at the center of the image being  tack sharp. Alternatively, I  may have had to alter the composition to suit the failings of the auto focus system, which would have produced a compromised photo.

3) Avoid Flare. One of the reasons traditional photography technique stressed over the shoulder lighting was to avoid the unpleasant effects of lens flare. This is caused when the primary light source hits the front element of your lens and cause streaks and patterns across your image while lowering overall contrast. You can make successful backlit photographs by finding ways to minimize direct sun or other primary light sources; stand in the shadow of a tree, building or other object; no shadows available? Make your own with a flat piece of cardboard, book, or spare copy of TRAINS magazine. One last point: while you should avoid flare, this doesn’t necessarily mean you should eliminate it entirely. In certain circumstances, a little flare can improve a photo. Watch the way Hollywood uses flare for dramatic effect.

To make this backlit shot work, I used a 28mm wide-angle lens and shaded the front element with my left hand to avoid unwanted lens flare. Notice how the clouds and foreground elements frame the primary subject, adding interest and balance without becoming overly distracting. Also, would a dark colored locomotive have produced an equally effective photo? The effect of slight backlighting on a silver train can result in a dramatic effect.

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Long Lens Auto-focus Check

One of the great challenges of working with long telephoto lenses is getting the focus where you want it.

The inherent nature of a telephoto lens produces a comparatively shallow depth of field (relative field of focus). The longer the lens, the less depth of field.

So where precision focus is important with a wide angle lens, it is critical with a long lens, unless, of course, your intent is to make soft images.

Placing focus is important to me, as I’ve learned various visual tricks for directing the eye within an image by clever use of sharpness. Sometimes when photographing trains, the optimal focus point is not at the front of the locomotive; however, in this case, that was precisely my objective.

One of the reasons I’ve embraced auto-focus cameras, was that about ten years ago I concluded that I couldn’t trust my eyesight to make precision focus, especially when I had to do it quickly.

Test photo looking toward Platform 10 at Heuston Station, view from Conynham Road.
Test photo looking toward Platform 10 at Heuston Station, view from Conynham Road.

Using my new Fuji X-T1, I made this image on Friday February 20, 2015 of an Irish Rail continuous welded rail train crossing the River Liffey at Islandbridge in Dublin.

Exposed with a Fuji X-T1 with 18-135mm lens set at 135mm; ISO 800, f5.6 1/500th second, ‘Velvia’ color profile.
Exposed with a Fuji X-T1 with 18-135mm lens set at 135mm; ISO 800, f5.6 1/500th second, ‘Velvia’ color profile.

I arrived at my location a bit winded and had only a few moments to make a test photo and set the focus point (the Fuji allows for easy adjustment of the desired focus point) before the train came into view.

The equipment performed perfectly! The front of the 071 class locomotive is razor sharp. Hurray!

Very tightly cropped portion of the above photo to check for sharpness. Considering  that I made the image hand-held of a moving train, I'd say the autofocus worked admirably.
Very tightly cropped portion of the above photo to check for sharpness. Considering that I made the image hand-held of a moving train, I’d say the autofocus worked admirably.

 

Exposed with a Fuji X-T1 with 18-135mm lens set at 135mm; ISO 800, f5.6 1/500th second, ‘Velvia’ color profile.

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