Posts Tagged ‘tips’

Guanajuato City Scenes

Sunday, January 17th, 2010

An important element of photographing while traveling in other countries is the ability to take what comes.  Last Saturday I carefully penciled out my shooting schedule for the next three weeks in and around Guanajuato, Mexico.  That night I came down with some sort of stomach ailment that confined me to bed until Wednesday.  While feeling much better a week later, I’m still regaining my strength and can’t wander too far from a bathroom.  As a result I didn’t get nearly as much photography done as I hoped and now I need to adjust my plans.  But that’s OK.  There are some things you can’t control when in another country.

Pink House on Calle Tecalote

Pink House on Calle Tecalote

As my condition improved through the week I went out to take photos as I was able.  The weather has remained mostly cloudy and a bit drab, but there have been moments of the brilliant light that that Guanajuato is known for.

The unusually cold and wet conditions reminded me of some tips for making the best of urban photography at times when the weather is less than ideal.  First, since cities provide their own light, twilight and night photography are opportunities for great light even when the weather is poor.  There are two periods each day, around sunrise and sunset, when  cities come alive  with their own light, even on overcast days.  During twilight a dull gray sky will appear blue while city lights glow in a variety of colors.  A second tip is to be prepared to move quickly during weather breaks.  I was able to quickly jump into action a couple of times when sun broke through the clouds for brief periods.  The photo ops didn’t last long, but the light was particularly dramatic.

Brief Sunbreak at Sunset

Brief Sunbreak at Sunset

The images in this post are of city vistas and of some of the notable landmarks around Gunajuato.  I took them either in twilight or night time lighting conditions, or during a few breaks in the cloudy weather.  I hope  you enjoy.

Templo San Diego

Templo San Diego

Basílica de Nuestra Señora de Guanajuato

Basílica de Nuestra Señora de Guanajuato

Teatro Juárez

Teatro Juárez

Iglesia de San Francisco

Iglesia de San Francisco

Stormy Sunrsie

Stormy Sunrise

Longer Exposures For More Saturation and Luminosity

Monday, October 6th, 2008

 

In situations involving low levels of light it can often be beneficial to obtain a longer exposure to allow the sensor/film more time to absorb color and glow. There can be a lot of color and light bouncing off clouds and hills that our eyes can’t pick up. Cameras are able to “see” into low light scenes by leaving the shutter open and collecting more light. If I really want to pull as much light and color from a scene as possible I’ll often use a neutral density filter (ND) along with my usual filter stack (polarizer and graduated neutral density when needed) and also set the ISO on my camera down to 50 in order to extend what was already going to be a long shutter speed.

A neutral density filter is a neutral gray piece of glass or plastic that is placed in front of the lens.  Since it is neutral it doesn’t change the color of the image or do any other special effects.  All it does is reduce the amount of light that can pass through the lens to the image sensor or film (kind of like wearing color neutral sunglasses).  By reducing the amount of light coming in, the exposure time needs to be longer to get a properly exposed image.  One effect of longer exposure times is the blurring of anything moving within the image (water, clouds, wind blown trees, etc.).  Another affect is that if there is low level colored light washing over the scene it will saturate in the image over time.  I use Singh-Ray neutral density filters because they are some of the most color neutral filters available and give excellent results.  I also use Singh-Ray Graduated Neutral Density (GND) filters.  GND filters are neutral gray at the top and fade to clear near the middle.  They are used to hold back the light in one part of an image (like a bright sky) in order to balance the light across the scene.

The two photos above were taken one right after the other, the first at 6 sec @ f/20, ISO 100 with a 3 stop GND for the sky. The second was taken at 30 sec @ f/20, ISO 50 with a 3 stop GND and a 3 stop ND. Quite a difference 24 seconds of shutter time can make.