Monthly Archives: April 2014

T/S Stitch

I like photographing with my Tilt/Shift lenses.  Besides using them for single image photos, I’ll often use them to make stitched images.  I keep the tilt and shift functions in different axis, so that I can tilt to reposition the plane of focus, and still be able to shift left and right.  If my camera is mounted in a horizontal position, the resulting image when stitched in Photoshop is in a panoramic format.  But if I mount the camera vertically, and then shift left and right, the final image is just slightly squarer than 4 x 5 proportions.  Why do this?  Easy answer: file size.  With my D800E, the final 16-bit file is roughly 400 MB.

Autumn maple leaves.In the Bald Hills, Redwoods National Park.Sandstone wall, Nevada.Torres del Paine, Chile.Columbia Gorge, Oregon.White Sands National Monument, New Mexico.Valley of Fire, Nevada.Columbia Gorge, Oregon.Snow in the Sonoran desert, Arizona.Abraham Lake, Alberta.

D800 + ND = Magenta cast

Images taken with heavy ND filters will occasionally show a strong magenta cast.  Almost all ND filters transmit some infrared wavelengths, and this IR light is one of the primary causes of the magenta cast.  At the same time, some digital camera sensors are more sensitive to IR than others, and in my experience the Nikon D800/D800E twins fall into this group.  However, for most situations there is a simple solution.

My favorite ND filter is the 7-stop Tiffen IRND 2.1 (which I think is an excellent bargain in terms of ND filters).  But even this filter, with has some IR control as part of its design, can result in magenta contamination.  Here’s a frame taken at the edge of a waterfall using this filter and my D800E, with the lens pointing almost straight down.  The resulting image is a worst case example.


The solution I’ve found:  close the camera’s eyepiece shutter.  No matter if mirror lockup is used, or the timer delay, or whatever…close the eyepiece shutter.  Under any circumstance, the D800/D800E cameras are very sensitive to light coming through the eyepiece, so closing the eyepiece whenever shooting from a tripod is a good idea.  In the above example, the eyepiece is open and positioned toward the sky.  Here’s another shot, same situation as the previous image, but with the eyepiece shutter closed.  Big difference.