Monday, June 25, 2012
Focus Stack of a Salvia
Tuesday, June 19, 2012
Focus Stacking for Macro and Close-up Photography
Focus stacking is a relatively new digital photography technique which can, to me, produce startling results. To generate the images shown here, I utilized a focusing rail (Novoflex - Castel-L), my D700 camera and Nikon 105mm VR II lens combination, a steady tripod and Zerene Stacker software. Since, I am interested primarily in outdoor photography, I also now use some sort of mechanism to steady the target. A breeze is always blowing.
I always operate in the Manual exposure and focusing mode. The camera is arranged the appropriately aimed at the target and manually focused in LiveView mode to where the focus plane is just before the target and the first image is collected and then advanced in steps moving the focusing plane through the object collecting multiple images. The step increment is selected depending on the depth of field. Once collected all images are then processed identically. I generate Jpegs and the resulting stack is input into the software which creates an image made up of "in-focus" portions of each image. In this way, one still has the advantages of a sharp DOF fall-off in front of and behind the first and last image combined with a large DOF.
The first image is a stack of 30 images of a Poppy which is just blooming. The resulting images are still startling to me. One sees how each image plane is in focus as the rail is used to step through the scene, but the entire scene only becomes "in-focus" as it is processed.
To me the detail is just stunning.
The next three images are stacks of Thistle blooms. I searched for plants which had bright Magenta coloring. The first image is a close-up of the blossom which is just about to emerge. The focus distance was relatively close, so the DOF is narrow and about 50 slices were collected.
The second and third images were of a wider view and fewer images were needed.
As with both Macro and Telephoto photography, what one sees with the naked eye and through the lens, is strikingly different but with stacking the difference is even greater. Through the macro lens, one sees the magnified scene but only a narrow region is in focus. When all put together by the software, the results show all the detail in each image. It really is amazing!
I always operate in the Manual exposure and focusing mode. The camera is arranged the appropriately aimed at the target and manually focused in LiveView mode to where the focus plane is just before the target and the first image is collected and then advanced in steps moving the focusing plane through the object collecting multiple images. The step increment is selected depending on the depth of field. Once collected all images are then processed identically. I generate Jpegs and the resulting stack is input into the software which creates an image made up of "in-focus" portions of each image. In this way, one still has the advantages of a sharp DOF fall-off in front of and behind the first and last image combined with a large DOF.
The first image is a stack of 30 images of a Poppy which is just blooming. The resulting images are still startling to me. One sees how each image plane is in focus as the rail is used to step through the scene, but the entire scene only becomes "in-focus" as it is processed.
To me the detail is just stunning.
The next three images are stacks of Thistle blooms. I searched for plants which had bright Magenta coloring. The first image is a close-up of the blossom which is just about to emerge. The focus distance was relatively close, so the DOF is narrow and about 50 slices were collected.
The second and third images were of a wider view and fewer images were needed.
As with both Macro and Telephoto photography, what one sees with the naked eye and through the lens, is strikingly different but with stacking the difference is even greater. Through the macro lens, one sees the magnified scene but only a narrow region is in focus. When all put together by the software, the results show all the detail in each image. It really is amazing!
Friday, May 20, 2011
Abandoned Mine - Historic Tintic Mining District
Discovered this abandoned mine near Eureka, UT in the eastern slopes of the East Tintic Mountains overlooking Utah Valley. The first image shows the overburden piles of yellow to orange rock. The stone leaches so there is a pool of deep orange water from the recent rains in the area. The age of the Juniper trees growing in the overburden indicates that this mine has been abandoned for many years.
Two images of the structure covering the entrance to a mine in the same area. There are active mines nearby, notably the Trixie silver and gold mine which is still active.
Two images of the structure covering the entrance to a mine in the same area. There are active mines nearby, notably the Trixie silver and gold mine which is still active.
Tuesday, May 17, 2011
Grain Elevator in Utah's Tintic Valley
This abandoned grain elevator is just off the State Route 36 near Eureka, Juab County. It's just off the side of the road adjacent to the UP railroad tracks. Its completely out of place. There is nothing nearby. Obviously, it draws the attention of graffiti artists and has for some time.
The clouds were great. I use my 12-24mm DX lens on my D700 shooting in the FX mode and just never go wider that 17 mm and it works fine.
The clouds were great. I use my 12-24mm DX lens on my D700 shooting in the FX mode and just never go wider that 17 mm and it works fine.
Friday, May 13, 2011
Bridal Veil Falls in Utah's Provo Canyon
Images of Bridal Veil Falls, Provo Canyon, UT. I slowed the shutter speed by using a 64X neutral density filter from B+W. I also moved as far away from the falls as reasonable, almost back to the main highway in Provo Canyon. This moved me up and made the upper reaches of the falls more visible. The snow pack on the Wasatch Mountains is way above normal so a fair amount of water is coming down the falls. I used my 70-200 MM lens which allowed my to zoom into the see the details of the lower falls.
Details of the lower falls
Saturday, April 30, 2011
Andrew on the Salt Flats
Andrew is a trooper. He seems to tolerate endless photos.
His dad is taking a DSLR movie and he looks at grandpa.
Oh boy will this ever end?
OK, I'll pose. I used a small amount of fill flash to what I think is good effect.
His dad is taking a DSLR movie and he looks at grandpa.
Oh boy will this ever end?
OK, I'll pose. I used a small amount of fill flash to what I think is good effect.
Wednesday, April 20, 2011
Allison on the Bonneville Salt Flats
For Spring Break, we took the kids to the Salt Flats near Wendover, UT. This shot is actually on the Bonneville Speedway which is deserted this time of the year. Speed trials start after the surface dries out. Allison is a pro at candid modelling. Just let her do her things and try to get a great shot. Took the chairs as props for this white plain. Fortunately, there was cloud cover, because there is a lot of light like with snow.
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