I’m using a similar setup to many of the other lens battles I’ve tested….a high detail target to provide information on resolution, with a faceted glass decanter in the background to provide specular highlights and help in evaluating bokeh. The test camera, the Olympus OM-D E-M5, was set on a tripod, triggered with the 2 second self time to avoid movement from pressing the shutter, and in-body IS was set off. Images were taken starting at f/1.8 and stopping down in one stop increments to f/5. The Panasonic also was tested at f/1.4. When switching lenses, the camera was left on the tripod in the exact position while the lenses were swapped out.
Some notes: As you can see in the images below, despite both lenses being marked as 25mm lenses, the Panasonic Leica has a slightly longer focal length. I can’t say whether the Leica is longer than 25mm or the Olympus is shorter than 25mm, though in comparison to other lenses I own, I’d lean towards the Olympus being slightly shorter than marked.
As a result on the Panasonic being slightly longer, the 2/3 stop aperture difference between the lenses is actually slightly more significant than would be expected. Below are the full shots of both lenses wide open. While the difference in depth of field and background blur isn’t huge, it is certainly noticeable, especially in the far reaches of the background. As you’ll see in the bokeh comparison on Page 2, the Panasonic seems to enjoy closer to 1 stop of depth of field advantage over its Olympus sibling.
It is worth nothing that this is a single test at a single focus distance. I have not had a chance to do a formal test at further focus distances, but this test was chosen to give a nice balance between focus distance and shallow depth of field abilities. Focus distance was approximately 0.7m, which is somewhat close, but well short of the minimum focus distance of both lenses (0.25m for the Olympus and 0.3m for the Leica).
I’m using a similar setup to many of the other lens battles I’ve tested….a high detail target to provide information on resolution, with a faceted glass decanter in the background to provide specular highlights and help in evaluating bokeh. The test camera, the Olympus OM-D E-M5, was set on a tripod, triggered with the 2 second self time to avoid movement from pressing the shutter, and in-body IS was set off. Images were taken starting at f/1.8 and stopping down in one stop increments to f/5. The Panasonic also was tested at f/1.4. When switching lenses, the camera was left on the tripod in the exact position while the lenses were swapped out.
Some notes: As you can see in the images below, despite both lenses being marked as 25mm lenses, the Panasonic Leica has a slightly longer focal length. I can’t say whether the Leica is longer than 25mm or the Olympus is shorter than 25mm, though in comparison to other lenses I own, I’d lean towards the Olympus being slightly shorter than marked.
As a result on the Panasonic being slightly longer, the 2/3 stop aperture difference between the lenses is actually slightly more significant than would be expected. Below are the full shots of both lenses wide open. While the difference in depth of field and background blur isn’t huge, it is certainly noticeable, especially in the far reaches of the background. As you’ll see in the bokeh comparison on Page 2, the Panasonic seems to enjoy closer to 1 stop of depth of field advantage over its Olympus sibling.
It is worth nothing that this is a single test at a single focus distance. I have not had a chance to do a formal test at further focus distances, but this test was chosen to give a nice balance between focus distance and shallow depth of field abilities. Focus distance was approximately 0.7m, which is somewhat close, but well short of the minimum focus distance of both lenses (0.25m for the Olympus and 0.3m for the Leica).
การแปล กรุณารอสักครู่..
