J O N A T H A N JK . C O M

Panasonic Lumix/Leica 25mm Prime

Making Comparisons

What I’ve done is organise a few setup shots with all three lenses to measure the differences between each and with:

• Minimum aperture for each lens
• f16 selected between all 3 lenses
• f22 for making comparisons to f16

What I am going to do then is measure bokeh with minimum apertures and lens sharpness equally at f16 and just out of interest at f22 to see the difference. This excludes the Leica lens as it is limited to f16 but it will be interesting to see what the other lenses can do.
The minimum focusing distance was something I thought was interesting and have taken some pictures to show that between the three lenses. The images will be unprocessed from best quality Raw, using Lightroom 2 for exporting the Raw files to full quality jpegs. I’ve shot at ISO 100 as well. PLEASE NOTE, these are full size quality jpegs!

Focusing with the Leica 25mm Prime
I’ve set up these series of images so each focus point has something of interest at different distances to each other, the Olympus has three focus points. I have a Cactus on the left, Yellow Pages in the distance in the center and my Optimus Prime Transformer on the right as the primary subjects of interest. Everything else in the image will act as a guide to help you make your own judgements, for example behind the Yellow pages is a foldable washing line (to judge image sharpness with lower apertures and to see how much difference Bokeh makes) also on the table is some literature with text reading away from the camera.

You can see right away the bokeh present at f1.4 in the previews!

If you can’t tell where I have focused, I’ve started first on the Cactus Pot, then the Yellow Pages and then Optimus Primes’ left leg, read the images from left to right for all examples given.