Sunday, May 29, 2016
Sunday, May 08, 2016
I'm still in a creative funk. I'm not inspired by much. Maybe it's the fact I'm embroiled in trying to gain a new drivers license and it's eating all my time and all my mental space. So, I hauled out another pair of magazine pages, taped them to a wall and compared another bunch of lenses.
Here is the (by now standard) comparison setup -
- Sony A6000, 100 ISO, AWR converted in Sony's software
- Big Beefy Manfrotto tripod
- Sigma 60mm f/2.8 EX DN E as the control optic - it's sharp sharp sharp
- Old Nikon manual focus lenses with Zhongyi Lens Turbo II
- 135mm f/2.8 pre-Ai
- 300mm f/4.5 pre-Ai
- Sony 55-210mm f/4.5-6.3 OSS E-mount
- Tamron 150-600mm f/4.5-6.3 at 257mm (according to the EXIF data)
The goal was to see under normal contrast conditions how the new and old lenses compared. Here is the scene:
Here are the comparison results (look at this image at full resolution to inspect the various subtle differences):
The Sony 55-210mm lens did not focus correctly. I used the camera's AF and something is not correct. Look at the edges of the frame. They're sharper than the center. That is very typical of a lens that's mis-focused.