Venus Optics LAOWA 7.5 mm f/2 MFT
8. Vignetting
| Olympus E-M5 II, f/2.0 | Olympus E-M5 II, f/2.8 |
|
|
| Olympus E-M5 II, f/4.0 | Olympus E-M5 II, f/5.6 |
|
|
The aperture of f/2.0 combined with an angle of view of 110 degrees and very small dimensions of the lens made us earlier worry about the vignetting. Our worries were justified… At the maximum relative aperture the lens loses as much as 67% (−3.24 EV) of light, settling a kind of negative record for the Micro 4/3 sensor. It’s not the end of its problems. The vignetting reacts weakly to stopping down the aperture – by f/2.8 you still deal with a high level of brightness loss, that of 59% (−2.57 EV), and also by f/4.0 you don’t have any problems to notice it as it amounts to 51% (−2.04 EV). A distinct level of this aberration you see by f/5.6, f/8.0 and f/11.0 where we obtained the following results: 45% (−1.75 EV), 41% (−1.54 EV) and 40% (−1.48 EV) respectively.
Please Support UsIf you enjoy our reviews and articles, and you want us to continue our work please, support our website by donating through PayPal. The funds are going to be used for paying our editorial team, renting servers, and equipping our testing studio; only that way we will be able to continue providing you interesting content for free. |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| Olympus O-MD E-M5 II, JPEG, f/2.0 |
 |
