Samyang 21 mm f/1.4 ED AS UMC CS
8. Vignetting
| X-E1, JPEG, f/1.4 | X-E1, RAW, f/1.4 |
|
|
| X-E1, JPEG, f/2.0 | X-E1, RAW, f/2.0 |
|
|
| X-E1, JPEG, f/2.8 | X-E1, RAW, f/2.8 |
|
|
In the case of JPEG files at the maximum relative aperture the vignetting reaches a significantly high level of 45% (−1.73 EV). By f/2.0 it decreases to 29% (−1.00 EV) and by f/2.8 it still is easy to perceive, amounting to 20% (−0.64 EV). Further stopping down is not especially effective as by f/4.0 that aberration reaches a value of 19% (−0.62 EV).
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. |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
The results you get for RAW files are just slightly higher. By f/1.4 the brightness loss in the frame corners amounts to 50% (−2.00 EV), by f/2.0 it decreases to 36% (−1.28 EV), and by f/2.8 it drops further to 26% (−0.87 EV). Like in the previous case after that point the stopping down of the aperture doesn’t improve the situation almost at all because by f/4.0 and by f/5.6 the vignetting level amounts to 25% (−0.83 EV).
 |
