Canon EF 85 mm f/1.8 USM
9. Ghosting, flares and transmission
 |
It would be difficult to complain about anything here. In a quite wide range - from 450 to over 650 nm - the transmission reaches over 90%, being at its peak (92%) for green-yellow light. Taking into account the fact that there are 7 groups of elements in the tested lens so we deal here with 14 air-to-glass surfaces, you can calculate easily that on one surface we lose about 0.6% of light. Such a result doesn’t bowl us over because lenses with the best anti-reflection coatings, produced nowadays, can get to the level of 0.2%. Such coatings, though, are used only in devices from the top-end price segment and the Canon EF 85 mm f/1.8 USM doesn’t belong there for sure. On the other hand, though, the Samyang 1.4/85, cheaper than the Canon, featured better coatings because in its case the transmission could even reach as much as 98%.
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 photos below show how the Canon fares against bright light. Artifacts are visible both on the APS-C sensor and on full frame. Fortunately they are not especially big.
 |
 |
