>>3244090CA is easily removed with 2 elements of different glass types (crown & flint) coupled together as one lens called an achromatic lens. Other types of aberrations are corrected with other means; spherical aberrations via diaphragm. A lot of times the extra elements are just to shorten the barrel of the lens. The biggest problem with lenses is how fast/bright they are. Getting a fast lens becomes very expensive. Which is why a lens like the "Leica Noctilux-M 50mm f/0.95 ASPH" costs more than my house. It has 8 elements.
>>3244095>weather testing a camera that isn't weatherized against cameras that are weatherized>water gets inSherlock would be proud.
