What is the differences between Wide Angle Adapters and Wide Angle Converters?

• Fixed focal adapters lose focus when the focal length on the camera lens is changed (i.e. zooming).  For this reason the adapter is not recommended when live zooms are necessary. Note: Typically it is possible to change the zoom level a small amount while still retaining focus.

• Normal focusing operation is no longer possible when using an adapter.  It is necessary to the use the macro focus control instead.  For mini-DV cameras that do not have a macro focus control, the lens will typically retain focus from the widest angle to approximately 1/4 of the zoom range.

• With zoom-through converters normal lens operation is not affected.  Focus operations will work the same as before and focus will not be affected when the focal length is changed (i.e. zooming).