Barry_Green
Moderator
I'm not following you at all here. If you buy a basic Brevis for $883, you can't use it for anything -- there's no achromat. You have to spend the $1125 in order to have all the pieces you need. And then you have to ship it. So the end cost is around $1200. So how is that less expensive than a $1200 Letus Extreme? And it's still upside-down.
So if we do as you suggest and get the flip module instead, and lose another 1/2 stop of light) so now you've spent $1300 and have an adapter that's (ostensibly) less light-sensitive than the $1200 Letus...
I'm not following your math.
Now, if the Brevis stays at $1300, and the Letus goes up someday to $1500, then maybe you have a valid comparison. But even then the Letus will likely transmit more light; at that point it comes down to comparing image sharpness.
But the initial posting made it sound like the other adapters were less expensive, and I can't work the calculator to make that statement be true...
So if we do as you suggest and get the flip module instead, and lose another 1/2 stop of light) so now you've spent $1300 and have an adapter that's (ostensibly) less light-sensitive than the $1200 Letus...
I'm not following your math.
Now, if the Brevis stays at $1300, and the Letus goes up someday to $1500, then maybe you have a valid comparison. But even then the Letus will likely transmit more light; at that point it comes down to comparing image sharpness.
But the initial posting made it sound like the other adapters were less expensive, and I can't work the calculator to make that statement be true...