DPReview.com is closing April 10th - Find out more

RF extender experiences with RF 100-500 1.4x vs 2.0? Locked

Started Oct 16, 2020 | Discussions thread
This thread is locked.
bernie r Contributing Member • Posts: 536
Re: RF extender experiences with RF 100-500 1.4x vs 2.0?

Franz Kerschbaum wrote:

Sorry, please take a geometric optics 101 course. What you write is in contradiction with basic physics. Repeating it, especially in such an opodictic way does not make it any better.

It's 8:30 AM here, light but overcast, at 1/400th f5.6 I need ISO 5000 to get a lit subject on R5, at f10 needs 16,000. That's an absolutely massive difference, you don't need a course in optics to tell you that. But maybe you took one and that's why you feel clever.

Post (hide subjects) Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow