200 F2 with TC Question

Started 2 months ago | Discussions thread
ForumParentFirstPrevious
Flat view
londonshooter Regular Member • Posts: 136
200 F2 with TC Question

i have a 200 F2 and also a 2.0 tcIII. converter which gives 400 at F4 . Im considering a 1.7.

This is where i get lost here ive seen quite a few vids on youtube and such saying that the 1.7 gives a reach of 340 at 3.3 and i think the 1.4 gives a reach of 280.

So im presuming that althou the 2.0 converter doubles it to 400 the 1.7 is in effect not equate to a reach of 370 but is 340 in the way the maths works as does the 1.4 equate to a reach of 280.

ForumParentFirstPrevious
Flat view
ForumParentFirstPrevious
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow