All this talk about "equivalence" is silly

Started Jun 10, 2011 | Discussions thread
Fabian628 Senior Member • Posts: 2,447
Re: Really.

Great Bustard wrote:

Fabian628 wrote:

is this part true as well?

Case 2: if your primary concern is reach, then a 300 f/4 lens is decidedly similar to a 480 f/4 lens on a 1.6 crop camera, not 480 f/5.6.

If your primary concern is reach, then your primary concern is AOV, not aperture. So your "primary concern" would be on comparing 300mm to 480mm, and not care about whether it's f/4 or f/5.6.

But the fact of the matter is that the aperture diameter of 300mm f/4 and 480mm f/5.6 are nearly the same, which means the DOF will be nearly the same (for the same perspective and framing).

have you even read this post He is claiming it appears as a 480 f/4 NOT a 480 f/5.6 which you have clearly shown it does behave like.

The fact I mention this is that the OP does not mention DoF, one thing that is worth talking about when comparing different size sensors.

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