Hi!
I really should be embarrassed to ask this,but i'm over 50 and i can
claim the senior moment disorder now.lol
I am over 30, but I think I had my ignorance moment when I read your
questions...
Does the 2x make the lens a 400 from a 200 AND the f stop from f4 to
f 8
I think that if
- Original Message -
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Wednesday, October 08, 2003 2:00 AM
Subject: 2x converter,K-M42 adaptor metering
Does the 2x make the lens a 400 from a 200 AND the f stop from f4 to f
8
A 2x converter costs 2 stops of light. Your f/4 lens
Hi Dave,
On Wed, 8 Oct 2003 08:00:44 US/Eastern, [EMAIL PROTECTED] wrote:
I really should be embarrassed to ask this,but i'm over 50 and
i can claim the senior moment disorder now.lol
That's OK. I've been having them since I was a senior in high school.
:-)
I put the K-M42 adaptor on the
Hi Dave,
On Wed, 8 Oct 2003 08:00:44 US/Eastern, [EMAIL PROTECTED] wrote:
I really should be embarrassed to ask this,but i'm over 50 and
i can claim the senior moment disorder now.lol
That's OK. I've been having them since I was a senior in
A 2x TC will cost you at least two full stops. (More depending on the TC
but that's another problem).
At 04:33 PM 10/8/03 +0400, you wrote:
Hi!
I really should be embarrassed to ask this,but i'm over 50 and i can
claim the senior moment disorder now.lol
I am over 30, but I think I had my
Hi!
Peter, I just did not know that 2x applies not only to focal length
but to other parameters as well. I actually thought that the light
loss is __totally__ different parameter that varies from converter to
converter.
That's because the only converter I have, that being Panagor Macro
Let's look at it this way. A 200mm lens at f4 has a 50mm aperture.
Now with the 2x converter it becomes a 400mm with the same 50mm
aperture. 400 / 50 = 8. So the f-stop is f8. From this we can deduce
that when using a 2x teleconverter out actual f-stop is double the
marked f-stop (e.g.
I have the Vivitar version of this converter and that is one of the other
things that can change the light reaching the film plane.
I have noticed that nothing I want to do actually increases the amount of
light reaching the film plane. ;)
At 09:51 PM 10/8/03 +0400, you wrote:
Hi!
Peter, I
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