Nokton 50mm f/1.1 on R3A

D

dshooter

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Hi everyone,

Newbie question again ...

I just bought a new Nokton 50mm f/1.1 and using it on my R3A body. The lens is blocking about 1/3 of the viewfinder. Will using the external viewfinder help to overcome this? Or is it necessary to have external viewfinder?

Thanks very much.
 
Now you know the joys of having an ultra fast lens! An external viewfinder adds bulk and requires moving your eye position for every shot.. Learn to extrapolate what will be in your shot.
 
Thanks ... ah ... so the external viewfinder is only to compose and you cannot do the focusing through it?

Then I won't get it :) ... like you said, I will learn to extrapolate.

And yes ... I love the lens. :)
 
Glad you love the lens.

External finder won't be necessary. After a while, you will get used to it.

Or you can get the LH-7 when it comes out, it's supposed to be vented and you can see through... Alternatively shoot without the hood. :)
 
Thanks Chiif .. :) Glad to see you here too. I will consider not having the hood eventhough it looks cool with the hood actually :)
 
How is it focusing with such a fast lense on a relatively short base length? I mean is the focus where you tried to get it or often slightly off the target?

Anyone else have experience on this?
 
Sparrow said:
at 4ft a 50 f1:1 has a dof of 38mm, and a 75 at f1:2.5 is 39mm
Click to expand...

Ah indeed, I would never have guessed focal length is that significant. Also it seems that 90/3.5 is equally hard to focus then.

(Given the same distance of course, one tends to shoot farther away with a longer lens, maybe, but let's not get overly philosophical here.)
 
Sparrow said:
at 4ft a 50 f1:1 has a dof of 38mm, and a 75 at f1:2.5 is 39mm
Click to expand...

But that's when you shoot at the same distance, right? I mean you will get different magnification of your subject.
If you shoot the same subject with same composition, then you have to step closer with shorter lens to get same magnification, therefore, the DOF gets smaller...
 
Toni Nikkanen said:
Ah indeed, I would never have guessed focal length is that significant. Also it seems that 90/3.5 is equally hard to focus then.

(Given the same distance of course, one tends to shoot farther away with a longer lens, maybe, but let's not get overly philosophical here.)
Click to expand...

a 85mm f2 Zuiko when compared to a 50 f1.2 prompted me to look into DOF many years ago, I was surprised too
 
Toni Nikkanen said:
Ah indeed, I would never have guessed focal length is that significant. Also it seems that 90/3.5 is equally hard to focus then.

(Given the same distance of course, one tends to shoot farther away with a longer lens, maybe, but let's not get overly philosophical here.)
Click to expand...

Focal length has a huge effect on the dof.
 
hiromu said:
But that's when you shoot at the same distance, right? I mean you will get different magnification of your subject.
If you shoot the same subject with same composition, then you have to step closer with shorter lens to get same magnification, therefore, the DOF gets smaller...
Click to expand...


yes, but i don't think it compensates fully for the focal length, maybe someone has the maths to tell us, anyone?

I use a 105 f2.5 on an slr for head and shoulder portraits and a 50 f2 for a seated figure

PS I had a 180 f2 at one time, now that was character building closer in
 
Last edited:
If you stay out of the Macro range the DOF is only affected by aperture and magnification, i.e. same aperture and magnification = same DOF.
 
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