spreadsheet showing why M8 and FF have same DOF

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interesting

interesting

I'll have to try to remember to pack a baseball with my lunch on my next trip to LIGO...

Chris101 said:
Measured? I don't think so.

My 'back of the envelope' calculations say the Lorentzian contraction of a baseball thrown at 100 mph would be on the order of 10^-16 meters. Current thinking in holographic theory precludes a measurement that small.
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rxmd said:
Was there an original question?
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Yes, there was: When using an M-lens on the M8, can you still use the DOF marks for zone focusing as you can on a 35 mm camera or an M9?

Now, the way ampguy ansers this is: yes: DOF is exactly the same. The secret is that he crops both shots, the M8 one in the camera, and the M6/7/P/9 one after printing. Well duh.

While correct, this answer (and the method) is also completely irrelevant.

@ ampguy: And now you're telling us the mass of moving objects gets smaller, not bigger. What are you up to next?

@ all: By the way, Schrödinger's paradoxon states very clearly that you won't know if the cat's claws are in focus until you open the camera back! Ha ha! Made you do it before rewinding!!! 😀
 
kossi008 said:
@ all: By the way, Schrödinger's paradoxon states very clearly that you won't know if the cat's claws are in focus until you open the camera back! Ha ha! Made you do it before rewinding!!! 😀
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Well they might be infocus but not sharp or they might be sharp but not in focus or they might be sharp and in focus or they might not be sharp and not in focus. Shroedinger didn't count on there being four different states😀
 
explanation

explanation

E = (gamma)*mass*velocity

Here gamma is a relativistic factor that is greater than unity. So, one could consider the
factor (gamma)*mass a new mass...

Now for DOF:

I'm not doing any cropping on the M8,
the M8 with it's 32.4mm diag. sensor is what it is.

The M8 has the lens I selected for it, and the
distance I selected for the view I wanted.

The legacy film camera using the same lens on
the same tripod gives some "overscan" that I
don't concern myself with, just as I don't print
sprocket holes when I scan film.

For me, the DOF is the same between M8 and M6. If it's
not for others, can you show me in a paper print?

I've also not had to move my Leica, Zeiss, or CV focus
barrels any *extra* stops when using hyperfocal distance settings
with the RD1 with even smaller sensor than the M8 (~26mm diag) and M4P/M6.

Perhaps folks who carry both FF and a u4/3 while
exchanging lenses see something or have to move
something?

kossi008 said:
Yes, there was: When using an M-lens on the M8, can you still use the DOF marks for zone focusing as you can on a 35 mm camera or an M9?

Now, the way ampguy ansers this is: yes: DOF is exactly the same. The secret is that he crops both shots, the M8 one in the camera, and the M6/7/P/9 one after printing. Well duh.

While correct, this answer (and the method) is also completely irrelevant.

@ ampguy: And now you're telling us the mass of moving objects gets smaller, not bigger. What are you up to next?

@ all: By the way, Schrödinger's paradoxon states very clearly that you won't know if the cat's claws are in focus until you open the camera back! Ha ha! Made you do it before rewinding!!! 😀
Click to expand...
 
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> Originally Posted by antiquark
> "The calculator doesn't lie!"

My Wang 360K does. A couple of the circuit boards need repair, one of the Nixie tubes is out. It has a stuck bit in the ALU. And I doubt the card reader still works reliably.
 
bang.jpg
 
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ampguy said:
I'm not doing any cropping on the M8
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You don't have to, after all; the M8 does it for you.

The legacy film camera using the same lens on
the same tripod gives some "overscan" that I
don't concern myself with
Click to expand...

From the technical side, just as one man's "overscan" is another man's crop, this just about answers its all.

And from the picture taking side, I suggest following the example and not concerning oneself with it too much.

Now I think we can return the discussion to Wang CLAs and nixie tubes, I liked that part better anyway. While I'm still here, I need to try and find myself some of the old Soviet calculators, such as a C3-07 or a B3-34.
 
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I've been using the Nikkor 5cm F1.4 on the EP2.

The DoF scale did not change at all.

I was going to say it did not change "One Bit". But the EP2 is digital. And so is the M8. the M3 is not Digital. My DCS200ir is both film and digital, loaded with film there is no crop factor, but used as digital the crop factor is 2.5x. the DOF scale does not change, all those lines stay in the same place when you use it as film for digital.

So how fast will the gun accelerate to?
 
Brian Sweeney said:
My DCS200ir is both film and digital, loaded with film there is no crop factor, but used as digital the crop factor is 2.5x. the DOF scale does not change
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But what happens to DOF in the infrared?

And what about redshift? Particularly as the topic moves away from photography at high speeds? How does that affect DOF?

Nice camera BTW. A true classic. I think all cameras should have a hard disk and a SCSI interface. If I were a collector I'd have to have one. Got a DCS100, too?
 
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