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OMG...tell me thiis guy is wrong about micro four thirds

Started 6 months ago | Discussion thread

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Bob Meyer

Veteran Member • Posts: 4,859

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Re: Are any lenses marked with physical aperture and FOV at distance?

In reply to Erik Magnuson, 6 months ago

Erik Magnuson wrote:

Bob Meyer wrote:

So the two things that affect DOF when shooting are aperture diameter (not the same as f-stop) and distance.

The problem is that lenses are not marked with physical aperture and FOV at a fixed distance; they are marked with focal length and f-stop. If you were carrying both cameras and wanted to take a comparable photo with each, the easy way is to use the crop factor times the f-stop and focal length to choose lenses and apertures.

--
Erik

Well, I'm not really sure why I'd want to do that, but even granted that's an easy way to do so, I think there's still value in understanding what's really going on. I see little advantage to passing on misinformation.

--
OM-D for sale; see classifieds forum.

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Post (hide subjects)	Posted by	When
OMG...tell me thiis guy is wrong about micro four thirds	furb	6 months ago
Re: OMG...tell me thiis guy is wrong about micro four thirds	Jim T	6 months ago	6
Re: OMG...tell me thiis guy is wrong about micro four thirds	sbszine	6 months ago	8
Re: OMG...tell me thiis guy is wrong about micro four thirds	WT21	6 months ago	4
Re: OMG...tell me thiis guy is wrong about micro four thirds	sansbury	6 months ago
Re: OMG...tell me thiis guy is wrong about micro four thirds	Paul Amyes	6 months ago	2
Re: OMG...tell me thiis guy is wrong about micro four thirds	pdelux	6 months ago
Re: OMG...tell me thiis guy is wrong about micro four thirds	Paul Amyes	6 months ago	2
Geeezzz, not only did he set up the scene....	Ben Herrmann	6 months ago
Re: Geeezzz, not only did he set up the scene....	HornOUBet	6 months ago
Not quite right.	Bob Meyer	6 months ago	3
Re: Not quite right.	Paul Amyes	6 months ago	1
Re: Not quite right.	Bob Meyer	6 months ago
Re: Not quite right.	Detail Man	6 months ago	3
Correction: Not quite right ... but getting there.	Detail Man	6 months ago	1
Re: Not quite right.	Moti	6 months ago
Re: Not quite right.	Detail Man	6 months ago	1
Re: Not quite right.	Moti	6 months ago
Re: Not quite right.	Paul Amyes	6 months ago
Re: Not quite right.	Detail Man	6 months ago	1
Re: Not quite right.	Ulric	6 months ago
It doesn't	Moti	6 months ago
Why Print/Display Viewing Size and Viewing Distance References Matter	Detail Man	6 months ago	1
The thing is...	Great Bustard	6 months ago
Re: The thing is ...	Detail Man	6 months ago	1
Re: The thing is ...	Great Bustard	6 months ago
Re: The thing is ...	Detail Man	6 months ago
Prints and pixels.	Guy Parsons	6 months ago
Re: Prints and pixels.	Detail Man	6 months ago
But that's my point.	Great Bustard	6 months ago
Re: But that's my point.	Guy Parsons	6 months ago
Then what you're saying is...	Great Bustard	6 months ago
Re: Then what you're saying is...	Guy Parsons	6 months ago
Re: Then what you're saying is...	Great Bustard	6 months ago
Re: But that's my point.	Detail Man	6 months ago	1
Re: The thing is ...	Moti	6 months ago
Re: The thing is ...	Detail Man	6 months ago
Re: The thing is ...	Moti	6 months ago
Correction to text of: Why Print/Display Viewing Size and Viewing Distance References Matter	Detail Man	6 months ago	1
Are any lenses marked with physical aperture and FOV at distance?	Erik Magnuson	6 months ago
Re: Are any lenses marked with physical aperture and FOV at distance?	Bob Meyer	6 months ago
Re: Are any lenses marked with physical aperture and FOV at distance?	Erik Magnuson	6 months ago
Re: Not quite right.	Detail Man	6 months ago	1
Exactly uncorrect	clengman	6 months ago
Format, Viewing Size, Viewing Distance Independent Background Blur Metric	Detail Man	6 months ago	1
Re: Exactly uncorrect (yes, you are)	Bob Meyer	6 months ago
Re: Exactly uncorrect (yes, you are)	Detail Man	6 months ago	2
Re: Not quite right.	Moti	6 months ago	1
Re: Not quite right.	Detail Man	6 months ago
Re: Not quite right.	Moti	6 months ago
Re: Not quite right.	Detail Man	6 months ago	1
Re: Not quite right.	mapgraphs	6 months ago
Re: Not quite right.	nrwhitman	6 months ago
Re: OMG...tell me thiis guy is wrong about micro four thirds	boxerman	6 months ago	1
Re: OMG...tell me thiis guy is wrong about micro four thirds	Paul Amyes	6 months ago	1
Re: OMG...tell me thiis guy is wrong about micro four thirds	Pete Berry	6 months ago
Well , almost right BUT	Harold66	6 months ago
Re: Well , almost right BUT	Detail Man	6 months ago	1
Re: Well , almost right BUT	Harold66	6 months ago
Re: Well , almost right BUT	Moti	6 months ago
Re: Well , almost right BUT	Detail Man	6 months ago	2
Re: Well , almost right BUT	Ken Strain	6 months ago
Re: Well , almost right BUT	Harold66	6 months ago
Re: Well , almost right BUT	Moti	6 months ago
Re: Well , almost right BUT	Harold66	6 months ago
Re: OMG...tell me thiis guy is wrong about micro four thirds	rakore	6 months ago	1
Re: OMG...tell me thiis guy is wrong about micro four thirds	Olyroo	6 months ago
Re: OMG...tell me thiis guy is wrong about micro four thirds	Adamant	6 months ago	3
Re: OMG...tell me thiis guy is wrong about micro four thirds	RickPick	6 months ago
Re: OMG...tell me thiis guy is wrong about micro four thirds	joseluisherranz	6 months ago
Re: OMG...tell me thiis guy is wrong about micro four thirds	bgalb	6 months ago	2
Re: OMG...tell me thiis guy is wrong about micro four thirds	maoyama	6 months ago
Re: OMG...tell me thiis guy is wrong about micro four thirds	M Hamilton	6 months ago
Re: OMG...tell me thiis guy is wrong about micro four thirds	Ulric	6 months ago
Mostly correct, but not the whole story...	bcalkins	6 months ago	6
Re: Mostly correct, but not the whole story...	Erik Magnuson	6 months ago
Re: Mostly correct, but not the whole story...	gandalfII	6 months ago
He is assuming you are a lazy photographer	SaltLakeGuy	6 months ago	2
Shallow DOF is popular precisely because not all cameras can do it well	Erik Magnuson	6 months ago	2
John P. is an idiot...	Bob Meyer	6 months ago	2
Re: John P. is an idiot...	nrwhitman	6 months ago	2
Re: John P. is an idiot...	zxaar	6 months ago
Re: John P. is an idiot...	Detail Man	6 months ago
Bob's right , he is an idiot.	Mike Fewster	6 months ago	1
Re: Bob's right , he is an idiot.	zxaar	6 months ago
Re: Bob's right , he is an idiot.	Ulric	6 months ago
Re: Bob's right , he is an idiot.	Mike Fewster	6 months ago
Sorry zxaar, he's still wrong	Bob Meyer	6 months ago
wrong is wrong....	Bob Meyer	6 months ago
Re: OMG...tell me thiis guy is wrong about micro four thirds	YouDidntDidYou	6 months ago
Re: OMG...tell me thiis guy is wrong about micro four thirds	G Sciorio	6 months ago
Re: OMG...tell me thiis guy is wrong about micro four thirds	Detail Man	6 months ago
Re: OMG...tell me thiis guy is wrong about micro four thirds	G Sciorio	6 months ago
Re: OMG...tell me thiis guy is wrong about micro four thirds	zxaar	6 months ago
Re: OMG...tell me thiis guy is wrong about micro four thirds	G Sciorio	6 months ago
Re: OMG...tell me thiis guy is wrong about micro four thirds	jim stirling	6 months ago
Re: OMG...tell me thiis guy is wrong about micro four thirds	YouDidntDidYou	6 months ago
Some "inadequate" examples	Great Bustard	6 months ago
Re: Some "inadequate" examples	danijel973	6 months ago	1
Re: OMG...tell me thiis guy is wrong about micro four thirds	jim stirling	6 months ago
I stop reading when....	Guy Parsons	6 months ago	1
he's wrong in a few areas, but he has the 2.8->5.6 correct ...	Kim Letkeman	6 months ago
Re: Misleading	Landscapephoto99	6 months ago
Re: OMG...tell me thiis guy is wrong about micro four thirds	danijel973	6 months ago
Isnt there something wrong here?	djbrom	6 months ago
Re: Isnt there something wrong here?	danijel973	6 months ago
Re: Isnt there something wrong here?	danijel973	6 months ago
Re: Isnt there something wrong here?	Detail Man	6 months ago	1
Re: Isnt there something wrong here?	danijel973	6 months ago
Re: Isnt there something wrong here?	Detail Man	6 months ago
The guy has no clue + its clearly an ad	Tomx72	6 months ago
Re: Isnt there something wrong here?	sean000	6 months ago
Also applies to APS DSLRs	Andy Crowe	6 months ago
guy is not wrong about micro four thirds: but so what? hi DoF is a common characteristic of m43 !!	sdyue	6 months ago	1
Depends	nzmacro	6 months ago	1
Bokeh and Depth of Field are NOT the same thing!	Mike_PEAT	6 months ago
A rather narrow point of view...	TrapperJohn	6 months ago
Re: A rather narrow point of view...	Kim Letkeman	6 months ago
Re: A rather narrow point of view...	RobBobW	6 months ago
Re: A rather narrow point of view...	Kim Letkeman	6 months ago
Re: A rather narrow point of view...	Moti	6 months ago
Re: A rather narrow point of view...	Kim Letkeman	6 months ago
Re: A rather narrow point of view...	noirdesir	6 months ago	1
Re: A rather narrow point of view...	mferencz	6 months ago
Re: A rather narrow point of view...	noirdesir	6 months ago
Re: A rather narrow point of view...	mferencz	6 months ago
Re: A rather narrow point of view...	noirdesir	6 months ago
My comment got deleted	Vlad S	6 months ago
Re; OMG...tell me thiis guy is wrong about micro four thirds	captura	6 months ago
m4/3 does not mean no subject isolation ...	Kim Letkeman	6 months ago
Re: m4/3 does not mean no subject isolation ...	captura	6 months ago
Re: m4/3 does not mean no subject isolation ...	Kim Letkeman	6 months ago
Re: m4/3 does not mean no subject isolation ...	captura	6 months ago
The definition of "good Bokeh"	Mike Fewster	6 months ago
Re: The definition of "good Bokeh"	captura	6 months ago
Re: The definition of "good Bokeh"	Paco 316	6 months ago
Re: m4/3 does not mean no subject isolation ...	Kim Letkeman	6 months ago
Some Bokeh links.....	Guy Parsons	6 months ago	1
If you want to learn about photography...	Pixnat2	6 months ago
Re: OMG...tell me thiis guy is wrong about micro four thirds	LudwigVB	6 months ago
Distance to subject	Barry Fitzgerald	6 months ago
Re: Distance to subject	mferencz	6 months ago
Re: Distance to subject	sean000	6 months ago
Re: Distance to subject	Great Bustard	6 months ago
you'll find a lot of useful Real micro four thirds information	YouDidntDidYou	6 months ago
Re: OMG...tell me this guy is wrong about micro four thirds	Detail Man	6 months ago	1

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