LONG EXPOSURES

DizMatt said:
Lol. I think of this as buckets plural.
Each bucket is a pixel at iso100. The more sensitive iso is more shallow buckets but they are wider.
So high iso buckets, they fill up more quickly but are less accurate so more noise.
Not perfect but it helps me out chatting to people

Sent from my Nexus 7 using Talk Photography Forums mobile app
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Shallower and wider makes them equal again as it goes, its just smaller. :thumbs:
So high iso smaller buckets fill up more quickly and are less accurate ...

Paint as the light fluid is better than water also I find. ...open the tap up and the paint will splatter rather than pour closed down.
 
donut said:
i realise the intention was to expose the battery ,but if the paper was exposed properly ,then the battery would have been as well .i also understand the point he was trying to make about fooling meters ,
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You're totally missing the point. You get precisely what point I'm making re: meters being fooled so I've no idea why you're saying this.. other than being an arse. I'm not sure that saying "the paper has been incorrectly exposed" would have helped a beginner in any way. Besides, for the purpose of the article, the paper WAS exposed properly, in as much as that's what reflective meters do - render things as 18% grey (actually 16... but we'll not get into that). This is the purpose of the chapter you refer to. It is not a tutorial on how to correctly expose pieces of paper, but to illustrate the limitations of reflective light meters by explaining how they behave.


StewartR said:
No no no no no!

The intention was to show what happens if you rely on the camera's meter to determine the exposure for you.
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Exactly.
donut said:
the part i disagreed with was where he stated that

" it's the battery that's been wrongly exposed, not the paper."

i said that the paper was wrongly exposed ,and with it the battery ,( that just happened to be there )
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LOL... this is aimed at beginners. It simulates the situations beginners find themselves in: Shooting into a bright background and getting under exposed subjects. Why confound them by saying "As you can see the background is not correctly exposed". It wasn't their intention to correctly expose the background. Such language would confuse a rank beginner. Again, the intention of the article is to demonstrate how meters do not do what you want... so the language reflects that. I wrote it for beginners, not experienced but pedantic people :) You're reading it as an experienced photographer, not as a beginner. I'm sure you already know you're stuff.... except how to teach photography it would seem, :)
 
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no one has mentioned triangles :lol: iso, aperture. shutter speed. hth mike
 
it quite clearly says "it's the battery that's been wrongly exposed, not the paper" so according to you ,a piece of black paper that looks grey is correctly exposed ,,,,good teaching
 

StewartR said: ↑
No no no no no!
The intention was to show what happens if you rely on the camera's meter to determine the exposure for you.
Exactly.

The intention was to photograph the battery, not the background, so the battery is incorrectly exposed because the meter has been influenced by the large area occupied by the background. Just as in the shot with the window... the intention was to photograph the hand not the window.. so the meter has incorrectly exposed the hand due to being influenced by the majority bright background....

:)

make your mind up ,,,,,
 
j crossley said:
But if you use paint wont everything have a colour cast :thinking:
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Yes. That's why you have to choose buckets with the complementary colour. The 2 colours then combine to make grey.
The paint colour is the colour of the light and the bucket colour is the White Balance adjustment. Simples :)
 
donut said:

StewartR said: ↑
No no no no no!
The intention was to show what happens if you rely on the camera's meter to determine the exposure for you.
Exactly.

The intention was to photograph the battery, not the background, so the battery is incorrectly exposed because the meter has been influenced by the large area occupied by the background. Just as in the shot with the window... the intention was to photograph the hand not the window.. so the meter has incorrectly exposed the hand due to being influenced by the majority bright background....

:)

make your mind up ,,,,,
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I've got no idea what you're talking abut now. I think you need to get out more though :)
 
in post #22 you said

"The intention was to photograph the battery, not the background"

after i had said "i realise the intention was to expose the battery"

StewartR then said
"No no no no no!
The intention was to show what happens if you rely on the camera's meter to determine the exposure for you."

and then in post #43 you agreed with the above .

i was only asking was it the intention to photograph the battery or the black card ?
it dosent really matter either way though ,because the statement you made that the black paper is correctly exposed is still wrong .
 
donut said:
idosent really matter either way though ,because the statement you made that the black paper is correctly exposed is still wrong .
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No it's not. The paper in both shots is both correct, AND wrong, but why confuse a beginner? It's correct because the meter has performed it's task admirably: rendering a scene with pretty much one tone as 18% grey. Well done meter. It's wrong because that was clearly not the intention, so the exposure (as intended) is incorrect.. but that is user error.


If a beginner tries to photograph a dark object against a light background, they will NOT think to themselves, "Oh.. the background is correctly/incorrectly exposed", they will think "Oh.. the thing I wanted to shoot is light/dark". You know very well what the point of the article was, and the fact that you, clearly experienced, is being a pedant about it is because you suffer from the perennial amateur photographer's forum disease known as "Imustproveiknowmorethanhim - itus"



Stop obsessing... really. It's just a tutorial to demonstrate how reflective light meters can give you unpredictable results. I'm not sure if you are genuinely confused by something very simple, or not. Either way... there's one thing I know for a fact that you have no understanding of: How bored this conversation is making me.

Adiós
 
Pookeyhead said:
The paper in both shots is both correct, AND wrong, but why confuse a beginner? It's correct because the meter has performed it's task admirably: rendering a scene with pretty much one tone as 18% grey. Well done meter. It's wrong because that was clearly not the intention, so the exposure (as intended) is incorrect.. but that is user error. Adiós
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you're funny ,you should do stand up ..which is what i've been saying

typical teacher ,can never admit to being wrong . i wont be looking for the next lot of weasle words because you're bored and out of here ,,,,,goodbye.
 
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