"Dave Moorman" wrote in message
]...
In article
,
Grumpy AuContraire wrote:


The F16 rule is ASA speed equal shutter speed @ F16 in bright daylight.
Experience dictates variables from that point. Cloud cuts off the sun,
drop to F8 etc.

Is the other part of that rule of thumb that you set the exposure time
for 1/the lens length? I.e., if you're using a 75mm lens, set the
exposure time 1/75 (or as close as you can get).
Sorry I never heard that one-the focal length by itself has nothing to do
with exposure, only the lens aperature. F16 on any lens passes the same
amount of light.
jim

"Grumpy AuContraire" wrote:

The F16 rule is ASA speed equal shutter speed @ F16 in bright daylight.
Experience dictates variables from that point. Cloud cuts off the sun,
drop to F8 etc.


Ok. I just used the guide sheet that came with the film when a meter
wasn't working.

When I was shooting a lot, I carried an old Sekonic incident meter that
I used a lot when shooting

I can't remember the first meter I used. The second was a Pentax that I
got when I got the Spotmatic.

Crazy Ed

" "Dave Moorman" wrote in message
]...
Is the other part of that rule of thumb that you set the exposure time
for 1/the lens length? I.e., if you're using a 75mm lens, set the
exposure time 1/75 (or as close as you can get).


While not affecting actual exposure, this is a good rule to follow to avoid
camera shake with telephoto lenses-use the focal length as your slowest
shutter speed.
jim

jim wilson wrote:
"Dave Moorman" wrote in message
]...

In article
,
Grumpy AuContraire wrote:


The F16 rule is ASA speed equal shutter speed @ F16 in bright daylight.
Experience dictates variables from that point. Cloud cuts off the sun,
drop to F8 etc.

Is the other part of that rule of thumb that you set the exposure time
for 1/the lens length? I.e., if you're using a 75mm lens, set the
exposure time 1/75 (or as close as you can get).

Sorry I never heard that one-the focal length by itself has nothing to do
with exposure, only the lens aperature. F16 on any lens passes the same
amount of light.
jim



I don't know why any adjustment would have to be made for any focal
length lens with aperture markings would require compensation.

JT

Edward Erbeck wrote:

"Grumpy AuContraire" wrote:


The F16 rule is ASA speed equal shutter speed @ F16 in bright daylight.
Experience dictates variables from that point. Cloud cuts off the sun,
drop to F8 etc.



Ok. I just used the guide sheet that came with the film when a meter
wasn't working.


And there is nothin' wrong with that. That's how most exposures were
made before the advent of light meters.

Of course, someone these days might complain that it's discrimatory or
sumptin' like that and higher a hoidy toidy trail lawyer to empty out
Kodak's coffers...

G



When I was shooting a lot, I carried an old Sekonic incident meter that
I used a lot when shooting


I can't remember the first meter I used. The second was a Pentax that I
got when I got the Spotmatic.

Crazy Ed



I still have my original Leica meter and a Gossen Pilot. Not sure if
either work anymore...

Not sure if I work anymore as well..

G

JT

"Grumpy AuContraire" wrote:

Of course, someone these days might complain that it's discrimatory or
sumptin' like that and higher a hoidy toidy trail lawyer to empty out
Kodak's coffers...

G


The only Politically Correct thing I do anymore is Vote! ;-)


Crazy Ed

In article MY1Mi.31054$x%6.30938@pd7urf2no,
"jim wilson" wrote:

"Dave Moorman" wrote in message
]...
In article
,
Grumpy AuContraire wrote:


The F16 rule is ASA speed equal shutter speed @ F16 in bright daylight.
Experience dictates variables from that point. Cloud cuts off the sun,
drop to F8 etc.

Is the other part of that rule of thumb that you set the exposure time
for 1/the lens length? I.e., if you're using a 75mm lens, set the
exposure time 1/75 (or as close as you can get).
Sorry I never heard that one-the focal length by itself has nothing to do
with exposure, only the lens aperature. F16 on any lens passes the same
amount of light.
jim

Yes, but no. F/16 with the shutter open for 1/50th of a second passes
five times the light of F/16 with shutter open for 1/250th of a second.


If you're going to avoid over- or under-exposure, you have to set both
the aperture and the exposure time to the right settings.

Dave

In article na8Mi.32329$x%6.8387@pd7urf2no,
"jim wilson" wrote:

" "Dave Moorman" wrote in message
]...
Is the other part of that rule of thumb that you set the exposure time
for 1/the lens length? I.e., if you're using a 75mm lens, set the
exposure time 1/75 (or as close as you can get).


While not affecting actual exposure, this is a good rule to follow to avoid
camera shake with telephoto lenses-use the focal length as your slowest
shutter speed.
jim

True.

In article ,
Edward Erbeck wrote:

The only Politically Correct thing I do anymore is Vote! ;-)


Crazy Ed

And according to about half of the people, you'd be doing that
incorrectly! :-)

"Dave Moorman" wrote in message
]...
In article MY1Mi.31054$x%6.30938@pd7urf2no,
"jim wilson" wrote:

"Dave Moorman" wrote in message
]...
In article
,
Grumpy AuContraire wrote:


The F16 rule is ASA speed equal shutter speed @ F16 in bright
daylight.
Experience dictates variables from that point. Cloud cuts off the sun,
drop to F8 etc.

Is the other part of that rule of thumb that you set the exposure time
for 1/the lens length? I.e., if you're using a 75mm lens, set the
exposure time 1/75 (or as close as you can get).
Sorry I never heard that one-the focal length by itself has nothing to do
with exposure, only the lens aperature. F16 on any lens passes the same
amount of light.
jim

Yes, but no. F/16 with the shutter open for 1/50th of a second passes
five times the light of F/16 with shutter open for 1/250th of a second.
If you're going to avoid over- or under-exposure, you have to set both
the aperture and the exposure time to the right settings.

Dave
True, of course. I spoke only of the amount of light passed by the lens
aperature without reference to how long that light is allowed to hit the
film or sensor. Both settings, as you say, make up "exposure". If the
correct exposure for a photo is 1/125 at F16, it doesn't matter whether the
lens is 50 mm or 1000 mm, set both to F16 and the exposure is correct-but
don't hand hold the 1000 mm lens at that slow a speed. 8)
jim