Continous lighting for product shots
Posted 14/06/2009 - 23:35
Link
Keywords: Charming, polite, and generally agreeable.
Posted 15/06/2009 - 08:37
Link
and totally uncontrollable
Ken
“We must avoid however, snapping away, shooting quickly and without thought, overloading ourselves with unnecessary images that clutter our memory and diminish the clarity of the whole.” - Henri Cartier-Bresson -
“We must avoid however, snapping away, shooting quickly and without thought, overloading ourselves with unnecessary images that clutter our memory and diminish the clarity of the whole.” - Henri Cartier-Bresson -
Posted 15/06/2009 - 08:44
Link
Quote:
and totally uncontrollable
In what way would you find them totally uncontrollable? Surely a continuous light source (the sun is one as well) would be the most easy to control of all?
and totally uncontrollable
Best regards, John
Posted 15/06/2009 - 09:34
Link
Totally uncontollable in the sense that this is just a flood with no means of controlling spill. There is no mention if the tubes are continuous spectrum and at the price I doubt if they are. Dont we try to control the sun with scrims, diffusers, reflectors and so on?
Ken
Ken
Ken
“We must avoid however, snapping away, shooting quickly and without thought, overloading ourselves with unnecessary images that clutter our memory and diminish the clarity of the whole.” - Henri Cartier-Bresson -
“We must avoid however, snapping away, shooting quickly and without thought, overloading ourselves with unnecessary images that clutter our memory and diminish the clarity of the whole.” - Henri Cartier-Bresson -
Posted 15/06/2009 - 09:44
Link
Here is the rub:
"The 70cm x 50cm softbox produces the equivalent of over 700 watts of tungsten lighting. This means that there is enough light, at a distance of 1 metre and with 800 ISO, to give a typical full power exposure of 1/30th second at f/13 (or 1/400th at f/4), and a typical minimum power exposure of 1/30th second at f/4."
Note, 800ISO and the lamp is only 1 metre from the subject matter. For product photography you would want the lowest ISO available so we would now have an exposure of 1/30 at f4 and not much DOF. Start moving the lamp to a more realistic distance to the subject and you'll be struggling to get anything at all out of it. This is a very low output lamp.
If you want cold continuous lighting with accurate colour balance there is only one choice IMO link
Ken
"The 70cm x 50cm softbox produces the equivalent of over 700 watts of tungsten lighting. This means that there is enough light, at a distance of 1 metre and with 800 ISO, to give a typical full power exposure of 1/30th second at f/13 (or 1/400th at f/4), and a typical minimum power exposure of 1/30th second at f/4."
Note, 800ISO and the lamp is only 1 metre from the subject matter. For product photography you would want the lowest ISO available so we would now have an exposure of 1/30 at f4 and not much DOF. Start moving the lamp to a more realistic distance to the subject and you'll be struggling to get anything at all out of it. This is a very low output lamp.
If you want cold continuous lighting with accurate colour balance there is only one choice IMO link
Ken
Ken
“We must avoid however, snapping away, shooting quickly and without thought, overloading ourselves with unnecessary images that clutter our memory and diminish the clarity of the whole.” - Henri Cartier-Bresson -
“We must avoid however, snapping away, shooting quickly and without thought, overloading ourselves with unnecessary images that clutter our memory and diminish the clarity of the whole.” - Henri Cartier-Bresson -
Add Comment
To leave a comment - Log in to Pentax User or create a new account.


7677 posts
18 years
Hertfordshire,
mostly.
It is an illusion that photos are made with the camera… they are made with the eye, heart and head. Henri Cartier-Bresson
Lots of film bodies, a couple of digital ones, too many lenses (mainly older glass) and a Horseman LE 5x4.