il_mix
TPF Noob!
- Joined
- Feb 20, 2014
- Messages
- 14
- Reaction score
- 4
- Location
- Italy
- Can others edit my Photos
- Photos NOT OK to edit
Hi everyone!
I have a question that bugs me since long.
Internal ligh meters get the light that goes through the lens and filter (if any), and convert the information giving exposure/aperture pair hints.
External light meters get the light directly from the target, and again convert this information.
The question is: isn't it more reliable to get the information from an internal light meter, since we are measuring the "real" light, filtered by the lens and filters, that is going to the sensor/film?
As a simple example, is said that zoom lenses are "darker" than fixed ones ("fixed" isn't probably the right word, I'm sorry. Say a 35mm lens). So an external light meter gives me a hint about the exposure/aperture pair just from the target light, without knowing anything about lens/filters used. An internal one will measure less light if I'm using a zoom lens, or if a filter is used, and gives me exposure/aperture hints for that light.
With these assumption, an internal light meter seems better than an external one.
But since there are 500$ external light meters, maybe I'm missing something...
I have a question that bugs me since long.
Internal ligh meters get the light that goes through the lens and filter (if any), and convert the information giving exposure/aperture pair hints.
External light meters get the light directly from the target, and again convert this information.
The question is: isn't it more reliable to get the information from an internal light meter, since we are measuring the "real" light, filtered by the lens and filters, that is going to the sensor/film?
As a simple example, is said that zoom lenses are "darker" than fixed ones ("fixed" isn't probably the right word, I'm sorry. Say a 35mm lens). So an external light meter gives me a hint about the exposure/aperture pair just from the target light, without knowing anything about lens/filters used. An internal one will measure less light if I'm using a zoom lens, or if a filter is used, and gives me exposure/aperture hints for that light.
With these assumption, an internal light meter seems better than an external one.
But since there are 500$ external light meters, maybe I'm missing something...