Anyone knows what this device is?

[Mecko]

Hi guys,

I was wonder if any body can help me to know that this device is?
the name or anything about it.

I saw it many times and I wonder what it is?


[sorry for the bad editing]

I got this screenshot from this video:
youtu.be/qc-U3LA_MHo?t=4m31s to 4:30

Can anyone help me, Please?

 

[ronlane]

Looks like a light meter to me.

 

[runnah]

Looks like a pair of hands.

 

[cgipson1]

Light meter! Notice the similarities with this > Amazon.com: Sekonic L-308s Light Meter - Black: Camera & Photo

View attachment 57076

 

[amolitor]

To be precise, it is an incident light meter. He is measuring the light actually falling on the subject (hence the shielding hand behind it, to minimize leakage from the spots behind). This is opposed to a reflected light meter, which measures how much light is bouncing off the subject (and, presumably, into the lens of your camera). They need to be used somewhat differently.

 

[christop]

To be precise, it is an incident light meter. He is measuring the light actually falling on the subject (hence the shielding hand behind it, to minimize leakage from the spots behind). This is opposed to a reflected light meter, which measures how much light is bouncing off the subject (and, presumably, into the lens of your camera). They need to be used somewhat differently.

Correct me if I'm wrong (as I have no direct experience with incident light meters), but shouldn't he be facing the light meter toward the camera so that it "sees" the same light that falls on the subject? And those spots of light are still part of the incident light, so it makes no sense to hide that light from the meter.

He appears to be measuring the light being reflected off the subject (the little white spot on the meter is the integrating sphere, right?). Is he trying to use it as a reflected light meter?

 

[Josh66]

To be precise, it is an incident light meter. He is measuring the light actually falling on the subject (hence the shielding hand behind it, to minimize leakage from the spots behind). This is opposed to a reflected light meter, which measures how much light is bouncing off the subject (and, presumably, into the lens of your camera). They need to be used somewhat differently.

Correct me if I'm wrong (as I have no direct experience with incident light meters), but shouldn't he be facing the light meter toward the camera so that it "sees" the same light that falls on the subject? And those spots of light are still part of the incident light, so it makes no sense to hide that light from the meter.

He appears to be measuring the light being reflected off the subject (the little white spot on the meter is the integrating sphere, right?). Is he trying to use it as a reflected light meter?

I will often meter different areas, to see how much light will fall behind the subject, etc... Maybe that's what he's doing? Ensuring that the subject will be lit properly, and that the background will also be lit the way he wants it to be.

 

[Derrel]

I have not seen the whole video, but to me it appears that he is "shielding" the hemisphere from one light--the light that is highlighting the edge of his right hand, and is trying to establish the amount of light falling on the back of her head. He's trying to get a reading of the light that is falling on the back of her head, but as you can see by the hot light on the edge of his hand, there is another light raking in, and he's trying to prevent that "hotter" light's reading from being picked up by the hemisphere on the meter. So, no, he's not using the meter as a reflected light meter...he's doing a pretty normal operating procedure that many people do when using a hemispherical incident dome instead of a flat diffuser screen, which does not tend to pick up off-axis light to such a high degree.

 

[Newtricks]

Correct me if I'm wrong (as I have no direct experience with incident light meters), but shouldn't he be facing the light meter toward the camera so that it "sees" the same light that falls on the subject? And those spots of light are still part of the incident light, so it makes no sense to hide that light from the meter.

He appears to be measuring the light being reflected off the subject (the little white spot on the meter is the integrating sphere, right?). Is he trying to use it as a reflected light meter?

The meter is pointed towards the camera that took the picture, so he is reading the incidental light at the subject, wanting to measure the exposure based on the light falling directly on the subject without light from any other source is why the meter is being shielded from the back light. Where reflect light being metered, the meter would be pointed at the subject from the cameras point of view (a spot meter would be best in this situation), same way the meter in an SLR works.

 

[christop]

Correct me if I'm wrong (as I have no direct experience with incident light meters), but shouldn't he be facing the light meter toward the camera so that it "sees" the same light that falls on the subject? And those spots of light are still part of the incident light, so it makes no sense to hide that light from the meter.

He appears to be measuring the light being reflected off the subject (the little white spot on the meter is the integrating sphere, right?). Is he trying to use it as a reflected light meter?

The meter is pointed towards the camera that took the picture, so he is reading the incidental light at the subject, wanting to measure the exposure based on the light falling directly on the subject without light from any other source is why the meter is being shielded from the back light. Where reflect light being metered, the meter would be pointed at the subject from the cameras point of view (a spot meter would be best in this situation), same way the meter in an SLR works.

Ah, I was wrong. For some reason I thought he was holding the meter in front of and toward her, but he's actually holding it behind and away from her. I need to get my eyes checked.

 

[Newtricks]

I need to get my eyes checked.

I have to magnify everything to see it clearly.