Originally posted by Class A But clearly the amount of light is not constant in the 1/800 vs 1/50 shutter speed scenarios?
I think you didn't understand what edl was trying to say. And I agree, he didn't say what he meant. So, sorry that I did the necessary translation before answering.
The translation was this: Of course, 1/50s shutter speed isn't the same light, but it showed that the light
flux wasn't low.
Light flux does have an impact because it allows for a shorter exposure time. And a shorter exposure time minimizes the effect of noise caused by the dark current. However, as I explained, not below 1/180s and as I explained, not for moderate exposure times with modern sensors which haven't a large dark current anymore. Dark current increases when the sensor gets hot though. Which is why it does matter for very long exposures or in movie mode.
Again, all this was just to say: Never mind, that's a normal ISO 6400 shot.
Originally posted by philippe A few little questions for Falk while you are over there, if you do no't mind :
- How large is one RAW file, Mb wise?
- Can the K-5 shoot seqwenses whit out lowering the mirror in between, like the mirror up and then a series of several exposures (interesting for handheld exposure blending)?
- Does the K-5 can be tethered with the EYE-FI cards to a computer, or by other means (remote assistant)?
First qustion was answered before. The other two questions are easily answered because there is no diference to a K-7: Yes and yes. Eyefi works and switching to LV makes the camera burst or bracket w/o mirror operation (called quiet shutter with the D7000). Remote assistant doesn't support the K-7 or K-5 but it seems like Pentax said they're working on it.