If I want to use f1.4 on a bright daylight, which ND filter should I use?
I usually shoot at f1.4 ISO 200.
If I plan to reduce the shutter speed to around 1/250s (in case I need to use flash), which ND filter is good to go?
Many thanks.
you can use high speed sync.
If I want to use f1.4 on a bright daylight, which ND filter should I use?
I usually shoot at f1.4 ISO 200.
If I plan to reduce the shutter speed to around 1/250s (in case I need to use flash), which ND filter is good to go?
Many thanks.
To bring down shutter speed to 1/250s, usually how many stops of ND am I looking at?
I saw this spec for B+W filters:
B+W ND110
B+W ND106
B+W ND103
does it mean 10, 6 and 3 stops respectively?
Well, do you understand what stops are?
If you do, then it really depends on the correct shutter speed for your setting of ISO200, F/1.4 right? That depends on the ambient lighting, no one can tell you what is the right answer!
If your shutter speed should be 1/500 seconds, then a 1 stop ND will do. If it should be 1/1000 seconds, then 2 stops will be needed. If it should be 1/2000 seconds, then 3 stops is required. I don't think you should need a 6 stop ND filter, that would mean ISO200, F/1.4, 1/16000 seconds is required.... And to my knowledge, max shutter speed should be 1/8000 seconds?
CPL will cut 1-2 stops IIRC. It will have other effects of course, such as reduction of non-metallic reflections and cutting of glare.I do understand the stops for shutter speed. Though not so much for aperture.
Shutter speed, simply divide or multiply right?
I think for now 3 stops ND should suit me fine, so long I can bring down the shutter speed to at least reach the max.
On a side note, how many stops will CPL cut?
Eh, why not just up the aperture from 1.4 to a 5.6 or 8? Isn't that easier to reduce shutter speed rather than an ND filter? Unless you die die want to shoot at 1.4 which at most times isn't the best option in bright daylight.
Thanks for all the replies. I think I know what I want now
One more question though, anyone can explain about the f stops for aperture?
For shutter speed, I can tell that 1/250s is 1 stop slower than 1/500s, but for aperture, is f2.8 1 stop slower than f1.4? Does divide and multiply work for aperture?
Thanks for all the replies. I think I know what I want now
One more question though, anyone can explain about the f stops for aperture?
For shutter speed, I can tell that 1/250s is 1 stop slower than 1/500s, but for aperture, is f2.8 1 stop slower than f1.4? Does divide and multiply work for aperture?
For aperture, it increases in root-2. Each root-2 increment is 1 stop. Here is how f/x goes (x is the aperture value): 1, 1.4, 2, 2.8, 4, 5.6, 8, 11, 16, 22, 32. So f/1.4 to f/2 is one stop, f/2 to f/2.8 is one stop, etc. The bigger the value (x), the smaller the aperture (that's why it is f/x, not fx), the less light will pass through. Note that for a given aperture, e.g. 2.8, f/2.8 is the correct notation, not f2.8.
How to remember that? There is an easy way. Just remember 1 & 1.4. The rest are just 2x multiple of the pair: (2, 2.8), (4, 5.6) etc.
Thanks for all the replies. I think I know what I want now
One more question though, anyone can explain about the f stops for aperture?
For shutter speed, I can tell that 1/250s is 1 stop slower than 1/500s, but for aperture, is f2.8 1 stop slower than f1.4? Does divide and multiply work for aperture?