F4 lens too slow for the full moon tonight?
Nov 15, 2016 18:49:05 #
Yes, use ISO 100, and you'll just have to experiment with your shutter speeds to get the shot you want. Also use a tripod!!
Nov 15, 2016 19:14:04 #
Remember slow and fast refers to the speed at which a lens focuses. The wider the fixed aperture, the more light it can draw in when focusing. Remember, when focusing, the lens will open to its widest aperture and then close down to the selected aperture to take the photo. With a pretty much motionless object like the moon, a fast focus would not be necessary.
Nov 15, 2016 19:41:49 #
SteveR wrote:
Remember slow and fast refers to the speed at which a lens focuses. The wider the fixed aperture, the more light it can draw in when focusing. Remember, when focusing, the lens will open to its widest aperture and then close down to the selected aperture to take the photo. With a pretty much motionless object like the moon, a fast focus would not be necessary.
Fast lens usually refers to the max aperture, and not necessarily how fast it focuses. Focus speed has to do with the lens and it's focus mechanism, and the camera's AF technology. A fast lens is one that typically has a max aperture of larger than F4 on a tele, and faster than F2 or F2.8 on a wide to short tele.
Nov 15, 2016 19:43:55 #
cfbudd wrote:
That's a stunning photo!
Thanks!
Nov 15, 2016 19:46:44 #
Wayne P wrote:
You need to use spot metering so you are not metering the dark sky.
No spot metering will help unless you specify what you need to do with the meter reading to get the right exposure. Better to use recommended exposure settings and make adjustments based on a couple of test shots. There are too many variables to take into account to make anything other than trial and error valid and reliable.
Nov 15, 2016 19:52:10 #
Just shot this handheld using a Nikon1 J1 camera and a Nikkor 55-300mm AFS VR zoomed to 300mm, with the Nikon FT-1 autofocus N1 to F mount adapter. The Nikon 1 J1 2.7 crop factor raises the equivalent focal length to 810mm. Settings were iso-100 f5.6, 1/500 sec. Click on the download button, then the + magnifier to see it at 100% resolution. This is the jpg right out of the camera, no cropping or post processing.
Nov 15, 2016 23:14:15 #
dickwilber
Loc: Indiana (currently)
WoodnMetalGuy wrote:
And I just found out there is a corresponding 'looney 11' rule for moon photos. Same as 'sunny 16' for daylight photos, but uses F11 vs. F16. So, aperture f/11, ISO 200, shutter 1/200, for example. So that might be a better start for you. -- Dave
The correct exposure is a sunny 16. However, the moon is a grey rock and that's what a sunny 16 exposure gives you. Because we are accustomed to see the moon against a very dark background, the gray rock appears underexposed, so we increase the exposure one stop (looney 11) and it appears normal to us.
Nov 16, 2016 00:01:18 #
Gene51 wrote:
Fast lens usually refers to the max aperture, and not necessarily how fast it focuses. Focus speed has to do with the lens and it's focus mechanism, and the camera's AF technology. A fast lens is one that typically has a max aperture of larger than F4 on a tele, and faster than F2 or F2.8 on a wide to short tele.
And yet, Gene, lenses with aperture's larger that f4 will focus faster than those narrower than f2.8. I would probably agree with you that it would be fast in two ways....it would focus faster and also could be considered faster because it could pull in more light when opened to the maximum apertures. However, lenses such as f4's can be used on stationary objects by compensating with shutter speed.
Nov 16, 2016 02:22:16 #
carl hervol
Loc: jacksonville florida
````````````````````````````````````````I used a 500mm f8 mirror with a 1.4 extender and did just fine on a dx camera d300. 
Nov 16, 2016 06:05:20 #
carl hervol wrote:
````````````````````````````````````````I used a 500mm f8 mirror with a 1.4 extender and did just fine on a dx camera d300.
Nov 16, 2016 19:14:00 #
carl hervol wrote:
````````````````````````````````````````I used a 500mm f8 mirror with a 1.4 extender and did just fine on a dx camera d300.
All things considered....wouldn't telescopes that peer into the furthest regions of the universe essentially be considered slow lenses since the exposure times are very long?
Nov 16, 2016 19:15:09 #
SteveR wrote:
All things considered....wouldn't telescopes that peer into the furthest regions of the universe essentially be considered slow lenses since the exposure times are very long?
Nah, can't be.
Nov 16, 2016 20:07:13 #
Annie B wrote:
I tried taking some full moon pics last night as a trial run with my 16-70 f/4 lens. I could not get a good picture no matter what settings I tried... Is the f4 lens too slow to take these kind of pictures?
Annie,
I shot the moon this morning - 1/200, F8, ISO 100. No your lens is not too slow. I did use a D800 and a Sigma Sport 150-600 F5 - 6.3 however.
Nov 16, 2016 20:34:49 #
dickwilber
Loc: Indiana (currently)
Gene51 wrote:
Annie,
I shot the moon this morning - 1/200, F8, ISO 100. No your lens is not too slow. I did use a D800 and a Sigma Sport 150-600 F5 - 6.3 however.
I shot the moon this morning - 1/200, F8, ISO 100. No your lens is not too slow. I did use a D800 and a Sigma Sport 150-600 F5 - 6.3 however.
Yes, a Looney 11 exposure!
Nov 16, 2016 20:38:33 #
Gene51 wrote:
Annie,
I shot the moon this morning - 1/200, F8, ISO 100. No your lens is not too slow. I did use a D800 and a Sigma Sport 150-600 F5 - 6.3 however.
I shot the moon this morning - 1/200, F8, ISO 100. No your lens is not too slow. I did use a D800 and a Sigma Sport 150-600 F5 - 6.3 however.
Great shot. Kinda looks like a decaying orange, doesn't it?
If you want to reply, then register here. Registration is free and your account is created instantly, so you can post right away.