Wish I knew
Dec 17, 2013 17:08:16 #
retlaw
Loc: Northern New Jersey
My D800 was set on Av 7.1, auto ISO on and set to max ISO = 2500 with a minimum speed of 1/1600. The bird flies by and luck has it that the sun is bright on him. The camera shoots the pic at f= 7.1, ISO = 1000 and speed = 1/8000. The picture is really good (for me) so I am happy.
Question: Why did the camera pick those settings to take the shot? Why not half the ISO and half the speed or some other combination??? Is there a chart that shows what the cameras program will use and does it change with different starting points (ISO sensitivity settings)?
Thanks in advance.
Question: Why did the camera pick those settings to take the shot? Why not half the ISO and half the speed or some other combination??? Is there a chart that shows what the cameras program will use and does it change with different starting points (ISO sensitivity settings)?
Thanks in advance.
Dec 17, 2013 18:18:21 #
retlaw wrote:
My D800 was set on Av 7.1, auto ISO on and set to ... (show quote)
Ah, grasshopper, that is the elusive mystery of semi-automatic! :lol: :lol:
Dec 18, 2013 07:19:09 #
I don't have an answer for you but I've noticed the same thing on both my T3i and my 6D. The camera always seems to want to shoot at higher ISOs.
My guess is that the camera is programmed to consider whatever high limit you set to be just as viable as ISO 100 and noise isn't in the equation.
Maybe there's someone out there that actually understands how the camera decides and will give us both a bit of enlightenment.
My guess is that the camera is programmed to consider whatever high limit you set to be just as viable as ISO 100 and noise isn't in the equation.
Maybe there's someone out there that actually understands how the camera decides and will give us both a bit of enlightenment.
Dec 18, 2013 07:20:14 #
From my experience shooting dragon flies on the wing I found that should I shoot on Aperture, ISO at 1000 or more, lens wide open (use the Nikon 70-300 f/4.5-5.6). As you experienced this gives a very fast shutter speed which stops the moving object.
Dec 18, 2013 16:12:35 #
retlaw
Loc: Northern New Jersey
larrywilk wrote:
Ah, grasshopper, that is the elusive mystery of semi-automatic! :lol: :lol:
Hi Larry,
You are right about losing some control in the semi-auto modes but I do like using the advanced technical features that these newer digital cameras offer it sometimes gives me more than I could do on my own. For example, I would never have set the shutter speed to 1/8000 and yet the camera did and the picture is really sharp.
Dec 18, 2013 16:21:21 #
retlaw
Loc: Northern New Jersey
Psergel wrote:
I don't have an answer for you but I've noticed the same thing on both my T3i and my 6D. The camera always seems to want to shoot at higher ISOs.
My guess is that the camera is programmed to consider whatever high limit you set to be just as viable as ISO 100 and noise isn't in the equation.
Maybe there's someone out there that actually understands how the camera decides and will give us both a bit of enlightenment.
My guess is that the camera is programmed to consider whatever high limit you set to be just as viable as ISO 100 and noise isn't in the equation.
Maybe there's someone out there that actually understands how the camera decides and will give us both a bit of enlightenment.
I think you are right about the cameras program in that it does not consider noise. In my case, 1/8000 is the maximum shutter speed so I am guessing that the camera simply used that and an ISO which yielded a proper exposure, which happened to be ISO 1000. If my max shutter speed was 1/4000, it would have needed ISO 2000 resulting in a picture with more noise.
[Nikon, give us your logic.] :-D
Dec 18, 2013 16:39:28 #
retlaw
Loc: Northern New Jersey
BboH wrote:
From my experience shooting dragon flies on the wing I found that should I shoot on Aperture, ISO at 1000 or more, lens wide open (use the Nikon 70-300 f/4.5-5.6). As you experienced this gives a very fast shutter speed which stops the moving object.
Hi Bob,
Yes, I really like the fact that we can now use higher ISOs and get higher shutter speeds. BTW, I noticed that you are in Maryland. That is where I shot the picture in question; at the Conowingo Dam great place for eagles.
Dec 18, 2013 16:54:20 #
retlaw wrote:
Hi Larry,
You are right about losing some control in the semi-auto modes but I do like using the advanced technical features that these newer digital cameras offer it sometimes gives me more than I could do on my own. For example, I would never have set the shutter speed to 1/8000 and yet the camera did and the picture is really sharp.
You are right about losing some control in the semi-auto modes but I do like using the advanced technical features that these newer digital cameras offer it sometimes gives me more than I could do on my own. For example, I would never have set the shutter speed to 1/8000 and yet the camera did and the picture is really sharp.
Was being half humorous. :lol: :lol: But anytime we go into one of these modes, we relinquish some control. I do it as well and at times it works great, but others it doesn't. Besides, I liked that program and have wanted the opportunity to say something like that for years!
Thanks, Larry
Dec 18, 2013 21:01:00 #
retlaw wrote:
Hi Bob,
Yes, I really like the fact that we can now use higher ISOs and get higher shutter speeds. BTW, I noticed that you are in Maryland. That is where I shot the picture in question; at the Conowingo Dam great place for eagles.
Yes, I really like the fact that we can now use higher ISOs and get higher shutter speeds. BTW, I noticed that you are in Maryland. That is where I shot the picture in question; at the Conowingo Dam great place for eagles.
Yea, especially since Constellation Energy built the shooting pier and walk ways along the river.
Dec 18, 2013 21:28:39 #
BboH wrote:
Yea, especially since Constellation Energy built the shooting pier and walk ways along the river.
Catonsville...was it the #8 streetcar that went there?
Dec 18, 2013 21:35:32 #
retlaw wrote:
My D800 was set on Av 7.1, auto ISO on and set to ... (show quote)
That's why you shoot manual. You always want to tell the camera what you want it to do, you don't want the camera telling you what it wants to do.
Give a camera enough of a chance and it will often screw you.
Dec 19, 2013 05:27:14 #
retlaw
Loc: Northern New Jersey
In response to:
Psergel wrote:
I don't have an answer for you but I've noticed the same thing on both my T3i and my 6D. The camera always seems to want to shoot at higher ISOs.
My guess is that the camera is programmed to consider whatever high limit you set to be just as viable as ISO 100 and noise isn't in the equation.
Maybe there's someone out there that actually understands how the camera decides and will give us both a bit of enlightenment.
I wrote:
I think you are right about the cameras program in that it does not consider noise. In my case, 1/8000 is the maximum shutter speed so I am guessing that the camera simply used that and an ISO which yielded a proper exposure, which happened to be ISO 1000. If my max shutter speed was 1/4000, it would have needed ISO 2000 resulting in a picture with more noise.
The last sentence is incorrect, it should be:
If my max shutter speed as 1/4000, it would have needed an ISO of 500 resulting in less noise. (This agrees with our supposition that the camera's program does not consider noise.) Sorry about that.
Psergel wrote:
I don't have an answer for you but I've noticed the same thing on both my T3i and my 6D. The camera always seems to want to shoot at higher ISOs.
My guess is that the camera is programmed to consider whatever high limit you set to be just as viable as ISO 100 and noise isn't in the equation.
Maybe there's someone out there that actually understands how the camera decides and will give us both a bit of enlightenment.
I wrote:
I think you are right about the cameras program in that it does not consider noise. In my case, 1/8000 is the maximum shutter speed so I am guessing that the camera simply used that and an ISO which yielded a proper exposure, which happened to be ISO 1000. If my max shutter speed was 1/4000, it would have needed ISO 2000 resulting in a picture with more noise.
The last sentence is incorrect, it should be:
If my max shutter speed as 1/4000, it would have needed an ISO of 500 resulting in less noise. (This agrees with our supposition that the camera's program does not consider noise.) Sorry about that.
Dec 19, 2013 07:19:45 #
larrywilk wrote:
Catonsville...was it the #8 streetcar that went there?
Yes - from Catonsville to Towson. That do go back away!
Dec 19, 2013 07:27:10 #
BboH wrote:
Yes - from Catonsville to Towson. That do go back away!
I lived on the other side in Overlea. Took the #15 to high school, Mervo Tech.
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