bigtex2000 wrote:
Last night, I shot some photos of the wife hula hooping with her Fire Hoop. Settings are as follows; f5.0, ISO 100, 0"8 shutter speed, tripod, shooting in manual mode. Canon T3i w/ Tamron 18-270 lens. It was very difficult getting an in-focus facial picture. I kept telling her, "very still", but hard to "freeze" for long. Any suggestions would be greatly appreciated. Thanks for taking the time to help!!
I have not tried this but I certainly have seen a lot of videos. Just have not had the opportunity to do it. Look up videos on Rear Curtain Sync. I believe you are in the area for this technique.
This Would Make A Great Virtual Background
Bobbee wrote:
I have not tried this but I certainly have seen a lot of videos. Just have not had the opportunity to do it. Look up videos on Rear Curtain Sync. I believe you are in the area for this technique.
Thank you Bobbee.....I have looked at that, and I think that might be my solution.
Jim Peters wrote:
This Would Make A Great Virtual Background
Thanks Jim.......I appreciate the comment sir.
rpavich wrote:
That's cool.
At this point though I'm not sure what you are trying to accomplish...to keep the face sharp or to keep the face sharp while the rest gets smeared.
In any case...here is why I was pointing out that the equiv exposure would keep the background dark.
I shot my coffee cup lit by my laptop monitor with your 8 second exposure and also by a 1/8 exposure. Aperture was the same, ISO went from 100 to 3200.
Both exposed (relatively) the same (I eyeballed the second one)
background dark on both.
That's cool. br br At this point though I'm not s... (
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Actually, I really am trying to get a clear face while the motion blur of the the fire remains.
rpavich...thank you for the illustration of the 2 photos. I will certainly give yours and the other suggestions a try. I really appreciate the time and efforts put forth by all contributors, as it means a great deal to me that people will help out when needed or asked. Thanks again sir.
bigtex2000 wrote:
Actually, I really am trying to get a clear face while the motion blur of the the fire remains.
rpavich...thank you for the illustration of the 2 photos. I will certainly give yours and the other suggestions a try. I really appreciate the time and efforts put forth by all contributors, as it means a great deal to me that people will help out when needed or asked. Thanks again sir.
Ok...that clears a lot of it up.
You may or may not get there because the amount of shutter speed needed to blur the fire may not yield a sharp face. Humans can stand still for 1/4 or 1/8 or so...even possibly a second.
You should do this; light some fire and figure out how long a shutter speed is necessary to blur the fire. If it's reasonable that a person could hold a pose at that speed, then you are good to go...if it's not (say 10 seconds or something) then you need to think about compositing two images together.
Using a flash will freeze the human face but also the fire unless you can use something to "block" the flash from hitting the fire.
rpavich wrote:
Ok...that clears a lot of it up.
You may or may not get there because the amount of shutter speed needed to blur the fire may not yield a sharp face. Humans can stand still for 1/4 or 1/8 or so...even possibly a second.
You should do this; light some fire and figure out how long a shutter speed is necessary to blur the fire. If it's reasonable that a person could hold a pose at that speed, then you are good to go...if it's not (say 10 seconds or something) then you need to think about compositing two images together.
Using a flash will freeze the human face but also the fire unless you can use something to "block" the flash from hitting the fire.
Ok...that clears a lot of it up. br br You may or... (
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Excellent advise........thank you very much....looks like I have my work cut out for me on this one.....hope to post next results soon.
[quote=bigtex2000]This was shot at ISO 100. By going to 800 you can take in 8 times as much light. The f stop could be f-11 or better speed up the shutter. David
Thanks for the settings Meives, I appreciate the help.
Rear curtain sync. 4 seconds @ f8.0, iso 100. First I determined how much flash I needed to expose for my son. The shutter speed is only for the sparkler, background was of no concern. Is this something like what you are trying to accomplish?
F5.0 might be tricky to get all in focus, I went with at least 8. Determine focus first, take AF and put in manual. That should keep your subject in focus. So long as neither of you move, should be (or close to) enough DOF.
I should add that if you are trying to do this without a flash, I'm not sure you could accomplish an in focus picture without it. Wish I had a better solution, but I'm not sure a human could stay still long enough to illuminate them with only the fire light to get a good exposure and still stay sharp.
I think you are on the right track, and when you get the result you are after it will look pretty cool.
grandmadeb wrote:
love the second picture. the light trail is wonderful. I hope you figure out your problem as it will look very cool once you do. deb
Yep, I agree. Wonderful is a great description of that shot.
skidooman wrote:
Rear curtain sync. 4 seconds @ f8.0, iso 100. First I determined how much flash I needed to expose for my son. The shutter speed is only for the sparkler, background was of no concern. Is this something like what you are trying to accomplish?
F5.0 might be tricky to get all in focus, I went with at least 8. Determine focus first, take AF and put in manual. That should keep your subject in focus. So long as neither of you move, should be (or close to) enough DOF.
I should add that if you are trying to do this without a flash, I'm not sure you could accomplish an in focus picture without it. Wish I had a better solution, but I'm not sure a human could stay still long enough to illuminate them with only the fire light to get a good exposure and still stay sharp.
I think you are on the right track, and when you get the result you are after it will look pretty cool.
Rear curtain sync. 4 seconds @ f8.0, iso 100. Firs... (
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Very good point and good illustration...
rpavich wrote:
Very good point and good illustration...
:thumbup: :thumbup: :thumbup:
That is exactly what I am looking for......Thank you very much skidooman.....I think this will be my first settings and then go from there. UHH comes thru once again.
skidooman wrote:
Yep, I agree. Wonderful is a great description of that shot.
Thank you skidooman...I aprreciate the comments.
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