try it and see, shoot at max focal lenght of your lens
one shot at 5m away and another shot at the minimum focusing distance
everything else constant
btw this shot below, 500mm at min focus distance at f8
Full body portrait with shallow DOF?
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try it and see, shoot at max focal lenght of your lens
one shot at 5m away and another shot at the minimum focusing distance
everything else constant
btw this shot below, 500mm at min focus distance at f8
DOF is not all that matters when you trying to get your subject isolated from the background.
A few more factors:
1. Distance between background and subject
2. Angle of view (or focal length) - telephoto have narrower angle and capture less of the background and tends to isolate the subject better.
3. Aperture used - this affects the DOF and the amount of out-of-focus blurring.
4. Lighting & composition
A few more factors:
1. Distance between background and subject
2. Angle of view (or focal length) - telephoto have narrower angle and capture less of the background and tends to isolate the subject better.
3. Aperture used - this affects the DOF and the amount of out-of-focus blurring.
4. Lighting & composition
uh. you do know how heavy and expensive those are right?
but yes.
c.f. http://photo.net/photo/nikon/300-2.8.html
Yes, I did used actual focal length in all calculations.
DOF is a perception issue and is it's related to Circle of Confusion (i.e. how much the actual image needs to be enlarged to a certain picture viewing size). The sensor size played a part in determining what the DOF is.
This has been extensively discussed recently in this forum.
In the earlier post, I used the actual focal length and only adjusted the subject distance in order to maintain the same composition. For e.g. To have about the same composition as 85mm on full frame standing 5m away, a 1.6x crop factor camera would need to stand about 5m away. To maintain the same composition with 85mm on a 1.6x crop factor camera would need to stand about 8m away.
You may want to verify the figures.
http://www.dofmaster.com/faq.html
If you use 200m, you would need to stand about 18m away in order to get a full body portrait (assuming you're using portrait framing on an APS sensor DSLR). If landscape framing, you would need to stand about 25m away). :sweatsm: If it's a portrait session, you would really need to shout very very loud to the subject for him/her to hear you.
Moreover, at F/2.8 (which is usual biggest aperture available), your DOF shooting at 200mm 18m away would be 0.86m on a 1.6x crop DSLR......more than double the 0.36m on 85mm F/1.8 standing at about 5m away on a full frame camera.
If yours is a much cheaper 70-200 with a smaller max. aperture, then the DOF would be even larger. For e.g. at F/4 200mm, the DOF would be 1.22m shooting at 18m away.
Also a 70-200mm F/2.8 is very much heavier than a 85mm F/1.8 and is tiring to carry for a long portrait session.
However, at 200mm, distances between foreground and background would be pullled to look much closer and there is a very much narrower field of view (compared to 85mm. This helps you to isolate the subject from the background). This sometimes give a nice looking bokeh if the lens is capable of good bokeh and the background is quite far away and not cluttered .
Because of the above, 200mm is usually used to cover some events instead of portrait session.
Ways to isolate the subject from the background :
http://forums.clubsnap.org/showthread.php?t=233598
Shot with a Sigma 70-200 f2.8 at 200mm f2.8.
I was really really far from them and the rail way track is stretches even furthur, as far as my eye can see. What I wanted to show with this picture is that if you want shallow DOF for full body length portraits, you'll want to use either a long long long lens, or have a background that stretches really really far away
Shot with a Sigma 70-200 f2.8 at 200mm f2.8.
I was really really far from them and the rail way track is stretches even furthur, as far as my eye can see. What I wanted to show with this picture is that if you want shallow DOF for full body length portraits, you'll want to use either a long long long lens, or have a background that stretches really really far away
You were probably about 25m away?
Sorry, I don't remember the exact distance. But 25 meters is a good guess. I didn't measure the distance, only remember walking furthur and furthur away from them trying to get a full body portrait... lol!
For 300mm, you would need to stand 25m-27m away in order to get a full body portrait, assuming you're using portrait frame. If you use landscape frame, you would need to stand nearly 35-m40m away. :sweatsm:
According to rough estimates, you would need to be about 25m away to get full body at 200mm on landscape framing.
Do you know the 2 of them?
I was thinking why don't you shoot them walking facing you so that we can see their facial expression. :sweatsm:
Happy and/or shy or sad and/or loving? :lovegrin:
But then, now it's all up to our imagination. May be it's a good thing. :sweatsm:
They are my friends. This was shot for a school project
The female doesn't like her photo taken and agreed to help me out only after much persistant begging / pleading / coaxing / cajoling :sweat:
On a full frame camera / 35mm film camera, I think it would be easier to get a shallower DOF.
That seems like soft focus rather than bokeh..?
For soft focus, the further the radial distance from a "selected center of focus" on the image, the blurer it is.
For bokeh, the object of interest will be in focus, regardless of which part of the image area it occupies (assuming the entire object is within the DOF), while the background is OOF.
I guess no PP can bring out the effect well unless the object is circular in nature?
For soft focus, the further the radial distance from a "selected center of focus" on the image, the blurer it is.
For bokeh, the object of interest will be in focus, regardless of which part of the image area it occupies (assuming the entire object is within the DOF), while the background is OOF.
I guess no PP can bring out the effect well unless the object is circular in nature?
Shot with a Sigma 70-200 f2.8 at 200mm f2.8.
I was really really far from them and the rail way track is stretches even furthur, as far as my eye can see. What I wanted to show with this picture is that if you want shallow DOF for full body length portraits, you'll want to use either a long long long lens, or have a background that stretches really really far away
OT a bit, where is this place? I'm searching for a railway track shot. TIA.
Can some gurus gives some pointer on how to achieve nice creamy BG for full body potriats. May need to use those technic this sunday..hee
post #34
choose location well
bg must be far away from subject
bg must also not be too busy otherwise not so creamy
No... What I meant was Bokeh is the Quality of the Out Of Focus areas in the picture, and not a matter of how blur is the Out Of Focus area in the picture. You can see this most easily when you shoot for example a portrait with trees behind and where the light streaming through the leaves forms highlights distinctive to the lens and its various aperture...
Here are some samples of nice bokeh that I like, hehe...
And here is a full body portrait...
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