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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 21 Aug 2014 (Thursday) 11:03
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Background is not blurred enough

 
h14nha
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Aug 21, 2014 17:58 |  #16

Hi,

Pay attention to your surroundings when shooting. It looks like a staged shot, not a random picture so when 'setting' you studio/shooting environment. look for a clutter free area. If you just moved to your right so the lamp wasn't between them, you would have had a nice neutral colour from the wall as your backdrop. Blurring the backdrop would have mattered less, a gentle blur would have diffused the wall into a light creamy colour great for subject separation.


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Reservoir ­ Dog
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Aug 22, 2014 00:59 |  #17

windpig wrote in post #17109654 (external link)
did you go down and look at the comparison on the link? It shows the difference BETWEEN DIFFERENT FOCAL LENGTHS at the same aperture.

Yep, but the problem is we are not speaking about the same aperture ;)
The 100 f/2.8 cannot open at f/1.4 ... a difference of 2 stops aperture for only a difference of 15mm focal length , the 100mm f/2.8 will never have the blur of the f/1.4 with the 85mm and this is even more true on the near background (for the same framing) ;)

But, the 200mm @f/2.8 will have the far background (50 to 100 meters) with more blur than the 85mm @f/1.4 in this case due to the longer focal length ;)


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notastockpikr
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Aug 22, 2014 07:11 |  #18

CyberDyneSystems wrote in post #17109586 (external link)
You---------------Subject---------------background

that would work better. :)

Exactly or....shoot in RAW and make the background OOF in PS. :D




  
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Aug 22, 2014 07:36 |  #19

This is what you need - http://www.mpbphotogra​phic.co.uk/canon-ef-1200mm-f56-l-usm-1 (external link)


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Aug 22, 2014 07:45 |  #20

Reservoir Dog wrote in post #17110737 (external link)
Yep, but the problem is we are not speaking about the same aperture ;)
The 100 f/2.8 cannot open at f/1.4

What you're not understanding is that a) he wasn't specifically recommending the lens in the linked review and b) he wasn't engaging in an epeen measuring contest against you. He was simply linking to it for the example, as stated, 2/3 of the way down, comparing differing focal lengths at the same aperture and the effect that it has on bg blur.


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Reservoir ­ Dog
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Aug 22, 2014 08:22 |  #21

WhyFi wrote in post #17111067 (external link)
What you're not understanding is that a) he wasn't specifically recommending the lens in the linked review and b) he wasn't engaging in an epeen measuring contest against you. He was simply linking to it for the example, as stated, 2/3 of the way down, comparing differing focal lengths at the same aperture and the effect that it has on bg blur.

Hum ... i red back all, and effectively, it seems i wasn't on the same wave, my bad :o
windpig i'm sorry


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watt100
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Aug 22, 2014 09:13 |  #22

snake0ape wrote in post #17109594 (external link)
Practice with the 50mm at f1.8. Shoot subject with far background and near background and in between. Shoot subject at closer distance with far background and near background and in between. Find the right mix that will make you happy. Your lens should do the job you want. If not good enough, try the 85 f1.8.


right, like others have said you have to get closer to your subject and the background further away for more 'blur'

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Aug 22, 2014 13:11 |  #23

Reservoir Dog wrote in post #17111132 (external link)
Hum ... i red back all, and effectively, it seems i wasn't on the same wave, my bad :o
windpig i'm sorry

No problem, I've been in the same "off wave" situation.


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Aug 22, 2014 13:22 |  #24

Others have already suggested the correct way to get what you want. The one thing you are assuming that has not been explicitly said here is that a wide aperture does not automatically mean shallow depth of field.


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clarnibass
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Aug 24, 2014 00:39 |  #25

MadyGuzzz wrote in post #17109515 (external link)
I am using my 50mm at 1.8 and the background is very clear! Why is that if I am using it at the lowest aperture? Is it my lens or is it me?

What lens would you recommend for family/group portraits where I can get the blurred out background?

50mm f/1.8 is excellent for this. You can get more background blur with longer lenses, but the question is if you have the space ot use them for the frame you want. If you can change the frame you can also make the background more blurry with this lens in the way others suggested.

Re the depth of field that some linked to, that's different. For the same magnification/frame, 50mm at f/1.8 will have shallower DOF than 200mm at f/2.8, but the latter would have a blurrier background.

For the photo you posted, it's difficult to say because we don't know how the room looks like in the parts outside the frame. Possibly you could move them a bit to the left (or maybe even keep them wheere they are) and move more to the right. Remove the lamp and window from the frame (or maybe just keep the lamp on the right, see what you prefer). Stand as farther away as you can, then have them move towards you as much as you are willing to accept the frame i.e. possibly leaving less space above them and/or under them. It's nice that one of them is sitting on the table like that, so you can move the table, or get another chair, or have them both stand, etc.


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Aug 24, 2014 00:42 |  #26

Reservoir Dog wrote in post #17109529 (external link)
The focal length is too short, you are too far from them and they are too near the background ...

Sigma 85mm f/1.4 EX

^^^^ I Agree FL to Short Forground is also not corect


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MadyGuzzz
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Aug 25, 2014 09:35 |  #27

clarnibass wrote in post #17114149 (external link)
50mm f/1.8 is excellent for this. You can get more background blur with longer lenses, but the question is if you have the space ot use them for the frame you want. If you can change the frame you can also make the background more blurry with this lens in the way others suggested.

Re the depth of field that some linked to, that's different. For the same magnification/frame, 50mm at f/1.8 will have shallower DOF than 200mm at f/2.8, but the latter would have a blurrier background.

For the photo you posted, it's difficult to say because we don't know how the room looks like in the parts outside the frame. Possibly you could move them a bit to the left (or maybe even keep them wheere they are) and move more to the right. Remove the lamp and window from the frame (or maybe just keep the lamp on the right, see what you prefer). Stand as farther away as you can, then have them move towards you as much as you are willing to accept the frame i.e. possibly leaving less space above them and/or under them. It's nice that one of them is sitting on the table like that, so you can move the table, or get another chair, or have them both stand, etc.

Awesome thanks so much for the tips! :)




  
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photojohn
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Aug 25, 2014 10:00 |  #28

Yes, that is a good question that I worked through some time ago. Trying to get a lot of space behind your subject will also help with blurring.


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leemik
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Aug 25, 2014 12:02 |  #29

The sensor size will also determine the amount of blur you get.. a camera with a 1.5 crop using the same lens will have slightly less bokeh than the lens on a full frame camera.. It's the reason why you almost get no blur from the cheap point and shoot cameras.


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Aug 25, 2014 12:11 |  #30

leemik wrote in post #17116706 (external link)
The sensor size will also determine the amount of blur you get.. a camera with a 1.5 crop using the same lens will have slightly less bokeh than the lens on a full frame camera.. It's the reason why you almost get no blur from the cheap point and shoot cameras.

You will get the same blur. Same lens, same distance from subject. Then the bokeh will be the same. The difference is that the subject is larger in the photo on a crop camera compared to a full frame camera.


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Background is not blurred enough
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