Yo Photographer
Register for FREE!
Go Back   Photography Forum > General Photography Forums > Photography Talk


Log-in/register to unlock all the member quick-links and features!
Reply
Page 3 of 5 < 1 2 3 4 5 >


WildWalker's Avatar
WildWalker
Senior Member
WildWalker is offline
WildWalker is Male
 
Join Date: Aug 2008
Location: Portsmouth, Hants, England
Posts: 622
Comments/Critique welcome You may edit and repost my images but ONLY on this site
 
27-08-08, 10:04 PM
#21

2) Depth of field *important update**

Re: Depth of Field

Hello all,

I hope you don't mind me adding this, but there is something very important about Depth of Field that never seems to get mentioned.

Now, we al know what depth of field is, most of you will have figured that out by now. But there are two very important factors that affect Depth of Field other than simply the Aperture setting (F number)

They are:

1. Lens length
2. Distance from object.

The longer the lens, the generally the shallower the DoF. The Closer you are to an object, the shallower the DoF.

This is very important, especially when doing close up or macro work. The closer you get to an object, the shallower the DoF. So if you are using a Macro lens to take a photo of a flower from just a few inches, changing the aperture can have almost no effect. This is really important.

If you are a few feet from a subject and you are doing a portrait, because you are focussed on that person and are close to them, even with a small aperture, you may not get the person behind them in focus as well (when I say behind, I mean a couple of feet, not directly) So standing back with a bit more zoom might enable you to get both subjects in focus.

So you can see, if I want a narrow DoF, and I can get closer to my object, this will give me a shallow Dof before I have even set the aperture.

I hope this is food for thought for you all

Alan.
Kit 1
Canon 5D Mk11
EF 85mm F1.2 L
EF 17-40 F4 L
EF 100-400 F4.5-F5.6 L
EF 50mm F1.8
Sigma F2.8 28-70mm
Kit 2
Canon EOS 30D
EF-S 18-55mm
EF 35-105mm
EF 70-300
Other Kit
View my profile to see my other kit!


     
Azz's Avatar
Azz
Admin Team
Azz is offline
Azz is Male
 
Join Date: Sep 2007
Location: South Wales, UK
Posts: 15,385
Comments/Critique welcome You may edit and repost my images but ONLY on this site
 
27-08-08, 11:09 PM
#22

Re: Depth of Field

I've merged the threads and added a note to post one Alan
Kit 1
Nikon D300
Nikon 55-200mm VR
Kit 2
Nikon D40
Nikon 18-55mm
My Compact/P&S: Panasonic Lumix TZ7


     
Moonstone
Senior Member
Moonstone is offline
Moonstone is Female
 
Join Date: Mar 2008
Location: uk/usa
Posts: 10,146
 
30-08-08, 02:37 PM
#23

2) Depth of Field

Re: Depth of Field

Here is my attempt


F3.5


F8


F16


F22


     
Azz's Avatar
Azz
Admin Team
Azz is offline
Azz is Male
 
Join Date: Sep 2007
Location: South Wales, UK
Posts: 15,385
Comments/Critique welcome You may edit and repost my images but ONLY on this site
 
30-08-08, 03:13 PM
#24

Re: Depth of Field

Nice example Moon
Kit 1
Nikon D300
Nikon 55-200mm VR
Kit 2
Nikon D40
Nikon 18-55mm
My Compact/P&S: Panasonic Lumix TZ7


     
Greyhawk's Avatar
Greyhawk
Senior Member
Greyhawk is offline
Greyhawk is Female
 
Join Date: Sep 2007
Location: South East
Posts: 1,753
 
30-08-08, 07:28 PM
#25

Re: Depth of Field

Very nice examples, you can really see how the DoF is changing - especially in the background
Kit 1
Canon 20D
Canon 28-135 3.5-5.6 IS USM
Canon 70-300 4-5.6 IS USM
Canon 100 2.8 USM Macro
Canon 10-22mm 3.5-4.5
Canon 50mm 1.4
Canon 85mm 1.8
Other Kit
View my profile to see my other kit!
My Compact/P&S: Canon Ixus V3


     
little me's Avatar
little me
Senior Member
little me is offline
little me is Female
 
Join Date: Jul 2009
Location: Norfolk, UK
Posts: 2,615
Comments/Critique welcome
 
05-07-09, 04:50 PM
#26

Re: Depth of Field

Hello!
I'm brand new to this forum and brand new to photography.
These are my first pictures taken with a 'real' camera.
I'm not sure how much difference you can see, but I learnt lots doing it!

(pictures were cropped but not altered)

I'll have a go at taking pictures of just one object this week.
Em
Kit 1
Canon 550D
Canon 50mm 1.8
Sigma 30mm 1.4
on loan: Tamron 90mm
Kit 2
Canon 300D (in use by my 10 year old)
Other Kit
View my profile to see my other kit!
My Compact/P&S: broken


     
Zoundz's Avatar
Zoundz
Senior Member
Zoundz is offline
Zoundz is Female
 
Join Date: Apr 2008
Location: West Cork, Ireland
Posts: 7,578
Comments/Critique welcome You may edit and repost my images but ONLY on this site
 
05-07-09, 05:05 PM
#27

Re: Depth of Field

I can see some difference, definitely, but I'm not sure it's the best example single object may work better!

Still, I rather like the photos!

xx
Kit 1
Nikon D800
Nikkor 50mm f1.4
Nikkor 24-70mm f2.8
Nikkor 105 mm f2.8 macro
Nikkor 70-200mm f2.8
Sigma 50-500mm F4-6.3 EX DG HSM
Sigma 150-500mm F5-6.3 APO DG OS HSM
Nikon 70-300mm AF f/4-5.6G
Nikon 50mm f1.8
Kit 2
Nikon D700
Other Kit
View my profile to see my other kit!
My Compact/P&S: Fuji finepix bridge


     
Azz's Avatar
Azz
Admin Team
Azz is offline
Azz is Male
 
Join Date: Sep 2007
Location: South Wales, UK
Posts: 15,385
Comments/Critique welcome You may edit and repost my images but ONLY on this site
 
05-07-09, 05:08 PM
#28

Re: Depth of Field

Well done little me! I can see the difference - look at f4 vs f29 in particular

A static object may be easier to see the difference with as you wouldn't have wiggly legs in it
Kit 1
Nikon D300
Nikon 55-200mm VR
Kit 2
Nikon D40
Nikon 18-55mm
My Compact/P&S: Panasonic Lumix TZ7


     
Snapper's Avatar
Snapper
Senior Member
Snapper is offline
Snapper is Female
 
Join Date: Jun 2008
Location: Lincolnshire UK
Posts: 2,714
Comments/Critique welcome
 
05-07-09, 05:53 PM
#29

Re: Depth of Field

Hello Little me, even if you examine the difference between f4 & f10 you will see a big difference, look only at the leaves on the bush in the centre and you will see it is sharper in the latter because in the f10 it is within the depth of field where as in f4 is it not
Kit 1
Pentax K7
Pentax 60-250mm
Sigma 105mm Macro
Pentax 12-24mm
Pentax 50mm 1.4
Sigma 50-500mm (Bigma)
Kit 2
Pentax K20d
Lens as other body
Other Kit
View my profile to see my other kit!
My Compact/P&S: Nikon P80


     
little me's Avatar
little me
Senior Member
little me is offline
little me is Female
 
Join Date: Jul 2009
Location: Norfolk, UK
Posts: 2,615
Comments/Critique welcome
 
05-07-09, 09:58 PM
#30

Re: Depth of Field

OK tried again with a slightly more static object!



I was going to wait until tomorrow to try with a random inaminate object, but she was lying there so relaxed and gorgeous!
Kit 1
Canon 550D
Canon 50mm 1.8
Sigma 30mm 1.4
on loan: Tamron 90mm
Kit 2
Canon 300D (in use by my 10 year old)
Other Kit
View my profile to see my other kit!
My Compact/P&S: broken


     
Reply
Page 3 of 5 < 1 2 3 4 5 >

Tags
Canon 400D, Canon 60mm f/2.8 Macro USM, Depth of Field Aperture, Pentax *istDS, Sigma 28-300

Top
Forum Jump

© Copyright 2008, Yo Photographer   Yo Photographer | Contact Us | Archive | Privacy Statement | Terms of Use | Top