Depth of field

[acorreia]

[span style=\'font-size:9pt;line-height:100%\']How I did it[/span]

• [span style=\'font-size:9pt;line-height:100%\']In this table I  have choosen my camera, my lens and my distance      (I use meters of course).[/span]
• [span style=\'font-size:9pt;line-height:100%\']Consulting the table, I could see that[/span]
  • [span style=\'font-size:9pt;line-height:100%\']if I set a distance of 1 meter in the lens       and
  • [span style=\'font-size:9pt;line-height:100%\']if I use f/22 that would give me a depth of       field between 0.38 and infinity.
• [span style=\'font-size:9pt;line-height:100%\']Then, I measured the distance with na instrument like      a tape or whatever, between the sensor plain/layer/surface to a target      which was 1 meter      away.[/span]
• [span style=\'font-size:9pt;line-height:100%\']I target the central point of the focusing      screen to that point and focus.[/span]
• I switch off the auto focus from the lens.[/span]
• I set the aperture at f/22[/span]
• I compose the scene[/SIZE]
• I placed an object at 40 cms (40 cms = 0.40 meter)[/SIZE]
• I now have the object and infinity in focus.[/SIZE]
• I didn’t care with the speed, or I do and have      to think the hole thing over again.[/SIZE]
  • [span style=\'font-size:9pt;line-height:100%\']If I had too much light I would have used the       NDF and/or the CPF.[/span]
  • [span style=\'font-size:9pt;line-height:100%\']I used flash because now I am a maniac of this       kind of light, which is gorgeous as you can see here in my photos and here.[/span]

[span style=\'font-size:9pt;line-height:100%\']Next photo I want to do – if I got the time because my sun asked to go and shoot kitesurf again tomorrow evenning – will be envolving 3 planes/surfaces/areas:[/span]

• [span style=\'font-size:9pt;line-height:100%\']Near the lights of the car - 0.83 cms
• Medium distance the car door or so - 1.26 m
• Far distance, like the street.[/span]

At f/2.8 the 16mm with the lens focused to 1 meter will give me sharpness from 0.83 to 1.26 – the street at the far end will be out of focus and so will be the main lights.

  How about this ?
  Tell me !

[Khun_K]

[span style=\'font-size:9pt;line-height:100%\']How I did it[/span]

• [span style=\'font-size:9pt;line-height:100%\']In this table I  have choosen my camera, my lens and my distance      (I use meters of course).[/span]
  
• [span style=\'font-size:9pt;line-height:100%\']Consulting the table, I could see that[/span]
  • [span style=\'font-size:9pt;line-height:100%\']if I set a distance of 1 meter in the lens       and
  • [span style=\'font-size:9pt;line-height:100%\']if I use f/22 that would give me a depth of       field between 0.38 and infinity.
  
  
• [span style=\'font-size:9pt;line-height:100%\']Then, I measured the distance with na instrument like      a tape or whatever, between the sensor plain/layer/surface to a target      which was 1 meter      away.[/span]
  
• [span style=\'font-size:9pt;line-height:100%\']I target the central point of the focusing      screen to that point and focus.[/span]
  
• I switch off the auto focus from the lens.[/span]
  
• I set the aperture at f/22[/span]
  
• I compose the scene[/SIZE]
  
• I placed an object at 40 cms (40 cms = 0.40 meter)[/SIZE]
  
• I now have the object and infinity in focus.[/SIZE]
  
• I didn’t care with the speed, or I do and have      to think the hole thing over again.[/SIZE]
  • [span style=\'font-size:9pt;line-height:100%\']If I had too much light I would have used the       NDF and/or the CPF.[/span]
  • [span style=\'font-size:9pt;line-height:100%\']I used flash because now I am a maniac of this       kind of light, which is gorgeous as you can see here in my photos and here.[/span]

[span style=\'font-size:9pt;line-height:100%\']Next photo I want to do – if I got the time because my sun asked to go and shoot kitesurf again tomorrow evenning – will be envolving 3 planes/surfaces/areas:[/span]

• [span style=\'font-size:9pt;line-height:100%\']Near the lights of the car - 0.83 cms
  
• Medium distance the car door or so - 1.26 m
  
• Far distance, like the street.[/span]

At f/2.8 the 16mm with the lens focused to 1 meter will give me sharpness from 0.83 to 1.26 – the street at the far end will be out of focus and so will be the main lights.

  How about this ?
  Tell me !

[a href=\"index.php?act=findpost&pid=129952\"][{POST_SNAPBACK}][/a]

Depend on the print size you will get different perspective of depth, the larger you print, the out-of-focus becomes more visible. The best solution is a camera with swing control or just use Helico Focus software to merge pictures of different focus. For digital capture, you may not get clear/sharp picture when the f stops down too much.

[acorreia]

Depend on the print size you will get different perspective of depth, the larger you print, the out-of-focus becomes more visible. The best solution is a camera with swing control or just use Helico Focus software to merge pictures of different focus. For digital capture, you may not get clear/sharp picture when the f stops down too much.
[{POST_SNAPBACK}][/a]

You do know that DOF has an intimate connection with CoC.
The thing here is: Do it KISS (Keep It Simple and Short).

This photo is from an assignment here. [a href=\"http://www.dgrin.com/showthread.php?t=66970]http://www.dgrin.com/showthread.php?t=66970[/url]

Thank for commenting.

[X-Re]

At f/2.8 the 16mm with the lens focused to 1 meter will give me sharpness from 0.83 to 1.26 – the street at the far end will be out of focus and so will be the main lights.

  How about this ?
  Tell me !
[a href=\"index.php?act=findpost&pid=129952\"][{POST_SNAPBACK}][/a]

     What's the actual question??? How do you get everything appearing sharp, or??? The simple answer is.... stop down. Looks like f/16 would do it....

[acorreia]

What's the actual question??? How do you get everything appearing sharp, or??? The simple answer is.... stop down. Looks like f/16 would do it....
[a href=\"index.php?act=findpost&pid=129986\"][{POST_SNAPBACK}][/a]

The actual question is to get a sharp picture from 0,92 cms to infinty and prove it
Or from 0,63 m to 2,41m and prove it
Visualy
This table is useful
Sorry too small !

[kaelaria]

Welcome to photography??

[acorreia]

Welcome to photography??
[a href=\"index.php?act=findpost&pid=130113\"][{POST_SNAPBACK}][/a]

Excuse me ??!! ...
I'm not getting what you mean. Sorry  

[joedevico]

Excuse me ??!! ...
I'm not getting what you mean. Sorry 
[a href=\"index.php?act=findpost&pid=130115\"][{POST_SNAPBACK}][/a]

Antonio -

Your post is taken from another board that you've been posting in...Now that I've read that thread I understand what is going on. Your post here doesn't make much sense taken out of context.

People here are just wondering if you have a question or not? It seems you are just trying to explain how you achieved a large DOF with this shot using an online calculator. If so that's fine - although you should write something at the top of the post that states this.  

jdv

[acorreia]

Antonio -

Your post is taken from another board that you've been posting in...Now that I've read that thread I understand what is going on. Your post here doesn't make much sense taken out of context.

People here are just wondering if you have a question or not? It seems you are just trying to explain how you achieved a large DOF with this shot using an online calculator. If so that's fine - although you should write something at the top of the post that states this.  

jdv
[a href=\"index.php?act=findpost&pid=130120\"][{POST_SNAPBACK}][/a]

OK I accept the critique and I will try to do something better next time.

However, I see no harm in posting the same subject in different foruns.
It's kind of curious: always different points of view.

[joedevico]

OK I accept the critique and I will try to do something better next time.

However, I see no harm in posting the same subject in different foruns.
It's kind of curious: always different points of view.
[a href=\"index.php?act=findpost&pid=130131\"][{POST_SNAPBACK}][/a]

Antonio -

It's not that you posted in different forums, it's that at the end of you post, you ask the question

"How about this ?
Tell me !"

I think it boils down more to a language barrier more than anything else. If the top of your post said - "Here's a shot I took to demonstrate extreme DOF." There would not be anyone wondering whether or not you had a problem. People were wondering if you were looking for help and since they don't have the background about why you were posting this image they were a bit confused.  

jdv

[acorreia]

Antonio -

It's not that you posted in different forums, it's that at the end of you post, you ask the question

"How about this ?
Tell me !"

I think it boils down more to a language barrier more than anything else. If the top of your post said - "Here's a shot I took to demonstrate extreme DOF." There would not be anyone wondering whether or not you had a problem. People were wondering if you were looking for help and since they don't have the background about why you were posting this image they were a bit confused.   

jdv
[a href=\"index.php?act=findpost&pid=130134\"][{POST_SNAPBACK}][/a]

OK OK.
May be also a question of culture ?!

I mean my problem not yours ...

[trigeek]

Antonio,
Thanks for posting this work flow. It's something that one could figure out if thought about for a bit, but having the step by step is a real time saver. I printed it out and is in my notebook. Also thanks for the link.
Regards,
Jim

[acorreia]

Antonio,
Thanks for posting this work flow. It's something that one could figure out if thought about for a bit, but having the step by step is a real time saver. I printed it out and is in my notebook. Also thanks for the link.
Regards,
Jim
[{POST_SNAPBACK}][/a]

Thank you Jim.
I have re-writen the work flow, trying to correct what I think it was wronge.
Here is the final text. I hope you find this better than before.

[span style=\'font-size:9pt;line-height:100%\']How I did it[/span]

• [span style=\'font-size:9pt;line-height:100%\']In this [a href=\"http://www.dofmaster.com/doftable.html]table[/url] I  have choosen my camera, my lens and my distance      (I use meters of course).[/span]
  
• [span style=\'font-size:9pt;line-height:100%\']Consulting the table, I could see that[/span]
  • [span style=\'font-size:9pt;line-height:100%\']if I set a distance of 1 meter on the lens and[/span]
  • [span style=\'font-size:9pt;line-height:100%\']if I use f/22 that would return me a depth of field between 0.38m and infinity.[/span]
• [span style=\'font-size:9pt;line-height:100%\']Then, I measured the distance with an instrument like a tape or whatever, between the sensor plain/layer/surface and the target (which was 1 meter away).[/span]
• [span style=\'font-size:9pt;line-height:100%\']I targeted the central point of the camera to that point and focused with AF (Auto Focus) On.[/span]
• [span style=\'font-size:9pt;line-height:100%\']I switched off the AF.[/span]
• [span style=\'font-size:9pt;line-height:100%\']I set the camera on Aperture priority and I set the aperture at f/22[/span]
• [span style=\'font-size:9pt;line-height:100%\']I composed the scene[/span]
• [span style=\'font-size:9pt;line-height:100%\']I placed an object at 40 cms (40 cms = 0.40 meter)[/span]
• [span style=\'font-size:9pt;line-height:100%\']I now have the object and the infinity in focus.[/span]
• [span style=\'font-size:9pt;line-height:100%\']I didn’t care about the speed.[/span]
  • [span style=\'font-size:9pt;line-height:100%\']If I had too much light I would have used the NDF and/or the CPF.[/span]
  • [span style=\'font-size:9pt;line-height:100%\']I used flash because now I am a maniac of this kind of light, which is gorgeous as you can see here in my photos and here.[/span]

I didn't care about diffraction either !
Lots of infos about this subject here.

0.38 centimeters = 0.013 feet/0,150 inches - 0.40 centimeters = 0.0131 feet/0,157 inches - 1 meter = 3.281 feet/39.370 inches
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