[rollei_list] Re: DOF (was Re: Rolleiflex 35mm Cameras)
- From: Eric Goldstein <egoldste@xxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Fri, 13 Nov 2009 08:14:45 -0500
Our Richard should be writing and teaching... he has the knack for clarity.
Eric Goldstein
--
On Fri, Nov 13, 2009 at 7:59 AM, CarlosMFreaza <cmfreaza@xxxxxxxxx> wrote:
> Yes, I agree absolutely, if Richard explained DOF that way from the
> beginning, the point would be clear to me from the beginning too, it's
> a knowledge that you learn using DOF calculators and cameras-lenses
> DOF indicators.-
>
> Carlos
>
> 2009/11/13 Eric Goldstein <egoldste@xxxxxxxxx>:
>> Yes. This was covered in the links I provided, but not expressed so
>> simply and elegantly.
>>
>>
>> Eric Goldstein
>>
>> --
>>
>> On Fri, Nov 13, 2009 at 3:27 AM, Richard Knoppow <dickburk@xxxxxxxxxxxxx>
>> wrote:
>>>
>>> ----- Original Message ----- From: "Eric Goldstein" <egoldste@xxxxxxxxx>
>>> To: <rollei_list@xxxxxxxxxxxxx>
>>> Sent: Tuesday, November 10, 2009 7:30 AM
>>> Subject: [rollei_list] Re: Rolleiflex 35mm Cameras
>>>
>>>
>>> It is. Another interesting discussion relative to aperture, DOF and
>>> perceived sharpness:
>>>
>>> http://www.luminous-landscape.com/tutorials/dof2.shtml
>>>
>>>
>>> Eric Goldstein
>>>
>>> Depth of field/depth of focus can be defined as either the amount of
>>> defocusing that produces a constant size circle of confusion or for a circle
>>> of confusion which is a constant percentage of focal length. When the first
>>> definition is used the depth depends only on the physical size of the
>>> aperture. Thus it will be the same for a 100mm lens at f/2.8 as for a 200mm
>>> lens at f/5.6. Where the image from the shorter lens is magnified to equal
>>> the image from the larger lens the DOF will be constant with f/stop. All
>>> this given for a constant distance from the subjects.
>>>
>>> --
>>> Richard Knoppow
>>> Los Angeles, CA, USA
>>> dickburk@xxxxxxxxxxxxx
>>> ---
>>> Rollei List
>>>
>>> - Post to rollei_list@xxxxxxxxxxxxx
>>>
>>> - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' in the
>>> subject field OR by logging into www.freelists.org
>>>
>>> - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with 'unsubscribe' in the
>>> subject field OR by logging into www.freelists.org
>>>
>>> - Online, searchable archives are available at
>>> //www.freelists.org/archives/rollei_list
>>>
>>>
>> ---
>> Rollei List
>>
>> - Post to rollei_list@xxxxxxxxxxxxx
>>
>> - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe'
>> in the subject field OR by logging into www.freelists.org
>>
>> - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with
>> 'unsubscribe' in the subject field OR by logging into www.freelists.org
>>
>> - Online, searchable archives are available at
>> //www.freelists.org/archives/rollei_list
>>
>>
> ---
> Rollei List
>
> - Post to rollei_list@xxxxxxxxxxxxx
>
> - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe'
> in the subject field OR by logging into www.freelists.org
>
> - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with
> 'unsubscribe' in the subject field OR by logging into www.freelists.org
>
> - Online, searchable archives are available at
> //www.freelists.org/archives/rollei_list
>
>
---
Rollei List
- Post to rollei_list@xxxxxxxxxxxxx
- Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe'
in the subject field OR by logging into www.freelists.org
- Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with
'unsubscribe' in the subject field OR by logging into www.freelists.org
- Online, searchable archives are available at
//www.freelists.org/archives/rollei_list
Other related posts:
