[pure-silver] Re: Depth of Field (35mm vs. 4x5 or 8x10)
- From: DarkroomMagic <info@xxxxxxxxxxxxxxxx>
- To: PureSilverNew <pure-silver@xxxxxxxxxxxxx>
- Date: Sat, 30 Oct 2004 19:24:52 +0200
Correct!
Regards
Ralph W. Lambrecht
On 10/30/04 2:03 PM, "Barrie Bunning" <barrieb@xxxxxxxxxxxxxxxx> wrote:
> Greetings ;
> If we take 50 mm as being the 'Standard lens for 35mm ' then 100mm is
> double that length:
> If we take 150mm as being the Standard lens for 4"x5"' then 300mm is double
> that length:
> I believe we should compare 'Focal lengths' NOT Film area.
> Cheers Barrie B.
> At 10:48 AM 30/10/2004, you wrote:
>> At 04:36 PM 10/29/2004, Gene Johnson wrote:
>>
>>
>>> 1600mm? You sure about that Jim? I was thinking more like 400. He used a
>>> 100mm on his 35mm camera
>>
>>
>> The 4x5 frame is roughly 16x the 35mm frame. This is all about image
>> magnification. 16x 100 = 1600.
>>
>> But I could be wrong and would gladly accept another proof.
>>
>> Jim
>>
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