March 2020
160 lp/mm met Leica M7 en Ilford 100D!
14/03/20 13:03
Met de nieuwe generatie beeldsensoren die tussen de 40 en 50 Mp aanbieden, is een scheidend vermogen mogelijk van maximaal tussen de 80 en 90 Lp/mm volgens de testkaart en testomstandigheden die ik gebruik.
Onder dezelfde omstandigheden heb ik de (oude) Ilford 100 Delta onderzocht. Die film is geladen in de Leica M7 met de Apo-Summicron-M 50 mm met een diafragma f/5.6 en de afstand tussen camera (uiteraard op statief) was 2.2 meter. Ontwikkeling in SuperGrain (een verbeterde versie van de klassieke Amaloco AM74). Tot mijn verbazing levert deze combinatie een scheidend vermogen van 160 Lp/mm, dus bijna twee keer zo veel als met de modernste sensoren haalbaar is.
Dus in plaats van veel geld uit te geven aan de upgrade naar een actuele beeldsensor (die gegarandeerd over enkele jaren al weer verouderd is) kun je beter een oude M6 kopen en die laden met film uit de Ilford stal. De bewerking is wat lastiger en tijdrovender, maar de resultaten zijn nog steeds veel beter dan wat je met een actuele en dure beeldsensor kan presteren.
160 lp/mm with Leica M7 and Ilford 100D!
With the new generation of image sensors that offer between 40 and 50 Mp, a separating power of up to between 80 and 90 Lp/mm is possible according to the test chart and test conditions I use.
Under the same conditions I investigated the (old) Ilford 100 Delta. That film was loaded into the Leica M7 and the Apo-Summicron-M 50 mm with an aperture f/5.6 and the distance between camera (of course on tripod) was 2.2 meters. Development in SuperGrain (an improved version of the classic Amaloco AM74). To my surprise, this combination delivers a separation power of 160 Lp/mm, so almost twice as much as is achievable with the most modern sensors.
So instead of spending a lot of money on upgrading to a current image sensor (which is guaranteed to be obsolete in a few years time) you better buy an old M6 and load it with film from the Ilford stable. The editing is a bit more difficult and time consuming, but the results are still much better than what you can achieve with a current and expensive image sensor.
December 2020
November 2020
October 2020
July 2020
June 2020
May 2020
April 2020
March 2020
February 2020
January 2020
December 2019
November 2019
October 2019
September 2019
May 2019
April 2019
March 2019
February 2019
January 2019
December 2018
November 2018
October 2018
September 2018
August 2018
July 2018
June 2018
May 2018
December 2017
September 2017
August 2017
July 2017
June 2017
May 2017
April 2017
January 2017
December 2016
November 2016
October 2016
September 2016
August 2016
May 2016
April 2016
March 2016
February 2016
January 2016
December 2015
November 2015
October 2015
September 2015
August 2015
July 2015
June 2015
November 2020
October 2020
September 2020
August 2020July 2020
June 2020
May 2020
April 2020
March 2020
February 2020
January 2020
December 2019
November 2019
October 2019
September 2019
August 2019
July 2019
June 2019May 2019
April 2019
March 2019
February 2019
January 2019
December 2018
November 2018
October 2018
September 2018
August 2018
July 2018
June 2018
May 2018
April 2018
March 2018February 2018
January 2018December 2017
November 2017
October 2017September 2017
August 2017
July 2017
June 2017
May 2017
April 2017
March 2017
February 2017January 2017
December 2016
November 2016
October 2016
September 2016
August 2016
July 2016
June 2016May 2016
April 2016
March 2016
February 2016
January 2016
December 2015
November 2015
October 2015
September 2015
August 2015
July 2015
June 2015
May 2015
April 2015March 2015
February 2015