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02-08-2019, 01:35 PM   #1
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Introduction and comment on Smooth Transitional Focus

Hi, I read the articles on STF lenses and was surprised to read that no camera can achieve STF ? I believed the Minolta film camera the Dynax 7 [also known as the Maxxum 7] was the "only" camera to achieve STF in camera and has a setting just for that ? Albeit not for moving objects, but that distinction exists in the article anywat as no images with moving objects were used.

02-08-2019, 01:36 PM   #2
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QuoteOriginally posted by minolta4me-kevin Quote
Hi, I read the articles on STF lenses and was surprised to read that no camera can achieve STF ? I believed the Minolta film camera the Dynax 7 [also known as the Maxxum 7] was the "only" camera to achieve STF in camera and has a setting just for that ? Albeit not for moving objects, but that distinction exists in the article anywat as no images with moving objects were used.
Welcome to the forum.

Do you have a link to the article?
02-08-2019, 01:38 PM   #3
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Smooth Trans Focus: The Ultimate Guide - Articles and Tips | PentaxForums.com

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02-08-2019, 01:40 PM   #4
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Thank you Adam

02-08-2019, 02:24 PM - 1 Like   #5
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STF is generally a property of the lens and requires specific changes to the design of the elements adjacent to the aperture iris. In theory, one could make an apodization filter for any lens that has a waterhouse stop (i.e., a removable stop).

STF can be simulated by any camera by taking and superimposing a set of shots taken at different apertures (that seems to be what the Minolta did). As a multi-exposure technique it requires a stationary subject and a stationary camera so that all the shots align nicely. These days, any digital camera can do it, especially if one can use remote control software to fire off a set of shots.
02-15-2019, 01:16 PM   #6
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Welcome to the forum, I must admit this is a technique or a shooting style that I've never had a need for.
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