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Fun with MF images - ARCHIVED - FOR VIEWING ONLY

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Don Libby

Well-known member
This is the result of 3-drops (red, blue and green) in a pool of colored water. Fuji GFX 50s, GF120mm, 3-flashes (one directly over top) f/11 blub mode (1-second) ISO 400.
 
D

Deleted member 7792

Guest
"Abandoned", Saskatchewan. Rollei 6008 on 120 Kodachrome. I loved that film!
Wonderful, Bill. :thumbup: The composition, soft tones, sense of depth, and subject matter all appeal. Reminds me of Andrew Wyeth's "Christina's World", one of my favorite paintings.

Joe
 

MGrayson

Subscriber and Workshop Member
Rolling Shutters and Spinning Fans

The X1D does allow for one of my favorite artifacts. Scanning backs do a really marvelous job. The math isn't complicated (followup post).





Best,

Matt
 

MGrayson

Subscriber and Workshop Member
<:lecture:>
So what are those shapes made by scanning backs or rolling shutters photographing windmills or fans? It's easier on the brain to think of the scan as going left to right, then we have x = a*t, where t is time (t = 0 is the center of the frame) and a is the scanning speed. But the fan is a radial line y = slope*x, where slope = Tan(b*t - c), where b is the angular speed and c is the angle at time t=0. Substituting t = x/a, we get y = x*Tan((b/a)*x - c), or y = x*Tan(d*x - c), where d is the ratio of angular velocity to scanning speed.

Plot those functions for a fixed value of d and different values for c and you get the curves (turned 90 degrees) that appear in the above pictures.

</:lecture:>,

Matt
 

Craig Stocks

Well-known member
Some light painting at Brunet Island State Park in Wisconsin. The majority of the light is from me walking on a path along the left side of the inlet while holding a light wand. Additional frames were captured and combined by using the camera's timelapse tool while I walked around with the light wand and an LED flashlight. I then chose and combined frames in Photoshop. The original sky was late blue hour with quite a few stars but not very dramatic so I substituted a sky image from a week earlier. Phase One XF / IQ 3100 with 35mm BR.

 

Don Libby

Well-known member
some light painting at brunet island state park in wisconsin. The majority of the light is from me walking on a path along the left side of the inlet while holding a light wand. Additional frames were captured and combined by using the camera's timelapse tool while i walked around with the light wand and an led flashlight. I then chose and combined frames in photoshop. The original sky was late blue hour with quite a few stars but not very dramatic so i substituted a sky image from a week earlier. Phase one xf / iq 3100 with 35mm br.
wow!!!
 

dave.gt

Well-known member
Rolling Shutters and Spinning Fans

The X1D does allow for one of my favorite artifacts. Scanning backs do a really marvelous job. The math isn't complicated (followup post).





Best,

Matt
What a long, strange trip it's been....:thumbs: Cool! Astonishingly so....
 

stngoldberg

Well-known member
This is a massive Beech tree..well over 50 yards high and wide..located in the back yard of ‘The Elms” mansion in Newport
After photographing this tree on multiple occasions, I admit my inability to adequately capture it’s presence.
Stanley
 
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