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Old flour mill, Deschambault, Quebec
Lens: 645 FA 150-300 mm f/5.6 Camera: Pentax 645Z Photo Location: Deschambault, QC ISO: 100 Aperture: F11 
Posted By: RICHARD L., 10-24-2019, 11:32 AM








Here is a series of pictures I took this morning of an old flour mill roof in rural Quebec. The 645Z was tripod-mounted on a heavy Manfrotto 028. First picture was made @ 150 mm, 1/400 sec and f/11. The second one was made @ 220 mm, 1/320 sec and f/11. The third was made @ 300 mm, 1/250 sec and f/11. I made a comprehensive series of pictures using f/5.6, f/8, f/11 and f/16 at each of these focal lengths. In landscape photography, we have the luxury of time, so I never shoot any of my lenses wide-open. With use, I determine what the optimum aperture is and I set this aperture (usually f/11 on 645 lenses). In cinema, they determine the best aperture of the lenses they are using and set it permanently with a small screw so that the lenses are always providing the best images possible. I don't put screws but experience dictates what the optimum aperture is. Shooting a cedar shingle roof like this is pretty much the same as shooting a "proverbial" brick wall, only more interesting graphically. A lens has to be good to shine on a 50 Mpx sensor like the 645Z.

Last edited by RICHARD L.; 10-24-2019 at 12:13 PM. Reason: Pictures don't appear.
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10-24-2019, 12:01 PM   #2
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Pictures do not show for me. If I try to open them in a new window, it says
QuoteQuote:
Invalid Attachment specified. If you have just posted a new thread in the Marketplace and are a new user, it will be made visible shortly. If you followed a valid link, please notify the administrator.
10-24-2019, 12:18 PM   #3
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I tried to add new copies of the pictures ... I hope it works this time !
10-24-2019, 12:20 PM   #4
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QuoteOriginally posted by RICHARD L. Quote
I tried to add new copies of the pictures ... I hope it works this time !
all I get now are three small {unclickable} frames.

10-24-2019, 12:27 PM   #5
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QuoteOriginally posted by RICHARD L. Quote






Here is a series of pictures I took this morning of an old flour mill roof in rural Quebec. The 645Z was tripod-mounted on a heavy Manfrotto 028. First picture was made @ 150 mm, 1/400 sec and f/11. The second one was made @ 220 mm, 1/320 sec and f/11. The third was made @ 300 mm, 1/250 sec and f/11. I made a comprehensive series of pictures using f/5.6, f/8, f/11 and f/16 at each of these focal lengths. In landscape photography, we have the luxury of time, so I never shoot any of my lenses wide-open. With use, I determine what the optimum aperture is and I set this aperture (usually f/11 on 645 lenses). In cinema, they determine the best aperture of the lenses they are using and set it permanently with a small screw so that the lenses are always providing the best images possible. I don't put screws but experience dictates what the optimum aperture is. Shooting a cedar shingle roof like this is pretty much the same as shooting a "proverbial" brick wall, only more interesting graphically. A lens has to be good to shine on a 50 Mpx sensor like the 645Z.
Picture taken @ 300 mm and f/11 with a 645Z and an FA 150-300 mm f/5.6 zoom lens.

---------- Post added 10-24-19 at 03:29 PM ----------

Sorry for the mess, I don't know what happened here, maybe the files are too heavy ...
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