Pinhole Windmill


Posted by SantaFeJoe on Wed Jul 23, 2014 11:31 am

All times are UTC-05:00

Reply to topic  
 First unread post  | 13 posts | 
Image
A pinhole image of a wooden windmill taken yesterday.
Nikon D700, 25mmabout 45mm(distance from sensor to pinhole in body cap (Thanks for correcting me, Gary!), 1/80 sec., ISO 25,600 for short shutter speed and effect. I was trying to stop the motion of the windmill in a fairly strong breeze.
Copyright Joe A. Roybal
Learn the rules like a pro, so you can break them like an artist.  -Pablo Picasso


Last edited by SantaFeJoe on Fri Jul 25, 2014 12:33 pm, edited 2 times in total.

User avatar
Posted by:
SantaFeJoe
Forum Contributor
Location: Somewhere Out In The Wilds
Posts: 8622
Joined: 28 Jan 2012

   

by SantaFeJoe on Wed Jul 23, 2014 11:39 am
User avatar
SantaFeJoe
Forum Contributor
Posts: 8622
Joined: 28 Jan 2012
Location: Somewhere Out In The Wilds
Here's a sepia version. Please let me know which one you prefer as a pinhole image:
Image
BTW, Live View is about the only way to compose when using such a tiny pinhole, even in bright light.
Thanks,
Joe
Learn the rules like a pro, so you can break them like an artist.  -Pablo Picasso
 

by Gary Briney on Wed Jul 23, 2014 11:49 am
User avatar
Gary Briney
Lifetime Member
Posts: 18291
Joined: 25 Jul 2004
Location: USA
Member #:00336
Great choice of subject and settings Joe, the individual blades show up well. Very clever!
G. Briney
 

by Ron Day on Wed Jul 23, 2014 1:07 pm
User avatar
Ron Day
Lifetime Member
Posts: 17817
Joined: 5 Sep 2003
Member #:00819
I think it is great you are acquiring nice images like this using the pinhole technique!  How do you make the pinhole, and what size or aperture is it?

This windmill is my favorite of those you have posted.  I prefer the color version, but I could see where the sepia version might be desirable in a book or article on the west, for example.
 

by SantaFeJoe on Wed Jul 23, 2014 2:05 pm
User avatar
SantaFeJoe
Forum Contributor
Posts: 8622
Joined: 28 Jan 2012
Location: Somewhere Out In The Wilds
Ron Day wrote:How do you make the pinhole, and what size or aperture is it?
Thanks for your input, Ron. I started out using a tiny drill bit in a holder (not a drill), and just went straight through the center of the cap. It was probably about 1/64 inch I would guess. It was not small enough, as the first images posted reveal. The one I am using now was made by using the same tiny bit on the inside of the body cap until I was just starting to see a dimple (not a hole) in the front of the cap. I then used a larger bit (about 1/8) to countersink the inside almost to the same depth. This is to eliminate flare from the sides of the hole affecting the image. I then twisted a safety pin in the hole from the inside until the tip barely broke through. I then sanded the front of the hole to remove any burr that was present with 600 grit sandpaper, being careful not to enlarge the hole. I also sanded the inside countersunk hole and entire inside surface with 320 grit paper to dull down any reflective surface. Of course, you must wash off the dusty residue. There is no way I can measure the hole, but it is barely visible. I tried the same in copper and it worked well, too, but I like the simplicity of just using the body cap. I also made a "lens hood" by making a 1/3" or so circle of sticky back foam about 1/8 inch thick with a hole about 3/16" that  is centered over the pinhole. It is amazing how little depth of hood is required for a pinhole, but it makes a huge difference in diffraction. The hole size can be enlarged if it's too small, but if you make it too large it would need to be filled up and re-drilled or else a piece of metal with a pinhole will need to be placed over it. Bear in mind that I am totally new to pinhole photography, but am experimenting very seriously with it. Not everyones' cup of tea in a world where sharpness is king, but it opens a new way of seeing things, much like infrared photography also does. Something I discovered yesterday was that aperture preferred exposure seemed to work well. Most articles I had read said to use only manual and I found that was fine with digital because of the instant feedback to tell you where you needed to be. Live view is great for composing, because the image is too dark to see easily through the viewfinder. The f-stop ranges from about f150-200. By using an extension tube and a slightly larger hole in the cap, you can achieve an amazing amount of telephoto, if desired.

Joe
Learn the rules like a pro, so you can break them like an artist.  -Pablo Picasso
 

by Gary Briney on Wed Jul 23, 2014 4:02 pm
User avatar
Gary Briney
Lifetime Member
Posts: 18291
Joined: 25 Jul 2004
Location: USA
Member #:00336
Joe, Sorry I missed seeing the sepia version the first time through. Though I'm usually partial to vintage treatments, in this case I like the color image better, mainly I think because of the contrast of the windmill against the bright blue sky. If you gave the sepia version a strong dose of shadow contrast, and kept the clouds bright as they are now, it could look much more vintage, and then I would probably prefer it over the color version.
G. Briney
 

by Ron Day on Wed Jul 23, 2014 5:57 pm
User avatar
Ron Day
Lifetime Member
Posts: 17817
Joined: 5 Sep 2003
Member #:00819
Joe, thanks for the great narrative on the technical aspects of pinhole photography.  Very interesting and informative!
 

by SantaFeJoe on Thu Jul 24, 2014 8:13 am
User avatar
SantaFeJoe
Forum Contributor
Posts: 8622
Joined: 28 Jan 2012
Location: Somewhere Out In The Wilds
Gary Briney wrote:Joe, Sorry I missed seeing the sepia version the first time through. Though I'm usually partial to vintage treatments, in this case I like the color image better, mainly I think because of the contrast of the windmill against the bright blue sky. If you gave the sepia version a strong dose of shadow contrast, and kept the clouds bright as they are now, it could look much more vintage, and then I would probably prefer it over the color version.
Thanks for your input, Gary! Here's an adjusted version:
Image
I kind of like the way there is a greenish tint in the vegetation on the right (and maybe overall). Your opinion is welcomed, as always.

Joe
Learn the rules like a pro, so you can break them like an artist.  -Pablo Picasso
 

by Gary Briney on Thu Jul 24, 2014 9:56 am
User avatar
Gary Briney
Lifetime Member
Posts: 18291
Joined: 25 Jul 2004
Location: USA
Member #:00336
A more authentic look --- the mill stands out better in this verion.
G. Briney
 

by Cynthia Crawford on Thu Jul 24, 2014 3:28 pm
User avatar
Cynthia Crawford
Moderator
Posts: 20467
Joined: 10 Jun 2006
Location: Vermont
Member #:00733
Hi Joe

I like the color version, but I am always partial to color. The second sepia definitely has merit as it looks more vintage, as does the windmill. Great experiment and results- thanks for the explanation too!
Cynthia (Cindy) Crawford-Moderator, Photo & Digital Art
web site: http://www.creaturekinships.net
"If I Keep a Green Bough in My Heart, the Singing Bird Will Come"  Chinese Proverb
 

by Jackie Schuknecht on Thu Jul 24, 2014 5:37 pm
User avatar
Jackie Schuknecht
Forum Contributor
Posts: 2392
Joined: 12 Aug 2010
Location: Ontario, Canada
Hi Joe, I am partial to the sepia, as I find when an image has quite a few elements the monochrome makes the subject stand out more for me. I will have to read up on your technique later. It sounds fascinating.
Visit my website at www.jackieschuknecht.com
 

by PaiR on Thu Jul 24, 2014 9:33 pm
PaiR
Forum Contributor
Posts: 2300
Joined: 1 Jul 2006
Location: Milwaukee
I like the color version too. You were blessed with some great clouds on that blue sky.

Did you try any with motion blur from the windmill ?
Ram
A photograph is usually looked at – seldom looked into~Ansel Adams
 

by SantaFeJoe on Fri Jul 25, 2014 12:39 am
User avatar
SantaFeJoe
Forum Contributor
Posts: 8622
Joined: 28 Jan 2012
Location: Somewhere Out In The Wilds
PaiR wrote:I like the color version too. You were blessed with some great clouds on that blue sky.

Did you try any with motion blur from the windmill ?
Here's one with motion blur. I didn't like it because the fan of the windmill faded out and the Aeromotor lettering on the windmill was blurred.. The ISO was 200 and the exposure was 1.6 sec.  The first image was shot at ISO 25,600 and 1/80 sec.:
Image
I'm starting to like it more now that I look at it. Let me know what you think.
Thanks for your comments and input! It helps to have different eyes see the possibilities!

Joe
Learn the rules like a pro, so you can break them like an artist.  -Pablo Picasso
 

Display posts from previous:  Sort by:  
13 posts | 

Powered by phpBB® Forum Software © phpBB Group