Gorgeous as alwaysQuote:
Originally Posted by ImSoNegative
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Gorgeous as alwaysQuote:
Originally Posted by ImSoNegative
I agree you should do that, perhaps you could be the next Ansel by saving precious scenic areas with your imagery...Quote:
Originally Posted by ImSoNegative
Christmas morning, freezing fog
http://math.oit.edu/~watermang/MI_4
http://math.oit.edu/~watermang/MI_7
Awesome, h2oman!
Love the first one!
Awesome composition, nice diagonal lines all over the frame.Quote:
Originally Posted by StoneNYC
Gorgeous shot of a beautiful place.
Regards!
Well thank you very much!Quote:
Originally Posted by Jose Rodriguez
I was a little disappointed at the slight flare on the upper left but it's grown on me. I've since gotten a compendium shade :)
That last one is awesome. What kind of film/dev is that? It almost looks like IR film.Quote:
Originally Posted by h2oman
Thanks, guys. The film was some Ultrafine 125 that I bought in a large package of various films from a forum member. The IR look is due to the fact that the trees were heavily coated with frost.
Great! Have you used any filter?Quote:
Originally Posted by Jose Rodriguez
Regards.
I like the shadows and contrast in that photo.Quote:
Originally Posted by ImSoNegative
I thought that but figured I would ask, thanks, nice work!Quote:
Originally Posted by h2oman
Thanks for your comment!Quote:
Originally Posted by OCM
Without filters, the naked lens.
Regards!
Ice, Rock, and Cascade.
Ausable River, Adirondack State Park, New York, USA
Wista VX / Schneider 210mm f5.6 Apo-Symmar lens / Kodak 4x5 Tri-X Pan in Acu-1 developer
http://i648.photobucket.com/albums/u...ps5c25950f.jpg
Nice!
So many lovely images here it would take too long to comment individually, so I'll just say thank you to everyone who contributes here for taking the time to do so.
It's great to be able to kick back after work and just relax with all the photos posted every day. And to look back through all the pages.
Great shot Duane, really beautiful.
Regards!
http://farm8.staticflickr.com/7004/6...e5a11651_o.jpg
The Jarama river
Santa Barbara Pinhole 75mm 4X5 Camera
Fuji Acros 100
8 sec.
f231
Minolta Spotmeter F
This confuses me, though of course it is a beautiful image, you say it's a pinhole and then you say it's 75mm, can you explain how you've arrived at that I'm not that familiar with pinholes so forgive me if I'm asking a dumb question.Quote:
Originally Posted by Jose Rodriguez
You can purchase them in different focal lengths or get the dimensions for the legnth you want and make your own. The size of The pinhole has more to do with the look, the distance of the pinhole from the film plane gives you your focal length.Quote:
Originally Posted by StoneNYC
Oh! ThanksQuote:
Originally Posted by csxcnj
Yer welcome. Go to B&H and check out pinholes to see the range and size/focal relationships. Go to the Bender website (still up after all these years) to see a really cool pinhole system, one that allows ground glass viewing of the image. Bender is out of business of course so I can't order the system but I'm going to attempt making something similar.Quote:
Originally Posted by StoneNYC
Pinhole cameras are wonderful devices with infinite DOF (with some reservations). There is generally an optimum pinhole diameter size d for a particular focal length F and wavelength of light lambda, a relationship first postulated by Petzval (yes that famous that old timer), such that D = (2 X FX lambda)^1/2.
So for the image above when we apply the Petzval relation we have D = (2 X 75 X .0005)^1/2, which is the sq. root of 0.075 which is .274 mm. That is 274 µm or about 11 mil diameter hole.
The f/no would be FL/d which is 75/.274 which is f/274. He obviously used a slightly different aperture diameter or a different value for lambda. :)
Nate Potter, Austin TX.
I have a Zero Image 4x5 pinhole camera with two extension frames. This means I can shoot 25mm, 50mm and 75mm focal lengths all using the same 0.18mm pinhole. Ideally I would use the "optimal" pinhole diameter for each separate focal length, but I haven't found it to be a problem other than the fact that the f/138 aperture at 25mm becomes a whopping f/417 at 75mm.
Jonathan
I wish I understood that math... My head hurts... I used to be good at this stuff but it's been 10 years since I did any math at all.Quote:
Originally Posted by Nathan Potter
Qué maravilla, Jose. No sabía que tenías una de éstas. Abrazos.Quote:
Originally Posted by Jose Rodriguez
Great photo, Jose. I didn't know that you had that camera. Nice surprise. ;-)
Best regards.
Beautifull...Quote:
Originally Posted by Ken Lee
I like this, very much...Quote:
Originally Posted by Nguss
Well done, Preston.Quote:
Originally Posted by Preston
I try to do the same but, I use split-contrast, too, wich gives me a lot more possibilities, but, sometimes it's hard to get what I want. What's really missing in the darkroom is the "undo" button! ;-)Quote:
Originally Posted by ScottPhotoCo
Stone, I hear ya. Math is a bit like language - if you don't use it regularly it slips into the dark recesses of the mind where it can't be easily extracted. I have that trouble with higher math and I work high tech solid state physics all the time. Notice that Einstein and Stephen Hawking had fellow mathematicians helping them. I believe Einstein used David Hilbert and Hawking uses Roger Penrose.
My note above only uses simple algebra and my example should suffice for the novice. But the notation may be unfamiliar, particularly the form of ( X )^1/2. That is just another way of saying the square root of X. Or √X. Use of the ^ indicates something like X raised to a power or an exponent - rather awkward notation due to the standard keyboard being unfriendly to math symbols.
Nate Potter, Austin TX.
Thanks for your comment!Quote:
Originally Posted by StoneNYC
The camera:
http://farm8.staticflickr.com/7185/6...c90094f1_o.jpg
Thanks Nathan for your comment!Quote:
Originally Posted by Nathan Potter
The real aperture diameter is 0.325, then FL/d = 75/0.325 = f/231
Gracias por tu comentario!Quote:
Originally Posted by OCM
La verdad es que ya no la tengo, la vendí hace unos cuantos meses y la verdad es que la echo de menos.
Algunas veces pienso en comprar una de 8X10 o fabricarmela yo mismo. La lamina con el orificio se puede comprar muy barata por eBay del diametro que se quiera y lo mejor es que ha sido realizado con un laser, que le da mas perfección y por lo tanto mas calidad de imagen.
Saludos!
Thanks for your comment!
The truth is that I no longer have it, I sold the camera a few months ago and sometimes I miss it.
I'm thinking about buying a 8X10 pin-hole camera or to make it by myself.
The metal sheet with the hole can be bought very cheaply (eBay) in the diameter size that you want and the best is that has been done with a laser ray, giving you more perfect circle form and therefore more image quality.
Greetings!
Great shots of a really beautiful place!Quote:
Originally Posted by brucep
Wow! Amazing cloudy skies.
Well done!
There have been some nice photos posted recently. Ken, Preston, Austin, Isaac are just several that come to mind. I finally have some new scans from work done this fall. This first one is taken with Velvia 100 with my Ebony 8x10 using a Nikkor 450. I just starting to learn the tendencies of Velvia 100. It will take some time to understand the film. I would have tried Velvia 50 here, but the wind made it too chancy. This is taken at what is known as the Dells of the Eau Claire River here in Wisconsin.
One more for today. This was taken along the St, Louis River in Jay Cooke State Park in Minnesota. It was my first time there. What a rugged river. Anyway, this image was taken with my Ebony 8x10 using a Fuji 300 5.6 and Velvia 50.
Nice one, Jim. Yeah, v100 is no RVP but there are times when I wish I had some loaded for 8x10.Quote:
Originally Posted by Jim Becia
Here's a new one from a spot close to home.
Homemade camera, 450mm nikkor M @f45, ilford fp4 in pmk N+1
http://farm4.staticflickr.com/3790/1...8b0c94ae_o.jpg
bear creek by vinnywalsh.com, on Flickr
Great photographs, Jim!
I agree!Quote:
Originally Posted by EOTS
Powerful colors!
yes absolutely beautiful.Quote:
Originally Posted by Jose Rodriguez
I could live with a print of the second one in my office.
Greats sutil blacks and smooth whites.Quote:
Originally Posted by vinny
Wow, really beautiful photoQuote:
Originally Posted by Jim Becia
Tim that is my rule as well.Quote:
Originally Posted by ScottPhotoCo
http://farm4.staticflickr.com/3709/1...5b6563d5_z.jpg
http://www.flickr.com/photos/13759696@N02/11853537976/
tree shadows in the woods of Waldoboro Maine. 2013/1/8. 4x5 speed graphic, 190mm wollaston meniscus at f8, fp4+ film in pyrocat hd. Handheld even. Was "on the clock" and didn't have a means of carrying tripod.
Lovely old-timey feel to this one!
http://farm4.staticflickr.com/3807/1...07de1613_c.jpg
http://www.flickr.com/photos/13759696@N02/11864550323/
tree shadows in the woods of Waldoboro Maine. 2013/1/8. 4x5 speed graphic, 190mm wollaston meniscus at f8, fp4+ film in pyrocat hd.
The lines of the shadows conflict with the lines of the tracks/path. The shadows' interference also shows the transition of going from a sunny optimistic field to a shady closed in cold path. You get greeted by the shadows when you leave the sun to enter the woods.
I like it!:)Quote:
Originally Posted by jp498
Provia 100F, Sironar-N 135 5,6
http://farm8.staticflickr.com/7447/1...58306268_o.jpg
4x5 Provia,Sironar-N 135mm by Alex-meshera, on Flickr
http://farm4.staticflickr.com/3822/1...41aaa163_o.jpg
4X5 Provia, SIRONAR 135MM by Alex-meshera, on Flickr
I have posted BW version of the photographs before - now I got a better scan and managed to save the underexposed parts of the image.
New Zealand above Glenorchy, one of my favourite areas when we visited NZ back in 2009.
Tachihara 4x5", Osaka 400/8, E100G
http://farm8.staticflickr.com/7298/1...004af3da_c.jpg
Very nice indeed!
Quote:
Originally Posted by Matus Kalisky