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Archive 2010 · ROKKOR Wide/UlW Image Thread
  
 
Ed Sawyer
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p.3 #1 · ROKKOR Wide/UlW Image Thread


Yes, due to refraction of the glass, also the thickness is a factor (thicker = puts focus point more rearward) essentially a "slowing" of the light, puts the focus at a different place than it would be otherwise. it only applies to filters at the back (or middle) of the lens, not the front. There's an optical formula that allows calculation of it but I don't have it offhand. It's why sometimes you see "thick" elements that could otherwise not have so much glass "doing nothing" in the middle of the element. It's done to move the image back, mostly seen in retrofocus lenses.


Jan 15, 2011 at 11:07 PM
Bifurcator
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p.3 #2 · ROKKOR Wide/UlW Image Thread


Yeah, I think I know what you mean. I cleaned a lens for a friend not too long ago (The Sigma AF 24mm f/2.8, Nikon mount) and there was a doublet with a lens on top and a loooong straight that was as you say "doing nothing" - just shifting a node. When I saw that I wondered why they didn't just make the lens more of a pancake - but then again maybe this element is different lengths in the different mounts to compensate for the different flange depths. <shrug>



Some on-line images of the lens being discussed.



Not a very sharp lens BTW... Rather mediocre all around...





Jan 16, 2011 at 09:17 AM
cavewalker
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p.3 #3 · ROKKOR Wide/UlW Image Thread


Rokkor 2.8/24
long time exposure to get the water fluid




Jan 17, 2011 at 12:25 PM
rsrsrs
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p.3 #4 · ROKKOR Wide/UlW Image Thread


: cavewalker

what body do u use?



Jan 17, 2011 at 03:20 PM
sebboh
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p.3 #5 · ROKKOR Wide/UlW Image Thread


beautiful shot cavewalker!

here's a b&w from the same lens wide open:







Jan 17, 2011 at 04:54 PM
cavewalker
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p.3 #6 · ROKKOR Wide/UlW Image Thread


thx sebboh
rsrsrs: EOS 5D Mark2



Jan 17, 2011 at 05:20 PM
Bifurcator
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p.3 #7 · ROKKOR Wide/UlW Image Thread


Hmmm, is that someone's shadow in the middle of a beautiful waterfall?






Jan 17, 2011 at 07:08 PM
cavewalker
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p.3 #8 · ROKKOR Wide/UlW Image Thread


Bifurcator wrote:
Hmmm, is that someone's shadow in the middle of a beautiful waterfall?





mine and the trees



Jan 17, 2011 at 07:31 PM
Bifurcator
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p.3 #9 · ROKKOR Wide/UlW Image Thread


And you didn't move the tree?






Jan 17, 2011 at 10:20 PM
Daniel Heineck
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p.3 #10 · ROKKOR Wide/UlW Image Thread


This needs an injection of photos. 3 from the MD Rokkor 28/2 55mm filter on a 5d. Probably between f5.6 and f8. Standard processing and less/no saturation pumping outside of my regular raw defaults.





















Jan 18, 2011 at 06:38 AM
 

Search in Used Dept. 



Bifurcator
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p.3 #11 · ROKKOR Wide/UlW Image Thread


Daniel Heineck wrote:
This needs an injection of photos. 3 from the MD Rokkor 28/2 55mm filter on a 5d. Probably between f5.6 and f8. Standard processing and less/no saturation pumping outside of my regular raw defaults.

http://farm6.static.flickr.com/5210/5366484722_04e59bd8c1_o.jpg
http://farm6.static.flickr.com/5206/5366484688_e49ae5f2e3_o.jpg
http://farm6.static.flickr.com/5003/5366484668_a953e176ba_o.jpg




Spectacular!



Jan 18, 2011 at 09:30 AM
Daniel Heineck
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p.3 #12 · ROKKOR Wide/UlW Image Thread


Bifurcator wrote:
Spectacular!


Thanks! I pretty much just had to show up and aim this there camera in some kind of direction to get good shots that night. Shooting fish in a barrel.



Jan 18, 2011 at 05:37 PM
mikek200
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p.3 #13 · ROKKOR Wide/UlW Image Thread


All 3 are outstanding..
#3 is my favorite,a truly beautiful shot.
Nicely done..



Mikek200



Jan 18, 2011 at 06:19 PM
sebboh
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p.3 #14 · ROKKOR Wide/UlW Image Thread


Daniel Heineck wrote:
Thanks! I pretty much just had to show up and aim this there camera in some kind of direction to get good shots that night. Shooting fish in a barrel.


fantastic shots indeed! i'm definitely jealous of your landscape in san diego.



Jan 19, 2011 at 08:54 PM
Daniel Heineck
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p.3 #15 · ROKKOR Wide/UlW Image Thread


Thanks all! We had a couple of super spectacular days where the air was really dry, which made for even better than normal shooting conditions. Glad you enjoyed them.




Jan 19, 2011 at 11:34 PM
sebboh
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p.3 #16 · ROKKOR Wide/UlW Image Thread


the 28/2 that i ordered finally arrived. haven't gotten a chance to really shoot it yet but here's a couple of test shots of what i have around me.

wide open:















not wide open:





i think i will definitely like this lens, though i'm a bit concerned - the rear element has a lot of cleaning marks.



Jan 26, 2011 at 03:09 AM
sebboh
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p.3 #17 · ROKKOR Wide/UlW Image Thread


some more shots with the 28/2. still haven't had a chance to take it anywhere other than work and home to take some more interesting shots, but i'm hoping to keep this thread alive.

@f/5.6:










wide open:

















Feb 11, 2011 at 05:37 PM
Bifurcator
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p.3 #18 · ROKKOR Wide/UlW Image Thread


sebboh wrote:
the 28/2 that i ordered finally arrived. haven't gotten a chance to really shoot it yet but here's a couple of test shots of what i have around me.

wide open:
http://farm6.static.flickr.com/5096/5387904905_e4c3224f38_o.jpg
http://farm6.static.flickr.com/5256/5389329020_76f585949e_o.jpg



Dig the crab-legs! I can totally see these two on the wall complimenting each other!

Nice!



Feb 11, 2011 at 06:10 PM
sebboh
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p.3 #19 · ROKKOR Wide/UlW Image Thread


Bifurcator wrote:
Dig the crab-legs! I can totally see these two on the wall complimenting each other!

Nice!


thanks! i started doing those types of shots just to get a feel for new lenses bokeh (what is the plural of bokeh?), but i really like how they work out with my rokkor 50/1.4 and 28/2. i'm slowly building a portfolio of random weed abstracts covering the entire color palette.



Feb 11, 2011 at 09:14 PM
Edgars Kalnins
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p.3 #20 · ROKKOR Wide/UlW Image Thread


I suspect that you could make any lens shine, Sebboh. lovely shots!


Feb 11, 2011 at 09:26 PM
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