Search found 595 matches
- Sun Oct 02, 2011 4:44 pm
- Forum: Nature Photography -- Macro and Close-up
- Topic: Orbweaver
- Replies: 0
- Views: 1201
Orbweaver
Hey, long time no see, I've been on other tracks but did a few stacks yesterday and thought I'd share: Orbweaver Spider on Gum Plant Pier 94 Salt Marsh, San Francisco -handheld focus stacks of a few shots each. -85mm f/2.8 PC Micro with extension tube -ISO 800 1/300ish f/13ish overcast skies https:/...
- Mon Jul 18, 2011 11:07 am
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Crane fly-Típula-Tipulidae (56 pictures stack)
- Replies: 10
- Views: 3188
LED's, even white ones produce discrete spectra. I suspect you're thinking of LED arrays in which RGB light gets produced in a single step, straight from the semiconductors. However, typical "white" LED's use a two-step process involving phosphors, which fill in the spectrum pretty well. You're lef...
- Fri Feb 25, 2011 6:31 pm
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: DOF and Sensor Size
- Replies: 20
- Views: 9442
The Nikon Multiphot was designed for large-ish format macro work.
Bjørn Rørslett's page:
BTW, Thank you Rik for commenting!
Bjørn Rørslett's page:
Macro-Nikkors are excellent performers and within their specified magnification range will cover up to 4x5" format with ease.
BTW, Thank you Rik for commenting!
- Mon Feb 21, 2011 11:27 pm
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: DOF and Sensor Size
- Replies: 20
- Views: 9442
DOF and Sensor Size
Here's an interesting discussion on alt.photography: Re: DOF and Sensor Size The premise by my reckoning is that smaller sensors actually have an advantage for macro because they are not working in the macro realm as soon as a larger sensor (where effective aperture can limit things due to diffracti...
- Fri Dec 31, 2010 1:18 pm
- Forum: Nature Photography -- Macro and Close-up
- Topic: Leaf cutter ant video (not mine)
- Replies: 1
- Views: 1236
Leaf cutter ant video (not mine)
Some pretty impressive video of leaf-cutter ants cutting leaves:
http://www.sciencefriday.com/program/archives/201012312
-not mine!
-the last 2/3 is actual footage
http://www.sciencefriday.com/program/archives/201012312
-not mine!
-the last 2/3 is actual footage
- Sun Dec 19, 2010 4:39 pm
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Assorted flower stacks
- Replies: 10
- Views: 3115
- Tue Nov 09, 2010 6:38 pm
- Forum: Equipment Exchange
- Topic: Looking for Voightlander 125mm f/2 for Nikon.
- Replies: 13
- Views: 8046
- Tue Nov 09, 2010 6:35 pm
- Forum: Equipment Exchange
- Topic: Looking for Voightlander 125mm f/2 for Nikon.
- Replies: 13
- Views: 8046
I got one with a pentax screw mount which adapts somewhat usably to Nikon for focus up to about 15 feet away I think. The price for Nikon mount version is disproportional. The aperture control pin needs to be glued in and the square lens shade doesn't align (if anyone wants that shade, I've got one)...
- Mon Nov 08, 2010 7:33 pm
- Forum: Nature Photography -- Macro and Close-up
- Topic: Robber Fly (Cerotainia sp) and prey
- Replies: 10
- Views: 3045
Oops, sorry, it was Assasin Bugs, not Robber Flies: http://news.discovery.com/animals/assas ... iders.html
- Mon Nov 08, 2010 6:52 pm
- Forum: Nature Photography -- Macro and Close-up
- Topic: Robber Fly (Cerotainia sp) and prey
- Replies: 10
- Views: 3045
- Mon Nov 08, 2010 6:34 pm
- Forum: Administrator's Appreciation Gallery...Photography Through the Microscope
- Topic: Spiders No.15 - Pholcus phalangioides Hatchlings.
- Replies: 8
- Views: 7938
- Sun Nov 07, 2010 5:23 pm
- Forum: Equipment Discussions
- Topic: Unusual Lens (not necessarily a macro lens)
- Replies: 12
- Views: 6055
Craig, I can use a macro lens to focus on the virtual image and get it to fill the FX frame that way, or I can put a 1.4x teleconverter on but that effectively stops it down, and appears to increase DOF, which sort of loses interestingness. I did try various other lenses as shown in your link withou...
- Sun Nov 07, 2010 12:26 pm
- Forum: Equipment Discussions
- Topic: Unusual Lens (not necessarily a macro lens)
- Replies: 12
- Views: 6055
Harold, what is the back focus for that lens? If it's for 35mm slides, it will cover a 35mm sensor but might not focus to infinity. I got started on this looking at movie theater projection lenses, which are supposed to work on DSLRs, old ones with about 100mm f/1.8 specs seem to go for $50 +- The k...
- Sat Nov 06, 2010 3:21 pm
- Forum: Equipment Discussions
- Topic: Unusual Lens (not necessarily a macro lens)
- Replies: 12
- Views: 6055
Humm, not bad Paul---beautiful bokeh! Does it appear to be symetrical, PMF=1? Far from symmetrical; from the rear, the pupil appears to be 1-3/4 inches wide, looking into the front it looks about 1/4 inch diameter, so that's a pmf of 0.14? I always mess up the math though! Does that mean at 5x, it ...
- Sat Nov 06, 2010 12:23 pm
- Forum: Equipment Discussions
- Topic: Unusual Lens (not necessarily a macro lens)
- Replies: 12
- Views: 6055
Bob, Well, it does sort of work reversed, I just reversed the two-tripod arrangement shown: http://www.photomacrography.net/forum/userpix/790_DSC_5225_1.jpg That has about three inches between the lens and subject with the camera almost touching the front element and some black material draped over ...