I thought I should start a new thread here for a lens brought to notice (by elf) here:
http://www.photomacrography.net/forum/v ... 1684#51684
Specifically:
http://www.flickr.com/photos/43894176@N ... 621236505/
Details/source:
http://www.fujinon.com/ProductDocs/FE185C086.pdf
This could be the lens to use for applications discussed here:
http://www.photomacrography.net/forum/v ... php?t=4569
and here:
http://www.photomacrography.net/forum/v ... =boroscope
(I have inserted a link back to this thread from those two).
Harold
Fujinon FE185C086HA-1 "insect eye" lens
Moderators: rjlittlefield, ChrisR, Chris S., Pau
-
- Posts: 5786
- Joined: Sun Mar 09, 2008 2:17 am
- Location: Reading, Berkshire, England
Fujinon FE185C086HA-1 "insect eye" lens
My images are a medium for sharing some of my experiences: they are not me.
- PaulFurman
- Posts: 595
- Joined: Sat Oct 24, 2009 3:14 pm
- Location: SF, CA, USA
- Contact:
Hmm, is there really any advantage over an SLR fisheye lens? That's a 2.7mm f/1.8-f/16 C-mount video lens at f/10 rated for 5 MP and 7-inch close focus with a Canon MP-E macro lens used as a relay lens to get it up to 35mm, so presumably the image is upside down and probably a smaller effective aperture.
Here's a few closeup test shots with various fisheyes & wideangles:
http://www.flickr.com/photos/edgehill/s ... 64/detail/
the 16mm has closest focus of 12 inches, the 10.5 goes to 5-1/2 inches. The 16mm works with a BR-2 reversing ring used as a 6mm extension tube. In that case, the background goes out of focus. Perhaps with a 3mm extension tube it would be comparable to the c-mount lens above?
I mentioned before the 24/3.5 PC-E for it's tilt to bring near & far into focus without stopping down too much. The examples for this scene don't really pull it off but for certain scenarios it works. Then there's a 30mm medium format fisheye at f/22 tilted with a hand held bag bellows which does allow for the extreme tilts need to pull this off but it is extremely awkward to use. The image quality can be very good with a little less demanding scene. The 24mm won't tilt that far.
Here's a more reasonable use of the 24mm PC-E which is razor sharp at full size in the plane of focus at f/16 and moderately cropped for composition: http://www.flickr.com/photos/edgehill/4075980407/
Here's a few closeup test shots with various fisheyes & wideangles:
http://www.flickr.com/photos/edgehill/s ... 64/detail/
the 16mm has closest focus of 12 inches, the 10.5 goes to 5-1/2 inches. The 16mm works with a BR-2 reversing ring used as a 6mm extension tube. In that case, the background goes out of focus. Perhaps with a 3mm extension tube it would be comparable to the c-mount lens above?
I mentioned before the 24/3.5 PC-E for it's tilt to bring near & far into focus without stopping down too much. The examples for this scene don't really pull it off but for certain scenarios it works. Then there's a 30mm medium format fisheye at f/22 tilted with a hand held bag bellows which does allow for the extreme tilts need to pull this off but it is extremely awkward to use. The image quality can be very good with a little less demanding scene. The 24mm won't tilt that far.
Here's a more reasonable use of the 24mm PC-E which is razor sharp at full size in the plane of focus at f/16 and moderately cropped for composition: http://www.flickr.com/photos/edgehill/4075980407/
- rjlittlefield
- Site Admin
- Posts: 23608
- Joined: Tue Aug 01, 2006 8:34 am
- Location: Richland, Washington State, USA
- Contact:
Sure. The entrance pupil for an SLR fisheye lens is pretty deep inside the lens. With my Sigma 8 mm, it's about 20 mm in back of the front surface of the glass. If I want any perspective from closer than 20 mm, that lens won't work. In contrast, the entrance pupil of my 12.5 mm Rodenstock-Ronar f/1.9, reversed, is only 9 mm inside the glass. Other lenses will have it even closer to the front. The closer to the front you can move the entrance pupil, the more in-your-face perspective you can get.PaulFurman wrote:Hmm, is there really any advantage over an SLR fisheye lens?
--Rik
-
- Posts: 5786
- Joined: Sun Mar 09, 2008 2:17 am
- Location: Reading, Berkshire, England