View allAll Photos Tagged LensCap
This is not a fisheye, it really is a rectilinear lens!
The ring on the left side slides over the petal shaped hood, it's both part of the lenscap and serves as filter holder when needed.
This one is the early manual focus version, there are also AF models.
About the ArnoShutter
This is the prototype of my DIY shutter system to take strobed macrophoto’s in combination with my ArnoSync controller. The shutter concept is very simple : a single solenoid winded on a suitable ferro kernel and embedded in a resin with the size and shape of a sugar cube. A light weight armature cut out of a piece of 0.25 mm (250 micron) thick polycarbonate and a suitable Neodymium (NdFeB) magnet forms the heart of the shutter. My previous DIY shutter anno 2010, was built around a voicecoil of an old 3.5 inch harddisk. Both shutter systems have about the same response times but this version is much more lighter and simpler to build. Finding (enough) suitable harddisk servo systems to experiment is not always easy. A typical shutterlag of 5 msec to full open, and another 5 msec to be fully closed can be achieved. The shutter armature is cut from a piece of polycarbonate or equivalent material. I did also tests with several other materials such as 0.10 mm thick aluminum striped from a beercan or plastic material used in the food-package industry. Also some blister package material from electronic devices are usable, but then some parts must be painted in black to make it opaque. Until now the shutter system in the field uses black 0.25 mm (250 micron) polycarbonate material from Sabic- Lexan FR25A. It has shown the best overall specs in terms of weight, strength and durability. Building a double armature version with a single coil or a double coil version with a single armature are possible alternatives to be investigated. This may help to shorten the shutter lag and close times which is a must for this kind of macrophotography. This is of course an ideal job for the coming winter. This DIY shutter system keeps me busy as a retired engineer and the experiments brings my a lot of fun. Unfortunatly my big hands and dito fingers are sometimes a big handycap to work with this very smal parts. In the good old day’s (seventies) when dinausurus where speeking, I developed a simular application for an electronic jacquard card cutting machine, so it nice to play with permanent magnets again.
Specifications of Prototype - status november 2012
Shuttertime to fully Open : 5 msec
Shuttertime to fully Close : 5 msec
Shutter aperture Opening : 16 mm for Nikon D50 - 18 mm for Olympus XZ-1 camera
Shutter housing : 80 / 70 mm Waterpipe cover in PVC or a suitable 52 mm or 58 mm lenscap
Solenoid dimensions : 20 mm X 15 mm X 10 mm
Dimensions FE Core : 20 mm X 7 mm X 2 mm
Shutter blade material : Sabic FR25A Polycarbonate Lexan foil with a thickness of 0.25 mm
Permanent magnet : Neodymium (NdFeB) blokmagneet 7 mm X 6 mm X 1.2 mm
Coil resistance (350 windings of 0.3 mm copperwire) : ca. 4 ohm
Operation voltage (via 5 Volt DC/DC converter) : 24 tot 30 volt DC op 1000 uF
Driver : IRF540N Hexfet
Number of shutter operations with one 4 X AA batterij set : > 2000 operations
Exspected shutter lifetime : > 20.000 operations
Produced operation noise : moderate – sounds like typing a character on a keyboard
Total weight : 40 gram
Total component cost : ca. 8 Euro (10 dollar)
See also : arnoshutter.blogspot.be/ (mostly in dutch)
My other equipment : www.flickr.com/photos/arnoldus1942/sets/72157622920371551/
ArnoShutter on the test bench (video) : www.youtube.com/watch?v=QHDq8Jh5BMs
I'm also dreaming that I'm the owner of a nice 3D printer (see some spec's here) which is
an ideal tool for making this kind of small parts, but actualy it cost a little too much to justify it ...
the temperature rose to about 20 degrees and the sun was out. Good enough for a beer on the deck. I was home early because of an appointment.
I'd rather be watching The Hills.
Yes, it's a little early over hurrr. But I know I'll forget tomorrow. And it's Wednesday somewhere..hbw.
I thought it would be good to post a shot from my new DSLR along with the remaining outtakes from my previous camera.
Thanks Mike, for the suggestion.
Canon EOS 630 camera, with modified body cap and handmade pinhole. Approximately f/180.
I haven't been very successful using this pinhole camera as the images are too soft-focus for my taste. It may be in part due to the small size of the negative and the required enlargement of any prints to viewing size.
The blurriness could also be due to a not optimum pinhole size. I'll need to experiment more.
[ADDENDUM: March 2010 - I came across the following online calculator that provides the optimum pinhole size given a focal length:
www.photostuff.co.uk/pinholec.htm
For a 50mm focal length pinhole camera, I need a 0.3 mm pinhole. Given that, I can expect a f/stop of 167.
My original pinhole may have been too small and at least part of the reason for the extra soft focus.]
Okaya Optical Works Lord 4D
Japanese 35mm format rangefinder.
Start production circa 1957.
I saw this Lord 4D on a recent photographica fair and immediatly noticed that it stood out from other Japanese rangefinders from that period in time in some points. As this particular camera was broke i got it cheap. It even still had its original lenscap.
It has a Seiko Seikosha MXL leaf shutter.
Unusual on this MXL is the fact that it has three possible flash sync speeds : M, F, X
As an instruction manual of this Lord 4D could not be found for free on the Internet i had a look in manuals of other cameras sporting this shutter.
M - pre-ignites the flash 20 millisec. before the shutter is fully open
F - pre-ignites the flash 5 millisec. before the shutter is fully open
X - ignites the flash when the shutter is fully open.
Further information can be found here :
Sorry for the boring photo, I have not taken any cool ones in forever, but I have a series planned and hopefully some of those will be taken soon!I have some exams next week so this weekend is one of maths revision, which as you might have guessed is no fun. Although on Wednesday I'm off down to London with a few other people from my school to see the Olympic Village and some aquatics event, so I'm looking forward to that. I got tagged by Emily, Ellie and Katherine so I suppose I better do it :)
The tag is to write down my four favourite songs and tell you all why they mean so much to me. This is probably going to be really hard for me because I'm so bad at deciding these things, but those other guys made some really good choices!
#1 Ron Pope - Drop In The Ocean
A drop in the ocean, a change in the weather, I was praying that you and me might end up together.
I just really love the lyrics to this song, and his voice is so beautiful that I just have this on repeat all the time. I think it's so beautiful if you haven't already heard it. "It's too late to cry, too broken to move on." Sorry, just had to add another lyric in there.
#2 Parachute - Philadelphia
Cause sometimes it's the demons, that are standing in the end.
she thought that love was gonna fight,
she thought that love was gonna take her home,
she thought that love was gonna save her,
but love just never showed.
I'm just really a fan of a song because of the lyrics, and in this I really just love the words, I love the rest of the song too because Parachute are wonderful but yeah, it's a great song with a great meaning.
#3 Lady Antebellum - Stars Tonight
Get on your feet if it feels good, if it feels right, cause we're all stars tonight.
This is just a really happy lively song and it makes me feel happy. I don't know why but yes, Lady Antebellum are awesome too.
#4 Taylor Swift - Change
They might be bigger, but we're faster and never scared.
and and and These walls that they put up to hold us back fell down.
it's such a powerful song and I love the whole meaning of it, because things can change.
THAT WAS SO HARD. THESE AREN'T EVEN MY FAVOURITE SONGS. THERE'S NO MARIANAS TRENCH OR ELI YOUNG BAND OR HOT CHELLE RAE OR BIRDY OR BIFFY CLYRO OR FLORENCE AND THE MACHINE OR ... i could go on for a while but yeah, anyway, bye!
and if I haven't tagged you, feel free to do it anyway! <3
Just testing my new lens the Samyang 35mm F/1.4. This was shot at f/1.4.
DOF is very narrow at f/1.4.
Love the bokeh this lens produces, its so smooth!!
About the ArnoShutter
This is the prototype of my DIY shutter system to take strobed macrophoto’s in combination with my ArnoSync controller. The shutter concept is very simple : a single solenoid winded on a suitable ferro kernel and embedded in a resin with the size and shape of a sugar cube. A light weight armature cut out of a piece of 0.25 mm (250 micron) thick polycarbonate and a suitable Neodymium (NdFeB) magnet forms the heart of the shutter. My previous DIY shutter anno 2010, was built around a voicecoil of an old 3.5 inch harddisk. Both shutter systems have about the same response times but this version is much more lighter and simpler to build. Finding (enough) suitable harddisk servo systems to experiment is not always easy. A typical shutterlag of 5 msec to full open, and another 5 msec to be fully closed can be achieved. The shutter armature is cut from a piece of polycarbonate or equivalent material. I did also tests with several other materials such as 0.10 mm thick aluminum striped from a beercan or plastic material used in the food-package industry. Also some blister package material from electronic devices are usable, but then some parts must be painted in black to make it opaque. Until now the shutter system in the field uses black 0.25 mm (250 micron) polycarbonate material from Sabic- Lexan FR25A. It has shown the best overall specs in terms of weight, strength and durability. Building a double armature version with a single coil or a double coil version with a single armature are possible alternatives to be investigated. This may help to shorten the shutter lag and close times which is a must for this kind of macrophotography. This is of course an ideal job for the coming winter. This DIY shutter system keeps me busy as a retired engineer and the experiments brings my a lot of fun. Unfortunatly my big hands and dito fingers are sometimes a big handycap to work with this very smal parts. In the good old day’s (seventies) when dinausurus where speeking, I developed a simular application for an electronic jacquard card cutting machine, so it nice to play with permanent magnets again.
Specifications of Prototype - status november 2012
Shuttertime to fully Open : 5 msec
Shuttertime to fully Close : 5 msec
Shutter aperture Opening : 16 mm for Nikon D50 - 18 mm for Olympus XZ-1 camera
Shutter housing : 80 / 70 mm Waterpipe cover in PVC or a suitable 52 mm or 58 mm lenscap
Solenoid dimensions : 20 mm X 15 mm X 10 mm
Dimensions FE Core : 20 mm X 7 mm X 2 mm
Shutter blade material : Sabic FR25A Polycarbonate Lexan foil with a thickness of 0.25 mm
Permanent magnet : Neodymium (NdFeB) blokmagneet 7 mm X 6 mm X 1.2 mm
Coil resistance (350 windings of 0.3 mm copperwire) : ca. 4 ohm
Operation voltage (via 5 Volt DC/DC converter) : 24 tot 30 volt DC op 1000 uF
Driver : IRF540N Hexfet
Number of shutter operations with one 4 X AA batterij set : > 2000 operations
Exspected shutter lifetime : > 20.000 operations
Produced operation noise : moderate – sounds like typing a character on a keyboard
Total weight : 40 gram
Total component cost : ca. 8 Euro (10 dollar)
See also : arnoshutter.blogspot.be/ (only in dutch)
My other equipment : www.flickr.com/photos/arnoldus1942/sets/72157622920371551/
Canon EF 28mm f/2.8 IS USM with Vello LHC-EW65B lens hood. I bought the Vello lens hood because it was $35 cheaper than the Canon lens hood.
It fits well, but it does not lock into place as it is supposed to. Nonetheless, the hood won't loosen and fall off.
The point of this photo was to show how difficult removing the lens cap can be with the lens hood on. There would be difficulty with the Canon hood as well. There simply isn't much room between hood and the side-pinch buttons on the lens cap. One solution is to use a center-pinch lens cap.
7Artisans 18mm F6.3 UFO II
The 7Artisans 18mm F6.3 II Lens is a tiny wide-angle lens that looks like a body cap when mounting on your camera, which makes it perfect for casual walkaround shooting and the wide-angle focal length suits street and documentary shooting applications.
The 7Artisans 18mm F6.3 II is designed for APS-C-format mirrorless cameras and provides a 27mm equivalent focal length.
Manual Lens: Fixed f/6.3 aperture and fixed focus, with a minimum focus distance of 30cm, with a simple and intuitive design.
Fully-metal Construction: The Lens is fully metal built with a compact size and weighs only 58g.
www.pergear.com/products/7artisans-18mm-f6-3-ii
fujistas.com/7artisans-18mm-f6-3-ufo-objetivo-tapa-para-f...
7Artisans 18mm F6.3 UFO II
La lente 7Artisans 18mm F6.3 II es una pequeña lente gran angular que parece una tapa del cuerpo cuando se monta en la cámara, lo que la hace perfecta para tomas informales y la distancia focal gran angular se adapta a aplicaciones de filmación callejera y documental.
El 7Artisans 18mm F6.3 II está diseñado para cámaras sin espejo de formato APS-C y proporciona una distancia focal equivalente a 27 mm.
Lente Manual: Apertura fija f/6.3 y enfoque fijo, con una distancia mÃnima de enfoque de 30cm, con un diseño sencillo e intuitivo.
Construcción totalmente metálica: La lente está construida totalmente en metal con un tamaño compacto y pesa sólo 58 g.
Whenever I am on my bike and have my camera with me, I have to try one of these shots... yeah, dangerous, silly, blah - it's fun :D And I kinda love the feeling of movement in this photo.
---
Fahrrad = bike, Freitag = friday ;)
Made a big upgrade today! I'll finally be shooting on a full frame camera. Picked up the Canon 5D Mark III with the f/4 24-105 L IS USM kit. Time to get out there!
My friend once more approached me to do some product shots for her. This time it's for the JJC Auto lens cap for the LX5. I get to keep the cap in return. :)
I have been shooting alot of reflections lately, though in this photo I was really interested in the frames of the door. The reflection was really just what the frame happened to contain.
Twin-lens reflex Rolleiflex 3.5T with metal lens cap in Eveready leather half-case with neck strap and "crocodile" clips. Matched pouches for hood and sky filter.