View allAll Photos Tagged Computar
Toyo Omega View 45F Large Format 4"x5" monorail view camera
Computar Symmetrigon f6.3 150mm lens in Copal #1 shutter
exposed at f45 for 1/250 with Hoya 1B filter
Instax Wide 800 ISO film by Fuji (10.6x8.4cm) in 4x5 holder
"scanned" with Nikon D5100 DSLR and macro 35mm f2 lens
Torturing 800iso film like this should be illegal, but its not... instax begins color inversion into green then blue at +3 EV over exposure and turns fully black by +4 EV
cctv or 16mm film lens. i had to grind off a bunch of metal from the lens base and adapter to get it to focus to 5 or 6 feet, which's enough at f8 or higher to do the hyperfocal thing. (the back of the lens does not go close enough to the sensor to focus to infinity.)
but it works well for closeups. totally worth it for a $25 lens.
Photo shows Panasonic G1 prepared for my C mount experiments. A piece of insulating tape isolates the electrical contacts in the camera throat. The piece of card with a 1" diameter hole serves as a light shroud. I simply place the rear of the C mount lens through the hole in the card and hold it in place in the camera throat after adjusting the focus and iris setting. I find best results are achieved with something like f11 to get a good depth of field as it is very difficult to get perfect focus and registration. The two smaller lenses are a Computar 12.5mm f1.3 and a Cosmicar Pentax 12.5mm f1.4, both designed primarily for cctv use.
copper wort chiller dipped in boiling kettle of english stout, mash tun drying in background
For HD video of mash tun wort extraction see: [youtu.be/8e-javs6IYs]
Toyo Omega View 45F Large Format 4"x5" monorail view camera
Computar Symmetrigon f6.3 150mm lens in Copal #1 shutter
exposed at f22 for 1/250
Instax Wide 800 ISO film by Fuji held in Polaroid 545 back (10.6x8.4cm)
"scanned" with Nikon D5100 DSLR and macro 35mm f2 lens
Selective focus by tilting front standard forward and raising rear standard
Toyo Omega View 45F Large Format 4"x5" monorail view camera
Computar Symmetrigon f6.3 150mm lens in Copal #1 shutter
Nikon SB-20 flash fill on PC sync
exposed at f16 for 1/60 with Hoya 1B filter
Instax Wide 800 ISO film by Fuji (10.6x8.4cm) in 4x5 holder
"scanned" with Nikon D5100 DSLR and macro 35mm f2 lens
Selective focus by swinging front standard, zebra from hand-rolling Instax
Toyo Omega View 45F Large Format 4"x5" monorail view camera
Computar Symmetrigon f6.3 150mm lens in Copal #1 shutter
exposed at f6.3 using cable release and Nikon SB-20 flash
Instax Wide 800 ISO film by Fuji held in Polaroid 545 back (10.6x8.4cm)
"scanned" with Nikon D5100 DSLR and macro 35mm f2 lens
Got my hands on an old 4x5 peel-apart back and converted it to hold Instax. The roller pressure was too high and left streaks.
Selective focus by tilting front standard forward and raising rear standard
Stealing a shot for Friday! Have a great day, folks! Cheers!
Computar 12.5mm f/1.3 on GF-1
[ 0.125 sec (1/8) | f/5.6 | FLength 12.5 mm | ISO 400 | Manual exposure ]
Stenurella melanura, Cerambycidae female
Size: 8 mm
85 natural light exposures stacked in Zerene Stacker.
The other day I brought a lens with me that I bought cheap on eBay a few months back and almost had forgotten about: Computar 55mm f2.8 Telecentric.
It's a C-mount lens designed for close-up work and specifically designed to be telecentric. Basically this means that an object is rendered at the same magnification regardless of it's distance from the lens. If you like you can read more about telecentricity here: en.wikipedia.org/wiki/Telecentric_lens
And more about this specific lens is available here: computarganz.com/product_view.cfm?product_id=561
Telecentricity can seem pretty strange but can be useful in some applications. For one thing it does have some nice implications for focus stacking. Since the magnification does not increase when the subject comes closer to the lens it means that out of focus objects in the foreground does not obstruct the view as much as otherwise. It also means it's easier to predict what will be in the frame since the framing is esentially the same throughout the stack. A problem otherwise is that the framing may seem perfect at the beginning of the stack, but as you approach the end and has come closer to the subject resulting in higher magnification it turns out you're cutting off some crucial detail (typically a leg or an antennae). This you don't have to worry about with a telecentric lens.
This lens certainly has its flaws but I found it surprisingly good and the telecentricity is quite nice in many ways. Some more info below.
View larger!
Toyo Omega View 45F Large Format 4"x5" monorail view camera
Computar Symmetrigon f6.3 150mm lens in Copal #1 shutter
exposed at f8 for 1/250 with Hoya 1B filter
Instax Wide 800 ISO film by Fuji (10.6x8.4cm) in 4x5 holder
"scanned" with Nikon D5100 DSLR and macro 35mm f2 lens
Toyo Omega View 45F Large Format 4"x5" monorail view camera
Computar Symmetrigon f6.3 150mm lens in Copal #1 shutter
exposed at f22 for 1/30
Instax Wide 800 ISO film by Fuji held in Polaroid 545 back (10.6x8.4cm)
"scanned" with Nikon D5100 DSLR and macro 35mm f2 lens
Selective focus by tilting front standard forward and raising rear standard
This is Tawn, my friend Lew's fiance. In 1979 it was a few days before their wedding when this portrait was made. I really likeTawn's expression and the overall comp. After the wedding I sent them a framed print, which I think they hung in the bathroom. 4x5 Omega 45E, 210mm Computar Symmetrigon, Tri-X @200 developed in HC110 and printed on Ilfobrom 2 and Selenium toned. Scanned from the print.
Permission graciously granted to camera-wiki.org on March 5, 2015 by eBay seller Kenward Griffith to use these images in the article Camerz.
All rights reserved.
From Ken's description:
"The Camerz ZII is a single lens reflex, long roll film camera, using 100 foot rolls of 70mm film. Before digital, it was the school photographers choice, getting about 650 to 700 images per roll. The negative is about the same as the 645 format (6mm x 4.5mm or 2 1/4" x 1 5/8"). It is fully electric (120 volt) - motor drive - film advance and shutter. I used this camera for schools and proms. It is a workhorse! Camera with case and cords weights 31 pounds. This camera comes as a COMPLETE SET including padded case, film back, two shutter release cords (one never used), sync cord, power cord, film back connection cord, a 0.5 diopter (needed to do close up head and shoulders portraits), lens hood, and lens cap. The camera comes with a Computar-Camerz, 1:4.5, 75-150mm zoom lens (made in Japan). I used this camera personally and I just now plugged it in and it seems to work great. New, this camera cost me around $5,000.00.
Inquires welcome.
Reason for selling: I am a 64 year old retired professional photographer. I have been in photography since I was 20 and full-time in my portrait studio for the last twenty-seven years.
One thing I forgot to mention is the camera's ID system. A "camera card" can be inserted into a slot on top of the camera with information (such as name, grade, teacher, etc.) and that information is recorded at the bottom of the negative. The camera actually takes a photo the the information on the card for each exposure."
The lens in this kit strongly resembles the Mamiya M645 system 75–150mm zoom, but with an added lever for better access to the zoom control.
Permission graciously granted to camera-wiki.org on March 5, 2015 by eBay seller Kenward Griffith to use these images in the article Camerz.
All rights reserved.
From Ken's description:
"The Camerz ZII is a single lens reflex, long roll film camera, using 100 foot rolls of 70mm film. Before digital, it was the school photographers choice, getting about 650 to 700 images per roll. The negative is about the same as the 645 format (6mm x 4.5mm or 2 1/4" x 1 5/8"). It is fully electric (120 volt) - motor drive - film advance and shutter. I used this camera for schools and proms. It is a workhorse! Camera with case and cords weights 31 pounds. This camera comes as a COMPLETE SET including padded case, film back, two shutter release cords (one never used), sync cord, power cord, film back connection cord, a 0.5 diopter (needed to do close up head and shoulders portraits), lens hood, and lens cap. The camera comes with a Computar-Camerz, 1:4.5, 75-150mm zoom lens (made in Japan). I used this camera personally and I just now plugged it in and it seems to work great. New, this camera cost me around $5,000.00.
Inquires welcome.
Reason for selling: I am a 64 year old retired professional photographer. I have been in photography since I was 20 and full-time in my portrait studio for the last twenty-seven years.
One thing I forgot to mention is the camera's ID system. A "camera card" can be inserted into a slot on top of the camera with information (such as name, grade, teacher, etc.) and that information is recorded at the bottom of the negative. The camera actually takes a photo the the information on the card for each exposure."
The lens in this kit strongly resembles the Mamiya M645 system 75–150mm zoom, but with an added lever for better access to the zoom control.
..., it's what we have so little off!
Computar 12.5mm f/1.3 tilted by handon GF-1
[ 0.033 sec (1/30) | f/5.6 | FLength 12.5 mm | ISO 400 | Manual exposure ]
One of the results of my trip to the seaside with Norma. Playing with front swing to pull the flower heads and dry twig into focus, I realised it is possible to have a ludicrously shallow depth of field. What looks like a field behind is in fact the Bristol Channel.
That together with the stray light that got in during the exposure process show that I clearly have much to learn about this large format lark.
Contact print from 5x7 negative. Fotospeed VC RC paper, Ilford multigrade developer.
Sinar Norma, Computar Symmetrigon 210 f/6.3, Ilford FP4+, Rodinal (1+25)
Despite it not being in an exceptionally good state, this lens is a true gem in my eyes. Not only is it very small (with a diameter of ~40 mm) and lightweight, but also extremely well corrected for CA, incredibly accurate in it's color-reproduction (at least in my perception) as well as exceptionally sharp among it's (limited) aperture range.
To me it feels like one of the top-of-the-line vintage lenses from german manufacturers (and that's pretty great in my book...).
Shot with a "Computar-DL 50 mm F 2.8" enlarging lens on a Canon EOS R5.
Toyo Omega View 45F Large Format 4"x5" monorail view camera
Computar Symmetrigon f6.3 150mm lens in Copal #1 shutter
exposed at f6.3 for 1/60 with Hoya 1B filter
Instax Wide 800 ISO film by Fuji (10.6x8.4cm) in 4x5 holder
"scanned" with Nikon D5100 DSLR and macro 35mm f2 lens
Selective focus by tilting front standard
Since I own a scanner now.
Main computer is an overclocked Celeron. It is displaying MRTG which is graphing each computer in the house's bandwidth utilization. Note the CueCat, with which I was able to date this photo to Sept 2000 via a dated webcam image with the CueCat.
Ed's Cisco switch is visible on the right.
Permission graciously granted to camera-wiki.org on March 5, 2015 by eBay seller Kenward Griffith to use these images in the article Camerz.
All rights reserved.
From Ken's description:
"The Camerz ZII is a single lens reflex, long roll film camera, using 100 foot rolls of 70mm film. Before digital, it was the school photographers choice, getting about 650 to 700 images per roll. The negative is about the same as the 645 format (6mm x 4.5mm or 2 1/4" x 1 5/8"). It is fully electric (120 volt) - motor drive - film advance and shutter. I used this camera for schools and proms. It is a workhorse! Camera with case and cords weights 31 pounds. This camera comes as a COMPLETE SET including padded case, film back, two shutter release cords (one never used), sync cord, power cord, film back connection cord, a 0.5 diopter (needed to do close up head and shoulders portraits), lens hood, and lens cap. The camera comes with a Computar-Camerz, 1:4.5, 75-150mm zoom lens (made in Japan). I used this camera personally and I just now plugged it in and it seems to work great. New, this camera cost me around $5,000.00.
Inquires welcome.
Reason for selling: I am a 64 year old retired professional photographer. I have been in photography since I was 20 and full-time in my portrait studio for the last twenty-seven years.
One thing I forgot to mention is the camera's ID system. A "camera card" can be inserted into a slot on top of the camera with information (such as name, grade, teacher, etc.) and that information is recorded at the bottom of the negative. The camera actually takes a photo the the information on the card for each exposure."
Permission graciously granted to camera-wiki.org on March 5, 2015 by eBay seller Kenward Griffith to use these images in the article Camerz.
All rights reserved.
From Ken's description:
"The Camerz ZII is a single lens reflex, long roll film camera, using 100 foot rolls of 70mm film. Before digital, it was the school photographers choice, getting about 650 to 700 images per roll. The negative is about the same as the 645 format (6mm x 4.5mm or 2 1/4" x 1 5/8"). It is fully electric (120 volt) - motor drive - film advance and shutter. I used this camera for schools and proms. It is a workhorse! Camera with case and cords weights 31 pounds. This camera comes as a COMPLETE SET including padded case, film back, two shutter release cords (one never used), sync cord, power cord, film back connection cord, a 0.5 diopter (needed to do close up head and shoulders portraits), lens hood, and lens cap. The camera comes with a Computar-Camerz, 1:4.5, 75-150mm zoom lens (made in Japan). I used this camera personally and I just now plugged it in and it seems to work great. New, this camera cost me around $5,000.00.
Inquires welcome.
Reason for selling: I am a 64 year old retired professional photographer. I have been in photography since I was 20 and full-time in my portrait studio for the last twenty-seven years.
One thing I forgot to mention is the camera's ID system. A "camera card" can be inserted into a slot on top of the camera with information (such as name, grade, teacher, etc.) and that information is recorded at the bottom of the negative. The camera actually takes a photo the the information on the card for each exposure."
The lens in this kit strongly resembles the Mamiya M645 system 75–150mm zoom, but with an added lever for better access to the zoom control.