An excellent opportunity to collect high quality photographic prints and support this website. Sharpening Sharpening increases image contrast at boundaries. This enhances perceived sharpness and detail, although it doesn’t increase actual information content. Sharpening can be overdone: But the right amount definitely enhances an image. Although sharpening can be performed during the scan or in the digital camera, it is usually best done late in the image editing process. A simple sharpening algorithm subtracts a fraction of two neighboring pixels from each pixel, as illustrated on the right. The thin black curve is the input to the sharpening algorithm:
I have said, in the past, that you should move toward full frame sensors. I have always championed full frame sensors. At the end of the day, full frame sensors beat APS sized and smaller sensors. The whole reason I bought an original x was because it had the largest sensor I could find in a small camera. It had been a number of years since I had shot an APS crop frame sensor.
I replaced that with a Nikon D3 full frame and then moved on to the Canon 5d2, also full frame.
NOTABLE EVENTS OF THE PAST. 10 May Company Seven delivered another interesting optical system for NASA to fly later in This is a ruggedized and shock/vibration resistant catadioptric system with all optical components made fully quartz (fused silica), and with superbly engineered and applied high transmission coatings optimized for its designed transmission application.
The lens was one of the latest additions to the system discontinued just after the Millennium. Soon after its release the news spread that this lens is something special – user comments and reviews suggested that it was the best mass production ultra-wide lens ever produced. Due to the rather mediocre alternatives in the EOS land some Canon users were even desperate enough to use it via adapters on their EOS cameras At the peak of this crazy hype it was almost more an investment rather than a purchase.
In addition, the ZF-line remains available, but is now marketed for industrial applications only. According to Zeiss it has been modernized with respect to flare and environment-friendly glass and the optical design has also been altered slightly. According to the Zeiss naming convention “Distagon” refers to a “retro-focus” lens based on an asymmetrical design. The asymmetry is necessary to provide the required space for a SLR mirror. The design evolved over time, of course, and it’s no longer just used by Zeiss but across the whole industry.
History of photographic lens design
Officers, observers, scouts, liaison officers, enemy snipers, gun crews, trench mortars and machine guns, anti-tank rifleman and motorcycle skirmishers are to be his primary targets. He is capable of independent action under the most difficult conditions of battle. It clearly shows the importance the Red Army gave to the sniper in its ranks. The Soviet Union more so than any other combatant in W. II, used the sniper in the greatest numbers and capacities.
“The principal task of the sniper is the destruction of the most important enemy targets he can find.
Introduction Carl-Zeiss is one of the legendary brands in the business thanks to a history dating back to the very beginnings of the optical industry. Regarding the number the key designs it can almost be described as its cradle established in Zeiss remained active and successful in other optical markets inc. These classic lenses are designed in Germany but made by Cosina in Japan under Zeiss quality control. The original symmetrical Planar design was invented in !
In fact it is the most successful and most copied design in the business. The lens is available for EOS as well but we used the Nikon version via adapter. The focus confirmation in the viewfinder remains active though and you can naturally use Live-View for focus fine-tuning. The build quality of the full-metal Zeiss brass with chromium-plated brass front bayonet just screams quality.
The Memar and Silette focus by estimation. The Super Silette has rangefinder focusing. This is the original and simplest model apparently produced from until the early s. Sears advertised the Memar as “simplicity and quality at a low cost. It has an Agfa Apotar 45mm f3. Apertures go to f
The 39mm screw mount — also called Leica Thread Mount (LTM), Leica Screw Mount (LSM), or M39 — was introduced by Leica with the model I (C), and used on all the Leica models until the bayonet mount mount was adopted on many Leica copies and other 35mm rangefinder cameras.
It is produced and hosted as another way of expressing gratitude to those who have helped Company Seven prosper. With some of this content dating back to the times when slow dial-up Internet access was the norm, the article was originally text heavy because illustrations were by necessity kept simple and to a minimum. Over the decades we have, and will continue to, on occasion add this or that mention of or illustration of items in our archives and museum collection, this to break up the monotony of text, make corrections with much gratitude to Dr.
It was never our intent to write one comprehensive and all-encompassing history of Zeiss, that would require volumes to do it justice, but rather to explain why we at Company Seven remain grateful for and in awe of the achievements by Zeiss. From its inception through to the middle 19th century, lens making was a craft that was essentially passed on from generation to generation. Innovations had typically resulted from trial and error experimentation; this was a costly and time consuming process that could not factor in all of the possible variables in lens making materials and design.
The Weasel is a man with all canine teeth. He appears as an enemy of Damian Wayne in the future. Now, she is stalking and killing Bruce Wayne’s former mistresses. Batman and Robin 2 September Big Top is a morbidly obese bearded man in a tutu.
Notes: The site still exists, but many of the pages seem to be no longer maintained and available and I have not been able to reach the original site developer, Robert Monaghan, who collected and edited the following information from use net postings.
Note the cost of the objectives compared to the stand, the higher powers approaching the cost of the stand and box combined showing the difficulty in manufacture at the time. A very gentle buffing with a soft dry cloth has brought back a generally excellent lemon-gold finish with ‘spotting’ consummate with age. The Stand, click on the outer two images for larger versions.
The plain-concave mirror is attached to a long arm giving free movement beneath the substage which in turn slides up and down on a substantial brass rod with a friction clamp allowing vertical movement to provide a reasonable focus on the subject when the concave side of the mirror is in use. Although the scheme is simple it works quite well since the position of the finger controls and fingers resting at the edge of the slide allow fairly smooth movements after a bit of practice.
A sliding piece [G] with spring attachment [missing from my microscope] was used to stop unnecessary movement of the slide whilst being positioned with the fingers and also prevented the slide toppling when the microscope was used horizontally when the camera Lucida was in use. At the other top side of the stage a small socket [Y] allowing the use of the stage forceps, cleverly designed to move with the movement of the ‘Y’ stage controls.
Carpenter in his 2nd Edition book ‘The Microscope And Its Revelations’ suggests that the higher priced stage with ‘X’ ‘Y’ stage controls made the available space on the stage rather cluttered and he preferred the simpler system fitted to mine [and his]. Artifacts from such a small aperture are very clear
Uploading of these items now ongoing. Several new items recently listed on our sister website at www. More militaria now to be uploaded onto our sister website Bridgehead Militaria so please take a look: Updating Saturday 20th October. Always looking to buy quality militaria , single items or whole collections. Regards , Chris S.
Only the top camera is a real Leica. The other easy way to tell if a Leica is real or not is to look at the top plate. There are often two very glaring differences between fake and .
More Versatile Largest zoom range A hunt is unpredictable — one of the reasons for its appeal. The large zoom range of 1. Furthermore, the optics feature unparalleled speed. The large exit pupils and extremely large fields of view ensure fast target acquisition and an excellent overview of the hunting situation. The large exit pupils enable fully relaxed viewing: The new centre tube featuring a diameter of 36 mm enables a compact design, as well as a lot of room for optical excellence.
It is also more compact than comparable systems on the market, and therefore stands out with its maximum ease of use. It is an optical masterpiece and a totally new experience in design for uncompromising users who want top performance every time.
British Society of Cinematographers — Professional organization Broncolor Manufacturer of the best quality lighting tools for professional image makers for over 50 years. Brother International Corporation http: The AiRScouter is an innovative viewfinder solution that puts an HD display where it’s most convenient: With over 30, products in 4 locations, and a team of highly knowledgeable sales representatives, you can rely on Bulbtronics to identify and deliver exactly what you need with a service level that exceeds expectations.
Argus | Canon | Chinon | Edixa | Exakta | Kodak | Konica | Mamiya | Minolta | Miranda | Nikon | Olympus | Pentacon | Pentax | Petri | Praktica | Ricoh | Topcon | Vivitar | Yashica | Zeiss: Canon: Canon Canonflex () (Large Image) This is the original Canonflex model introduced in at the same show the Nikon F and Minolta SR-2 were introduced in the United had no meter but had.
Developing My first bit of advice is to figure out whether or not you want to buy and use these cameras, or simply display them on a shelf. The number of people shooting film has significantly decreased in the last 15 or so years, but there is still enough of a loyal following that it is still possible to get film cheaply. If you have no interest in actually using old cameras, then by all means go hog wild and just buy anything you think looks cool.
However, if you want to shoot film, you need to be a little more discriminate. Types of Film and What to Avoid Not including instant film formats like Polaroid and a couple very obscure formats that are hard to find and extremely expensive, there are two primary formats of film that are still readily available. An example of roll film and format 35mm film, which are the two most common types of film still available today. It was released by Kodak in and has been used in millions of cameras sold all over the world.
When it was released, it was revolutionary because it gave photographers a foolproof way to easily load film into cameras in daylight, and the film remained protected in a felt lined cassette after it was exposed. You can usually find format film locally at places like Walmart and some drug stores. Originally introduced by Kodak in for use in their No. I shot this image on Kodachrome II film that expired in
A Guide To Russian LTM Lenses
The discipline applies to all animal eyes, whether human or not, since the practice and procedures are quite similar with respect to disease processes, while differences in anatomy or disease prevalence, whether subtle or substantial, may differentiate the two. It was believed, by Alcamaeon 5th century BC and others, that this fluid was the medium of vision and flowed from the eye to the brain by a tube.
Aristotle advanced such ideas with empiricism.
I’ve owned a Contax G2 since they were first produced, and I’ve loved the camera and its lenses. I spent months comparing Contax and Leica before I bought, and despite a life-long lust for a Leica, I decided any lens or functional superiority the Leica might have would be minimal, and chose the Contax with three lenses (I passed on the superwide and the zoom).
The Memar and Silette focus by estimation. The Super Silette has rangefinder focusing. This is the original and simplest model apparently produced from until the early s. Sears advertised the Memar as “simplicity and quality at a low cost. It has an Agfa Apotar 45mm f3. Apertures go to f Focus is set by rotating the focus ring in front with focus from 3 feet to infinity.
It is not a rangefinder – focus distance is set by estimation.
Are Your Lenses Really “Hot”?!! Industar 61 lens lanthanum glass Lens Faults Pages Photo. Net on Radioactive Lenses gamma levels..
Mark Baigent July 28, at AM. Hi David > But as the FF sensor surface area is ~2x bigger, and technology advances apply to all sensor sizes This is true but there are more variables than just size, ie the use of an AA filter that deliberately softened the image on my old 5D
Glasses designed for cycling usually cover more of your face than fashion eyewear for better protection, and use tougher lenses. Many manufacturers offer interchangeable lenses so you can tailor the glasses for the conditions. Photochromic lenses automatically darken in bright sunlight so you can use the same glasses in a range of conditions. Most top eyewear makers offer them; ask your optometrist. Why wear cycling sunglasses?
What should you look for in a pair of cycling sunglasses? The frames are usually thinner and they’re made from lightweight and durable materials, and the lenses are lighter too, typically shatterproof and they come in a vast rainbow of tints to suit different lighting conditions. Fit Fit is the a key criteria when choosing a new pair of cycling sunglasses. Some manufacturers offer sunglasses in a narrow design or a women-specific fit, but the vast majority of sunglasses are unisex with a one-size-fits-all design.
For that reason, it’s always a good idea to try some on before you buy and choose the glasses with the best fit.