Collection Highlight:

Tessar, the most successful lens design ever

Created in 1902, Tessar is certainly the lens design most produced ever in film photography. It was a fundamental step in making sharpness and quality accessible to amateur photography. It equipped millions of point & shoot cameras and it was also a respected large format and reproduction lens. Still very usable, available and affordable today. read more


What can I do with that lens?

Sometimes we ask ourselves things like: from which distance a certain subject would fill the frame of a certain format with a given lens. If in large format photography: What is the bellows extension to get it in focus? What is the exposure compensation? If you ever had that kind of question, and had to go over formulas or guessing games, you have to check out this online simulator. read more… 


Lens front raise online simulator

In some cases, it might be interesting in architecture and urban photography, to keep buildings’ vertical lines parallel in the picture as they are in reality. Well, you know, you can give a lens front raise for that. But will your lens/format have room enough for that? How much can you raise it? Where will the horizon line end up? Check out this online simulator. read more…


First time here?

This is a new website with educational content about photography and intended to the amateur enthusiast. Photography is seen through three angles: technique, aesthetics and history, while history is presented through a Collection of antique cameras, equipments, advertising and literature. Technique is a sharing area with posts and discussion of digital, film and hybrid photography. Aesthetics is where we talk about our relation to images on its production and reception modes – we may say that it is photography in relation to our culture.

The content is wide, as wide is the internet and the multitude of people who navigate on it. The idea is not about building up an encyclopaedia, an ocean, but rather a fountain of clear waters, modest but always ongoing, and able to irrigate the knowledge and creativity of those who come and enjoy it.

Do not hesitate in contributing with discussion, content and your own experiences. Use the comments in posts or get in touch. It is also possible to register and follow up new content as it is uploaded. I hope you will like it. Thank you for your visit.

Regards,

Wagner Lungov

June 27th, 2016


Finding the focal length of a lens

  This is a calculator that will help you in finding the focal length of a photographic lens. The method is about focusing on one or more objects at different distances. Each time, you write down 3 measurements: Object size Image size How much did you advance the lens from infinity position in...

Pinhole, where truth, beauty and goodness...

Pinhole is a photographic technique that employs most of the times a home made camera in different degrees of improvisation and roughness. Matchboxes, shoeboxes and whatever boxes and containers are sort of starting point for those projects. The photographer bricoleur may also start from scratch by...

Front raise and horizon line

For a given lens and given film or sensor format, this simulator shows how much it is possible a front raise and where the horizon line will end up in the final picture. Focusing is assumed to be at, or closer to infinity, a normal landscape condition. Observations: 1 – The scheme is...

Refraction, Dispersion and Optical Glass for...

Refraction Refraction is a phenomenon of waves changing direction when passing from one medium to another. In a photographic lens that is the case when passing from air to glass and again from glass to air. It occurs also when passing from one type of glass to a different one. They are not all the...

Lens/subject/format – an online...

How it works: You enter the focal length of your lens, film or digital sensor dimensions and the approximate size of your subject. The simulator shows in value and graphically the following corresponding information: the distance you must place your lens from the subject the image circle and angle...

Ground glass loupe, easy and useful

Quite often we want to check focus more carefully in a view camera . To do that, the obvious idea, goes about using something that enlarges the projected image allowing for more precision than with bare eyes to inspect image’s sharpness. Three problems generally arise when using common loupes...

Immateriality of digital image

It is a fact that the digital image has a state in which it is pure information. That is the case when it is written as a file, as sequence of bits. But once printed in paper, it is no less physical or material than the traditional analog photography. Similarities are not only in this final output...

Focal length and image circle

(image source: wikimedia commmons) You certainly saw already a diagram more or less like this one. It is a standard way to explain what focal length is. This is how camera makers talk about focal length and they have a good reason for that: they want you to learn what focal length means in the...

Popular portrait, at peace with fantasy

It allows plenty of good insights the exhibition, Retrato Popular, do vernáculo ao espetáculo, (Popular Portrait, from vernacular to spectacle) on show at SESC Belenzinho – São Paulo, since May 6 and ending July 31, 2016. First by providing an encounter of popular art, that is made for...