SU9364A1 - Device for moving frosted glass in cameras with monocle or periscope lenses - Google Patents

Device for moving frosted glass in cameras with monocle or periscope lenses

Info

Publication number
SU9364A1
SU9364A1 SU22023A SU22023A SU9364A1 SU 9364 A1 SU9364 A1 SU 9364A1 SU 22023 A SU22023 A SU 22023A SU 22023 A SU22023 A SU 22023A SU 9364 A1 SU9364 A1 SU 9364A1
Authority
SU
USSR - Soviet Union
Prior art keywords
monocle
moving
cameras
frosted glass
lenses
Prior art date
Application number
SU22023A
Other languages
Russian (ru)
Inventor
В.Л. Моисеенко
Original Assignee
В.Л. Моисеенко
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by В.Л. Моисеенко filed Critical В.Л. Моисеенко
Priority to SU22023A priority Critical patent/SU9364A1/en
Application granted granted Critical
Publication of SU9364A1 publication Critical patent/SU9364A1/en

Links

Description

За «последние годы в области художественной фотографий большое распространение получили неахроматические объективы типа „Монокль- или типа „Перископ.In recent years, non-achromatic lenses such as “Monocle or Periscope” have become very popular in the field of artistic photography.

При съемке этими объективами после наводки на фокус надо передвигать матовое вперед на некоторую величину, так назьтаемую фокусную разницу, т. е. на то рассто ние, на которое отстоит, при данном раст жении меха, оптический фокус от химического.When shooting with these lenses, after focusing on the focus, it is necessary to move the frosted forward by a certain amount, the so-called focal difference, i.e., to the distance that the optical focus is from the chemical one, at a given extension of the fur.

Измерение раст жени  меха, отыскание в таблицах или графиках соответствующей флжусной разницы и перемещение матового стекла вперед на нужное число миллиметров , отсчитыва  последние не от нул  шкалы, представл ет собою работу, котора  вызывает замедление процесса съемки.Measuring fur stretch, finding the corresponding flux difference in tables or graphs and moving the frosted glass forward to the required number of millimeters, counting the latter not from the zero scale, is the work that causes the shooting process to slow down.

В предлагавшихс  до сих лор способах, а именно: применение фиолетового светофильтра, надевавшегос  дл  наводки на фокус на солнечную бленду объектива, и применение двух объективов, из которых перв|1Й служил дл  наводки на фокус, а второй дл  съемки, при чем фокусное рассто ние последнего должно быть на два процента больше первого,- имелись те недостатки, что в первом случае наблюдалось уменьшение  ркости изображени , затрудн вц 1ее наводку на фокус, а во втором-пользование двум  объективами удорожало стоимость фото-аппарата.In the methods proposed so far, namely, the use of a violet light filter, worn for focusing on the solar lens hood, and the use of two lenses, of which the first | 1Y served to focus on the focus, and the second for shooting, and the focal length the latter should be two percent more than the first one - there were those disadvantages that in the first case there was a decrease in the image brightness, it was difficult to focus on focus, and in the second case the use of two lenses increased the cost of the photo apparatus.

Предлагаемым приспособлением имеетс  в виду устранить указанные недостат си путем применени  заранее высчитанного графика фокусных разниц, вычисленных при разных раст жени х -меха, и расположенного на нижней доске камеры.The proposed fixture is meant to eliminate these drawbacks by applying a pre-calculated graph of the focal differences calculated at different extensions of the flue and located on the bottom board of the camera.

На чертеже фиг. 1 изображает вид сзади фотоаппарата с установленным указателем; фиг. 2-схематический вид сверху фотоаппарата с нанесенным на нижнюк его доску графиком.In FIG. 1 depicts the rear view of the camera with a pointer; FIG. 2-schematic top view of a camera with a graph printed on its bottom board.

Предлагаемое устройство состоит из пластинки а (фиг. 2), врезанной или наклеенной на нижнюю доску фото-камеры и подвижного указател  Ь (фиг. 1), свободно перемещающегос  по рейке с.The proposed device consists of a plate a (Fig. 2), embedded or glued onto the bottom board of a photo camera and a movable pointer b (Fig. 1), freely moving along the rail c.

На пластину о проведены две линии: одна d-наклонна  пр ма  и друга  е крива . Наклон d произволен . Крива  е строитс  следуюTwo lines are drawn on the plate o: one is d-tilted right and the other is e-curve. The slope d is arbitrary. Curve e built following

SU22023A 1927-12-24 1927-12-24 Device for moving frosted glass in cameras with monocle or periscope lenses SU9364A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU22023A SU9364A1 (en) 1927-12-24 1927-12-24 Device for moving frosted glass in cameras with monocle or periscope lenses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU22023A SU9364A1 (en) 1927-12-24 1927-12-24 Device for moving frosted glass in cameras with monocle or periscope lenses

Publications (1)

Publication Number Publication Date
SU9364A1 true SU9364A1 (en) 1929-05-31

Family

ID=48331546

Family Applications (1)

Application Number Title Priority Date Filing Date
SU22023A SU9364A1 (en) 1927-12-24 1927-12-24 Device for moving frosted glass in cameras with monocle or periscope lenses

Country Status (1)

Country Link
SU (1) SU9364A1 (en)

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