لكل سؤال جواب .. مجلة فن التصوير اللبنانية _ ع٤٤

Every question has an answer

⏺ Filming on TV, Arab lenses and galleries

Please provide me with clarifications on the following points:
1- I would like to take beautiful pictures of the TV screen, with or without flash, so what is the method?
2- What are the lenses that I need for my camera (Mamiya ZM-Q), bearing in mind that I have three 50mm lenses - 35mm and 200mm.
3- Can I know the days and dates of the photographic art exhibitions that will be held throughout the Arab world? I am ready to travel and attend them.

Muhammad Saleh bin Abdullah Aqil
Makkah Al-Mukarramah - Kingdom of Saudi Arabia -

- We have mentioned a lot about the first point, and here we confirm that it is not possible to photograph from the TV using flash, as the flash light will remove the points that make up the TV panel.

You can shoot from the TV using a tripod, at a shutter speed of 1/30 or 1/15, depending on the movie speed, and at f/8 or f/11.

2- The lenses you own are considered the standard for the equipment of any interested person. You only need a 28mm f/2.8 lens and a 50mm f/3.5 macro lens. The optional lens is a 135mm f/2.8 lens as good for portrait photography, or a 70 x 150mm f/3 zoom lens. 8 If you own this set of lenses, it is considered the standard of a professional photographer.

3- This question of yours indicates the importance of photography and its culture to you.
We add our voice to your voice, and it would be preferable if the photographic officials in the Arab world inform us in advance of their activities and exhibitions, before we
It ends and time passes.. That is, we must be informed months in advance, considering our magazine is monthly, and it is necessary to give us the necessary time for publication, and then give the photographer the necessary time to contact the exhibition management, or to prepare himself for travel⏹

⚫ Dental x-ray film and camera numbers

welcome
1- I would like to ask you how to film a small dental x-ray film with a slide film, so that I can then display it with a projector.
2- Please clarify the meaning of these numbers attached to the camera, so it says 35 mm camera, 50 mm camera, 110 mm camera, and so on.

Your loyal friend
Dr. Mowaffaq Mustafa Al-Sebaei, a dental surgeon in Medina - p. B 3791
Kingdom of Saudi Arabia

We have mentioned in the last issue a topic about making additional copies of the slide. And this subject largely coincides with what you intend to do, as you can copy the negatives or positives about dental x-ray films. without any difficulty, so please go back to Issue 43.
We have a note here, which is that dental x-ray films
It can be viewed directly, and instead of transferring it to slides, you can cut some sides so that the slide enters the cardboard or plastic holder, so if the size of the x-ray slide is 3 x 4 cm. The 35 mm film measures 3.5 x 2.5 cm

Thus it turns out that you can cut about 2 mm from each of the four sides.
But if you want to get the entire slide, you have no choice but to perform the transfer process with the slide film so that you have viewable slides.

2- These attached numbers mean the film size that the camera accommodates. A 35 mm mirrorless or non-reflective camera uses 35 mm film in proportion to its size of 3.5 cm.
120 mm cameras use 12 or 16 image roll films, and the film scale is 12 cm. The slices range from 6.6 cm. or 6 x 7 cm. Or 6 x 9 cm.

110mm camera, which uses 110mm films. The film scale ratio is 1.10 cm. It may also be said that a camera is 13 x 18 cm, which means that it accommodates a film measuring 13 x 18 cm.

As for a 50mm camera, as you mentioned in your question, this is out of the question, as there is no camera under this category. Rather, there is a 50 mm lens, not a 50 mm camera ⏹

⏺ The friend Isaac Hassan is a reader
Riyadh, Saudi Arabia

The prices of photographic equipment and the like are very high in Beirut due to the constant movement of foreign currency exchange, and this limits the possibility of obtaining any price. And shipping it to Riyadh, in addition to other expenses, is much more expensive than its price in the Kingdom ⏹

⏺ Old camera but the best

side of the technical department.
I bought a German-made blower camera, Super Ikonta. It accommodates 120 mm film and produces a negative of 6 x 9 cm.
It has several shutter speeds:
( B - 1-2-5-10-25-100- 250- 500 )
As for lens products, they are
(3.5-4-5,6-8-11-16-22-32)
Its fixed lens is f/105mm.
At 3.5 site made by (Zeiss Ikon) and a generalization of interest - for me and the rest of the readers - please provide me with a date
The manufacture of this camera and the extent of its ability in the works
Well done, especially with the transparent images
Slides, and are appropriate optical filters available now. Where are these accessories located? Note that the initial experiments gave me good results. It is noticeable that it requires a lot of patience and precision, unlike reflex cameras.

Your brother Fathi Al-Aribi
Benghazi, P.O. Box 486, Libya

The Super Iconta cameras are considered one of the best 120 mm roll cameras, due to the accuracy of the German industry that they adopted, in addition to the best types of glass used with Zeiss Icon lenses. The history of manufacturing this camera dates back to the beginning of 1940 and it is the first in the world of this structure and is considered good for all uses. Especially landscapes
F - Portraits, whose images are characterized by accuracy and ultimate vision due to the possibility of adjusting the focus at three meters, and it is possible to shoot indefinitely. Which gives accuracy in clarity of vision and details.

Any films can be used with it. Colored, sliced, or black and white.
Filters are available, of course, but you will only get them from West German markets. Due to the size of this camera and its mechanics, the user has to be patient and experienced to reach high results.
In short, the camera is good and you have to maintain it⏹

⏺ Advice.. and filming on TV

1- Which is better, the Praktika camera or the Zenith 13 camera, and what do you advise me?
2- Why do some ripples appear on the image taken from the TV?
With my thanks and appreciation

Muhammad Nidal Al-Adhaimi
Homs - Syria

1- There is no significant difference between these two types of cameras, and you can choose the (Prakticka), knowing that there are no significant advantages. But the quality of the lenses in the first is good.
2- When filming on television, you should use a shutter aperture of 1/30 or 1/15, and here the ripples will be removed.

⏺ Using converters with facial images

Is it possible to use teleconverters with facial images, what is the necessary technology and the most important names of the converters.

Anwar Diab
Kuwait

The term teleconverter sounds like it somehow refers to working with long telephoto lenses primarily. And although some have been known to put a 2 (x) or 3 (x) long-range adapter between a 400mm lens and a camera to get 800mm and 1200mm optics.
Supernatural, logic tells us that there must be other uses for long-range converters, and among these uses is photographing faces, but with care to adopt an aperture. F. Small f / 16 or f / 22 to avoid inconsistency in the sharpness of protrusion and also to bypass the decrease in color contrast that is usually caused by the converter, and this enables you to use a 50mm or 85mm lens.

If you use a 1.5 (x) adapter, your 50mm lens will be the same as a 75mm lens. And a lens of 85 mm = 127.5 mm. These focal lengths are still good for portrait photography.

But if you use 25 (x), then it becomes a 50 mm lens = 100 mm, and an 85 mm lens = 170 mm. Here, too, it is okay for portrait photos.
As for the types of converters, they are many, including (Spiratone), (Kiron), and (Soligor).
(Tamron)
In addition to many companies that manufacture adapters, you can also check with the customer of the company producing your cameras or lenses regarding the possibilities of providing such devices ⏹