لكل سؤال جواب .. اسئلة منوعة ومتفرقة .. مجلة فن التصوير اللبنانية _ ع٣١

Each question has a variety of different answers

1- What are the advantages of working on (X) and (M) sockets, noting that the (X) socket is for flash photography. However, I did not get a good result, so what is the reason? Camera type - Mama.
2- Why is (A) position used in a (Canon T-50) camera, and is it necessary for shooting in the sun?
3- What is the difference between Canon T-50 and Mamiya and which one is better for good photos?
4- If it is possible, tell me about the best camera for photographing faces, spaces and scenes, on the basis that it is light in weight and with a 500 mm lens.
5- I saw in one of your studies that every liter of water needs 100 grams of carbonate. Is this correct?
6- Please state the order of the five solutions, with a chemical composition to show.
7- What is the majority substance in grams, and which of them has to do with heat?
8- What is the effect on the stabilizer? If the weather is cold..i.e. if the temperature is below zero.

Fouad Hassan Salem Al-Yemeni
Arar - Kingdom of Saudi Arabia

1- The camera that Mamiya spoke about has become outdated and there may be some malfunction in it.
The important thing is that the (X) quarry is used for flash photography, and the (M) quarry is used with magnesium lamps, which is an old light method, and it is not necessary to use this site at all.
2- Location (8) is used in (T50) because it is a programmed camera with priority for shutter speed, and letter (8) means (Aperture), i.e. programmed shutdown automatically. It is necessary to use this site with this camera.
3 - The Mamiya, a studio camera with a large film structure - 6 x 9 cm - and this is what gives it the advantage as the result is accurate for the quality of the images, and this type of camera with a large structure is intended for professionals.
As for the Canon (T-50), it is intended for amateurs, rather for beginners, but the first one is heavy in weight.
And the possibility of rapid movement is non-existent, unlike the second.
4- The best cameras for photographing spaces and landscapes are the cameras with a large structure that we talked about, and there is (Hassel Blad), which is the best of this type, but it is very expensive.

Then comes (Bronica), which is medium in price, and finally there is nothing wrong with the camera (645 - Mamiya), which has a reasonable price in this category.
About the lenses, you can choose the lens that you want with your camera.
5- It seems that there is confusion in what I have read. It is true that every 100 grams is allocated for five liters of water.
6- A solution for highlighting, to be dissolved in 5 liters of water.
A - Metol 10 grams.
B - Sulfite 100 grams.
C - Hydroquinone 20 grams.
d' carbonate 125 gr.
E - bromide 5 grams.
7- Carbonate is the most in terms of quantity and is related to heat.
8- The fixative is supposed to be cold, and this is what we notice when defrosting..as the cold activates the fixation process⏹

⏺ Information about some lenses

Please advise me about a “macro” lens, to zoom in on the subject, and does it have to be a zoom lens, knowing that I own a camera (Canon - T70), a 50mm lens, and a 100 x 300mm lens.
2 - I would also like to guide me with information about the wide angle lens (Wide Angle »
3- The lens with a high focal length and its measurements. Will it serve me during filming from the stands of the sports stadiums to photograph a player or a group of players?

Thank you for this help and forward
Ahmed Mohammed Al-Ghamdi
Institute of Public Administration - Riyadh

- The wide field lens (macro) is like the standard lens of 50 mm or 55 mm, and according to the manufacturers. If it is for precise uses and sensitive subjects, it is preferable that it be single.
Where the advantage of enlarging the subject on the negative from 1 to 20 times greater.
As for the zoom lenses, which are characterized by a zoom ring, they are not accurate for sensitive subjects, and therefore the degree of magnification on the negative is from 1 to 8 times greater.

Wide angle lenses
Varied and according to the need for frequent use. If you prefer it for using scenes and for obtaining unrealistic effects for artistic subjects, the 24 mm lens is still the best.
For group photography, and for more clarity, there is a 28 mm lens. If you want a lens that is acceptable for all uses - but without significant side effects - there is a 35 mm lens.
High focal length lenses are: 400mm, 500mm, 600mm, 1000mm.

And the 500mm lens remains that meets the need you want, and it is good for long distances with the adoption of a tripod, although you may find it difficult at first in the process of focusing and chasing players through the viewfinder, but with training and perseverance you can get good results.
However, you have to adopt the front rows of the stands in order to be closer to the player.
You can also adopt the zoom lens that you own, 100 x 300 mm, as it is good for these subjects, with the adoption of a three-legged stand, and you should also use a Doppler adapter link x 2, so that the possibility of the lens becomes 200 x 600 mm, and you can control movement and space more with the zoom lens ⏹