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التصوير الفوتوغرافي الحديث
التصوير بالألوان وحقائق حول المرشحات
الجزء الأول التصوير بالألوان
تحضير شرائح ملونة للإسقاط
PREPARING COLOR SLIDES FOR PROJECTION
When processed by the processing laboratory , 35mm film is cut into individual transparencies which are mounted in cardboard mounts and returned to the owner . In this mounted form , the pictures are called slides or color slides . The term transparency is also used , but this term applies to the unmounted color film as well as to the mounted one .
Cardboard mounts are quite satisfactory if the slides are to be handled and projected only occasionally . If you want to make a permanent slide show , it is advisable to protect the delicate slides by mounting them between glass . You can , then , handle them as much as you want without fear of damaging them .
A glass mounted transparency stays flat , doesn't buckle and go out of focus in the projector , and is easily kept clean . Should you drop it and break the glass , it is a simple matter to remount it .
Some dealers handle the mounting of slides , but you can do it yourself quite easily . There are metal and plastic slide mounts available which make slide mounting very simple indeed , and many photographers prefer to use such mounts . Full instructions are supplied with them . Figure 4 shows a metal slide mounting kit in use
You may , if you prefer , do your own mounting simply by binding or taping the color transparency between two sheets of thin glass . This is the original method of mounting transparencies and is still the most commonly used . Figures 5 through 10 show how this is done .
The materials you need are shown in Figure 5 : thin sheets of glass ( called cover glass ) , 2 x 2 inches in size ; paper masks ; a roll of binding tape and some small circular gummed stickers . The paper masks are usually silvered on one side .
Figure 4 Remounting a color slide using a commercial slide mounting kit .
Figure 5 Materials needed for mounting 35mm color transparencies between glass .
The transparency must be placed in the mask so that the silvered surface always faces the projector lamp . It then reflects the heat of the lamp away from the slide so it does not heat up so much during projection .
First remove the transparency from the cardboard mount in which it is returned by the processing laboratory . This is done by clipping a corner of the mount and then separating it with the fingernails , starting at the clipped corner . Now hold the transparency so that it is correct left to right and right side up , and insert it between the two halves of the mask so the silvered surface is toward you . The mask opening is slightly smaller than the full 35mm frame , so you can move the transparency around slightly straighten tilted horizons or improve the framing . Some masks have notches to hold the transparency and keep it from shifting . If the masks you use don't have these notches , use a small patch of binding tape to fasten the transparency to the mask .
Insert the sandwich of hasks and transparency between two sheets of cover glass . Line up the edges of the glasses and masks and place the assembled package , edge down , onto a length of unrolled binding tape ( Figure 6 ) .
Rotate the slide assembly on the strip of tape until all four edges are taped together . Fold down the tape and cut the slide free ( Figure 7 ) .
Figure 6 Binding slide and glass sandwich together .
Figure 7 Cutting bound slide free from binding tape .
There will be an overlapping triangle of tape at each corner . Trim these corners ( there are eight of them ) with a pair of small scissors or a razor blade ( Figure 8 ) . The mounted slide will appear as in Figure 9 .
Again holding the slide so it is right side up and correct from left to right , paste a small gummed sticker to the lower left corner ( Figure 10 ) . This is called a thumb spot , and serves to orient the slide for projection . The slide must always be
Figure 8 Trimming excess binding tape at corners .
Figure 9 Appearance of glass mounted slide
Figure 10 Thumb spot should be gummed to glass at lower left hand corner when slide . is upright and facing observer .
placed in the projector so the thumb spot is facing the lamp and in the upper right corner when it is being projected . projection lens everses the image , thus bringing it right side up again . The thumb spot can be pasted to the mask inside the glass for protection if desired , but most users prefer to paste it outside so it can be numbered to prevent slides from becoming mixed up when a slide show is given .
التصوير بالألوان وحقائق حول المرشحات
الجزء الأول التصوير بالألوان
تحضير شرائح ملونة للإسقاط
PREPARING COLOR SLIDES FOR PROJECTION
When processed by the processing laboratory , 35mm film is cut into individual transparencies which are mounted in cardboard mounts and returned to the owner . In this mounted form , the pictures are called slides or color slides . The term transparency is also used , but this term applies to the unmounted color film as well as to the mounted one .
Cardboard mounts are quite satisfactory if the slides are to be handled and projected only occasionally . If you want to make a permanent slide show , it is advisable to protect the delicate slides by mounting them between glass . You can , then , handle them as much as you want without fear of damaging them .
A glass mounted transparency stays flat , doesn't buckle and go out of focus in the projector , and is easily kept clean . Should you drop it and break the glass , it is a simple matter to remount it .
Some dealers handle the mounting of slides , but you can do it yourself quite easily . There are metal and plastic slide mounts available which make slide mounting very simple indeed , and many photographers prefer to use such mounts . Full instructions are supplied with them . Figure 4 shows a metal slide mounting kit in use
You may , if you prefer , do your own mounting simply by binding or taping the color transparency between two sheets of thin glass . This is the original method of mounting transparencies and is still the most commonly used . Figures 5 through 10 show how this is done .
The materials you need are shown in Figure 5 : thin sheets of glass ( called cover glass ) , 2 x 2 inches in size ; paper masks ; a roll of binding tape and some small circular gummed stickers . The paper masks are usually silvered on one side .
Figure 4 Remounting a color slide using a commercial slide mounting kit .
Figure 5 Materials needed for mounting 35mm color transparencies between glass .
The transparency must be placed in the mask so that the silvered surface always faces the projector lamp . It then reflects the heat of the lamp away from the slide so it does not heat up so much during projection .
First remove the transparency from the cardboard mount in which it is returned by the processing laboratory . This is done by clipping a corner of the mount and then separating it with the fingernails , starting at the clipped corner . Now hold the transparency so that it is correct left to right and right side up , and insert it between the two halves of the mask so the silvered surface is toward you . The mask opening is slightly smaller than the full 35mm frame , so you can move the transparency around slightly straighten tilted horizons or improve the framing . Some masks have notches to hold the transparency and keep it from shifting . If the masks you use don't have these notches , use a small patch of binding tape to fasten the transparency to the mask .
Insert the sandwich of hasks and transparency between two sheets of cover glass . Line up the edges of the glasses and masks and place the assembled package , edge down , onto a length of unrolled binding tape ( Figure 6 ) .
Rotate the slide assembly on the strip of tape until all four edges are taped together . Fold down the tape and cut the slide free ( Figure 7 ) .
Figure 6 Binding slide and glass sandwich together .
Figure 7 Cutting bound slide free from binding tape .
There will be an overlapping triangle of tape at each corner . Trim these corners ( there are eight of them ) with a pair of small scissors or a razor blade ( Figure 8 ) . The mounted slide will appear as in Figure 9 .
Again holding the slide so it is right side up and correct from left to right , paste a small gummed sticker to the lower left corner ( Figure 10 ) . This is called a thumb spot , and serves to orient the slide for projection . The slide must always be
Figure 8 Trimming excess binding tape at corners .
Figure 9 Appearance of glass mounted slide
Figure 10 Thumb spot should be gummed to glass at lower left hand corner when slide . is upright and facing observer .
placed in the projector so the thumb spot is facing the lamp and in the upper right corner when it is being projected . projection lens everses the image , thus bringing it right side up again . The thumb spot can be pasted to the mask inside the glass for protection if desired , but most users prefer to paste it outside so it can be numbered to prevent slides from becoming mixed up when a slide show is given .
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