User manual POLAROID MP-4 PLUS EXPOSURE GUIDE

[. . . ] Photomacrography with the MP-4 Exposure Guide Selecting the right lens for photomacrography Basic Focusing Steps Magnification Tables MP4/MP4+ Exposure Guide1 How to determine recommended shutter speed: Table A: Find the number that applies to the speed of the film you are using. Table B: Measure the length of the material being copied and the length of its focused image on the ground glass (to determine the reproduction scale). If your total has a 1/2 in it, use the next higher full number from Table D. Table A Film Speed ISO3000/36° . . . . . . . . . . . . . [. . . ] 2 16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6** 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15** 18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40** 19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 ½ min. ** 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . This compensation is an average for Polaroid instant films in general, and thus a rough guide only. Note that color films will require filtration in addition to a longer exposure. Table B Reproduction Scale 1:10 to 1:5 . . . . . . . . . . . . . . . 8 Measure the length of the original and its length on the ground glass to determine the reproduction scale. For information or technical assistance: From within the U. S. , call toll-free 1-800-343-5000, Monday-Friday, 8 AM to 8 PM (Eastern Time). If outside the U. S. , contact the nearest Polaroid office. Table C Lens Aperture f/4. 5 . . . . . . . . . . . . . . . . . . . . . . . Thus, for f/11-f/16 use 3½. 1 This is intended as a guide, not a precise exposure indicator. You may have to compensate for unpredictable variables which affect exposure, such as brightness of window or room lighting, differences in color or contrast of the subject material, voltage fluctuations, or the age of the lamps. Selecting the right lens for photomacrography The table below shows the range of magnifications you can achieve with each of the MP-4 lenses. Note that you have several lens options for achieving various magnifications. For example, to enlarge an object five times, you can use a 75mm lens with two macro extensions, a 50mm lens with one macro extension, or a 35mm lens by itself. If you have a choice between two or more lenses, always use the lens with the longer focal length. [. . . ] To increase image size, increase the bellows extension and reduce the lens-to-subject distance. To decrease image size, reduce the bellows extension and increase the lens-tosubject distance. If you get a sharp image that is not quite the size you want, make a small adjustment of both the bellows extension and the lens-to-subject distance. MP-4 Fixed Head Magnification 1:1 2x 3x 4x 5x 6x 7x 8x 9x 10x 11x 12x 13x 14x 15x 16x 18x 20x 22x 24x 26x 28x 30x 32x 135mm 22. 5 24. 0* 25. 5** 105mm 16. 9 15. 4* 25. 9* 24. 4** 75mm 18. 2 25. 7 21. 2* 16. 7** 24. 2** 50mm 11. 2 16. 2 21. 2 26. 2 19. 2* 24. 2* 17. 2** 22. 2** 35mm 17mm 16. 6 20. 1 23. 6 15. 1* 18. 6* 22. 1* 25. 6* 17. 1** 20. 6** 24. 1** 10. 6 12. 3 14. 0 15. 7 17. 4 19. 1 20. 8 24. 2 15. 6* 19. 0* 22. 4* 25. 8* 17. 2** 20. 6** 24. 0** MP-4 Sliding Head Magnification 1:1 2x 3x 4x 5x 6x 7x 8x 9x 10x 11x 12x 13x 14x 15x 16x 18x 20x 22x 24x 26x 28x 30x 32x 34x 135mm 22. 1 23. 6* 25. 1** 105mm 16. 5 27. 0 25. 5* 24. 0** 75mm 17. 8 25. 3 20. 8* 16. 3** 23. 8** 50mm 10. 8 15. 8 20. 8 25. 8 18. 8* 23. 8* 16. 8* 21. 8* 26. 8** 35mm 17mm 16. 2 19. 7 23. 2 26. 7 18. 2* 21. 7* 25. 2* 16. 7** 20. 2** 23. 7** 10. 2 11. 9 13. 6 15. 3 17. 0 18. 7 20. 4 23. 8 15. 2* 18. 6* 22. 0* 25. 4* 16. 8** 20. 2** 23. 6** 27. 0** *Add one macro extension. [. . . ]