din

<CENTER><TABLE BORDER=3 CELLSPACING=6 CELLPADDING=10 COLS=2

WIDTH="150" BGCOLOR="#FFFF00" >

<CAPTION>DIN -ASA TABLE</CAPTION>

<TR>

<TD>DIN</TD>

<TD>ASA</TD>

</TR>

<TR>

<TD>6</TD>

<TD>3</TD>

</TR>

<TR>

<TD>7</TD>

<TD>4</TD>

</TR>

<TR>

<TD>8</TD>

<TD>5</TD>

</TR>

<TR>

<TD>9</TD>

<TD>6</TD>

</TR>

<TR>

<TD>10</TD>

<TD>8</TD>

</TR>

<TR>

<TD>11</TD>

<TD>10</TD>

</TR>

<TR>

<TD>12</TD>

<TD>12</TD>

</TR>

<TR>

<TD>13</TD>

<TD>16</TD>

</TR>

<TR>

<TD>14</TD>

<TD>20</TD>

</TR>

<TR>

<TD>15</TD>

<TD>25</TD>

</TR>

<TR>

<TD>16</TD>

<TD>32</TD>

</TR>

<TR>

<TD>17</TD>

<TD>40</TD>

</TR>

<TR>

<TD>18</TD>

<TD>50</TD>

</TR>

<TR>

<TD>19</TD>

<TD>64</TD>

</TR>

<TR>

<TD>20</TD>

<TD>80</TD>

</TR>

<TR>

<TD>21</TD>

<TD>100</TD>

</TR>

<TR>

<TD>22</TD>

<TD>125</TD>

</TR>

<TR>

<TD>23</TD>

<TD>160</TD>

</TR>

<TR>

<TD>24</TD>

<TD>200</TD>

</TR>

<TR>

<TD>25</TD>

<TD>250</TD>

</TR>

<TR>

<TD>26</TD>

<TD>320</TD>

</TR>

<TR>

<TD>27</TD>

<TD>400</TD>

</TR>

<TR>

<TD>28</TD>

<TD>500</TD>

</TR>

<TR>

<TD>29</TD>

<TD>640</TD>

</TR>

<TR>

<TD>30</TD>

<TD>800</TD>

</TR>

<TR>

<TD>31</TD>

<TD>1000</TD>

</TR>

<TR>

<TD>32</TD>

<TD>1300</TD>

</TR>

<TR>

<TD>33</TD>

<TD>1600</TD>

</TR>

<TR>

<TD>34</TD>

<TD>2000</TD>

</TR>

<TR>

<TD>35</TD>

<TD>2500</TD>

</TR>

<TR>

<TD>36</TD>

<TD>3200</TD>

</TR>

<TR>

<TD>37</TD>

<TD>4000</TD>

</TR>

<TR>

<TD>38</TD>

<TD>5000</TD>

</TR>

<TR>

<TD>39</TD>

<TD>6400</TD>

</TR>

<TR>

<TD>40</TD>

<TD>8000</TD>

</TR>

</TABLE></CENTER>

DIN stands for Deutche Industrie Norm. Film speed doubles every 3 degrees, it is a logarithmatic scale.

<p> ASA stands for American Standard Association. This is a arithmetric system. Film speed is proportional to ASA number. Each step increases by the cubic root of 2= 1.25, two steps by 1.6, hence the number ASA 125, 160, 250, 320 ETC.

<P> Old British stand BS number = ASA number.

<p> The International Standard Organization ISO number is a combination of

ASA/DIN.