</span><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (tschmid @ May 14 2003, 09:37 PM)</td></tr><tr><td id='QUOTE'> BTW: the 180mm lenses officially do cover 13x18cm (which equals 5x7&quot; quite exactly) - so it&#39;s not really the same situation here </td></tr></table><span class='postcolor'>
Just to add a note of confusion: 13x18cm measures exactly 5" by 7", but 5x7" film is measurably smaller. Take a look at Schneiders spec&#39;s for f:6,8/120mm Angulon... They claim it covers 5x7", but not 13x18cm&#33;

There are also different lens series, with different coverage. Most 180mm cover 5x7, some do not. Some 135mm&#39;s cover 4x5", some only 9x12cm, some do not...

Besides, we&#39;re not talking about infinity here. This far the biggest enlargement I&#39;ve made from a 5x7" neg is 11x14", just a bit more than 2x (and that&#39;s big enough for me). Whether the lens covers 5x7 when enlarging 20x is irrelevant to me, as I&#39;d have to rebuild the entire house to get the working distance&#33;

Check the specs for the lens you&#39;re thinking of buying before you buy.