</span><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (Robert @ Mar 31 2003, 01:34 PM)</td></tr><tr><td id='QUOTE'>How about the Aero lens? Aren&#39;t they 2.8?</td></tr></table><span class='postcolor'>
The 178mm Aero Ektar is f/2.5. I seem to remember reading somewhere that you have to make some modifications on the lens board (like add an extension or something) because the lens barrel is so big. Or maybe it&#39;s just that the lens is so big and heavy, you need a better way to support it. You might want to check into that first.

BTW, this lens covers 5x5, some of those lenses I listed previously might just barely cover it, or you might have to step down some to avoid soft corners (or don&#39;t use movements). But most of the press style lenses can be used wide open with good results (whereas some modern f/4.5&#39;s are only good for focusing wide open, and you may even have to stop down some for critical focusing).

Also, add a 150mm Schneider Xenotar (f/2.8), 160mm image circle to the list.