Archived posting to the Leica Users Group, 2002/05/15
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I'm afraid I disagree completely. The focus shift caused by changing filtration with a well-corrected lens is very small indeed. This is more of a problem with longer focus lenses but the effect would still be too small to worry about on an enlarger. Additionally, you should always focus an enlarger wide open as this means you are focusing when depth of focus is at its smallest. Stopping after focusing down will increase the acceptable focus field making it more likely that your prints will be sharp. I've been using a V35 for a while and I haven't adjusted the autofocus since I initially set it up. My prints are still pin-sharp whatever the colour of the light. Pericles must be moving something when he changes filtration. >>>>>>>>>>>>>>>>>It is a known fact the one should focus an enlarger with the filters in place and at the f/stop to be used for printing. The color of the light will cause a focus shift as will changing the f/stop. So always focus your enlarger, with a grain focuser, with filters in place, and set to the desired f/stop.<<<<<<<<<<<<<<< - ------------------------------------------------------------------------------ This message is intended only for the personal and confidential use of the designated recipient(s) named above. If you are not the intended recipient of this message you are hereby notified that any review, dissemination, distribution or copying of this message is strictly prohibited. This communication is for information purposes only and should not be regarded as an offer to sell or as a solicitation of an offer to buy any financial product, an official confirmation of any transaction, or as an official statement of Lehman Brothers. Email transmission cannot be guaranteed to be secure or error-free. Therefore, we do not represent that this information is complete or accurate and it should not be relied upon as such. All information is subject to change without notice. - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html