thanks a lot Pankaj ji I am feeling more confident now. Let me try it from the market.
-- Dr. Gurcharan Singh Associate Professor SGTB Khalsa College, University of Delhi, Delhi-110007 Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018. Phone: 011-25518297 Mob: 9810359089 http://people.du.ac.in/~singhg45/ On Sun, Nov 22, 2009 at 6:41 PM, Dr. Pankaj Kumar <sahanipan...@gmail.com>wrote: > Respected Gurcharan Sir, > > Both of these lenses which you have mentioned will not give results as > good as a professional macro lens compatible to your camera. These > lenses are nothing but magnifying glasses, you may use more than one > at a time, It brings a buldge in the central area of the image, and > secondly, on the periphery of the image there will be aberration too. > To avoid this you can use lower apertures but with good flash but > still it will not have that quality as that of professional lens. > > Just if u wish to check how good your lenses is working, make squares > on inset, on the paper, and take a picture, from as close as you can > get to it. then check in the image whether the squares are looking > like squares, i.e., do they have straight lines or curved? > > For your camera model, you have only two options of macro lens from > Sony, but these lenses are too costly (You may check in grey market > for lower price): > > 1. SAL100M28 - 100mm F2.8 Macro, minimum distance 35cm and image size > will be 100% (59,000/-). > 2. SAL50M28 - 50mm F2.8 Macro, minimum distance 55cm and the image > size will be 50% (39,990/-) > > "image size will be 100%" - this means, when you focus the image at > the closest distance, what you see in the viewfinder will be 100% of > the actual size of the subject. > > A good ring flash which can be used with any of the lenses you have > mentioned as well as the two i suggested will cost around 6000/- > (Vivitar). > > Regards > Pankaj > > -- > > You received this message because you are subscribed to the Google Groups > "indiantreepix" group. > To post to this group, send email to indiantree...@googlegroups.com. > To unsubscribe from this group, send email to > indiantreepix+unsubscr...@googlegroups.com<indiantreepix%2bunsubscr...@googlegroups.com> > . > For more options, visit this group at > http://groups.google.com/group/indiantreepix?hl=. > > > -- You received this message because you are subscribed to the Google Groups "indiantreepix" group. To post to this group, send email to indiantree...@googlegroups.com. To unsubscribe from this group, send email to indiantreepix+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/indiantreepix?hl=.
