Hi, all my comments regarding constant aperture WERE with vinage AND "modern" digital camera usage. Probably even MORE so with current digital. I cant speak for the K10D, but I can on the istDS and its got very narrow exposure latitude because of its limited dynamic range making autoexposure essentially useless to me and I would only use it if I absolutely had no choice...
I dont know about anybody else, but when I DO have consistant lighting, like a clear, sunny day or studio lights/flashes, I MUCH MUCH MUCH prefer manual (fixed) exposure mode, and with a zoom its GOT to be constant aperture for that to work right. Using autoexposure, even under consistant lighting gives you INCONSISTANT exposures with any camera, any lens, because the camera gets fooled every time the subject reflectance changes and the exposure settings get changed for no reason.... jco -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of John Whittingham Sent: Friday, March 02, 2007 4:07 PM To: Pentax-Discuss Mail List Subject: RE: Alternative to the DA50-200/4-5.6 ? - Try the SMCK 45-125/4 On Fri, 2 Mar 2007 12:35:32 -0500, J. C. O'Connell wrote > I guess you and I just have totally different priorities. I > dont use the 200-300mm (FF equiv)/(135-200 APS) range on zooms > hardly at all (its a speciality, rather than general purpose, range based > on actual needs for me, and when I go that long, I generally prefer > primes ). > In the more common 28-200(FF)/18-135(APS) range, I would much rather > have a FASTER > constant aperture zoom lens/lenses (especially for MANUAL exposure > which I prefer for most situations, even on digital at this point > due to exposure latitude problems) , and especially for manual focussing > which I still prefer on ANY camera in most situations. I really > HATE variable aperture zooms, because Manual exposure with them, both > ambient and flash is nearly impossible to get consistant > results in terms of exposure as you zoom in and out when the > f-stop variation is one stop or more from end to end and it often > is. > JCO Hi John, Yes seems that way, I often use manual exposure and manual focusing, but more often aperture priority and AF. With the more modern cameras I find variable aperture zooms less of a problem than with say my MX. The K10D is even more convenient as I can set desired f-stop and shutter speed and let the camera choose the sensitivity, hey no changing film emulsions. For the size and weight of the 45-125 I would replace it with the FA 80-320 on digital, giving me a 480mm f/5.6 equivalent at the long end, sometimes 600mm is inadequate for my needs depending on subject. As regards a lightweight kit, I'm not really concerned about the number of lenses as long as they fit into a Lowepro Nova 3 bag. I had several combinations for the MZ-3 one of which was: 24/2.8, FA 28-105 and FA80-320, I'm still not decided on the wide end for digital. If I need anything lighter, it's a holster case, one lens on camera and some creativity/imagination 8) Regards, John ------------------------------------------------------------------------ ---------------------------- The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. ------------------------------------------------------------------------ ---------------------------- -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
