Hi Mark ... No, I don't carry many, if any, filters with me. I use a minimal number of filters IAC, but, when shooting a specific situation and looking for a particular effect, then it's time to consider which, if any, filter variant may be used. If, for example, I was heading to the mountains, I may take a Haze 2A or equivalent, and/or a "minus blue" depending on film choice, etc., but around town I may not carry or use any filter at all.
Shel > [Original Message] > From: Mark Cassino > That's interesting about the variants of UV filters. Do you carry a lot of > UV filter variants with you? How do you decide when to use which one? > > I've used primarily Skylight's and have noted that the light transmission > charts show that some skylights block UV radiation while others do not. In > my own kit I went with 49, 58, and 77mm SMC Skylight filters, with step up > rings to accommodate different size lenses. I did that mostly for the sake > of consistency and because I trust the quality of Pentax filters, and it > keeps the system simple. > > I've been interested in trying a 'minus blue' filter with B&W film - haven't > gotten around to getting one yet though. > > - MCC > - - - - - - - - - - - - - - - - - - - - > Mark Cassino Photography > Kalamazoo, MI > www.markcassino.com > - - - - - - - - - - - - - - - - - - - - > ----- Original Message ----- > From: "Shel Belinkoff" <[EMAIL PROTECTED]> > To: <pentax-discuss@pdml.net> > Sent: Friday, June 03, 2005 12:18 AM > Subject: Re: Questions re Pentax made lens filters > > > > It should be noted that there are different strengths of UV (Sometimes > > called haze) filters, as there are skylight filters. Tiffen, just for an > > example, has several UV filters that they offer: > > > > UV Protector - Protects lens from dust, moisture, scratches, and breakage. > > > > > > Haze 1 - Reduces excessive blue haze caused by UV light by absorbing 71% > > of > > UV. Recommended for all-around UV control. > > > > Haze 2A - Absorbs all UV light; reduces haze; maintains color and image > > clarity. Best for high altitude and marine scenes. > > > > UV 17 - Created for the photographer who wants to absorb most but not all > > UV light. It absorbs slightly less UV light than the Haze 2A. > > > > Warm UV - combines the benefits of the UV 17 with the Tiffen 812 Color > > Warming Filter for added warmth. > > > > Other companies may have similar variations in their filter lineup. B+W > > has several variants of the UV or Haze filter. In some situations the > > "minus blue" filter may be a better choice for eliminating the blue found > > at high altitudes and in other environments, but not all companies make > > such a filter, which is a yellow filter that falls within a particular > > range. Not every yellow filter has the same characteristics. > > > > One B+W "UV" filter is the KR6, which is suited for daylight with a high > > percentage of blue (midday in the mountains during the summer), and which > > is recommended for color film.used in situations where an extreme blue > > tone > > is to be expected. Not only does it block ultraviolet light and reduce > > blue > > tones in the shade, but it also penetrates light fog. > > > > The bottom line is that it's easy to slap a UV filter on your lens and > > believe you're getting a certain result, such as the results provided by > > some of the above and similar filters. Unfortunately, many people believe > > a UV filter is a UV filter, or that all skylight filters are the same. > > Such is not the case, and the clever photographer chooses his or her > > filter > > with careful thought to the desired results. > > > > As for cleaning Multi-Coated filters, the two best cleaners that I;ve come > > across are the ones sold by The Filter Connection (I think it's their MC > > formula) and the cleaner sold by ClearSight. Both do a remarkable job > > with > > no streaking or leaving of residual haze or film, as another perennial > > favorite, ROR, cab do if not carefully applied. > > > > Shel
