Am i okay using a standard Circular Polarising Filter with my D-SLR or do i need a digital filter?

Question

The reason i ask is the digital filters description included this; " Digital Coated Glass - Reduces 'ghosting' / 'orbs' (reflections from DSLR's CCD)"

Answer 1

IMO a lot of that "digital coated" stuff is pure hype intended to separate you from your money, especially when its associated with no-name filters.

Buy a circular polarizer from Heliopan, B+W, Singh-Ray, Hoya or Tiffen and you'll be fine. If you will be using the polarizer on an extreme wide-angle lens (10-14mm, 12-20mm) then spend the extra money for a thin or slim mount polarizer to reduce the possibilities of vignetting - dark corners on your pictures.

If you have 2 or 3 lenses which take different size filters (67mm, 58mm, 55mm etc.) you can buy filters in the largest size and "step-up rings" such as a 55-67mm or whatever you need. Its usually safe to use a larger filter on a smaller lens but you should never use a smaller filter on a larger lenses. Again, vignetting will result.

Every lens you own should have it own protective UV/Haze filter in place at all times. Remove it only when using your polarizer. I have several lenses that are 30 to 35 years old and their front elements are in perfect condition because they have always been protected by a filter.

Answer 2

Yes you want a circular polarizer. Other polarizing lenses (Linear) can cause problems with the autofocus an with metering on some cameras. I always keep a circularl polarizer in my bag

Some things to take into account

When stacking filters, the polarizer should always be the last (furthest out) filter on the stack. If light passes through a polarizing filter further down the chain may change the results of the other filters you had used.

Lenses with rotating front elements will mess up your polarizing filter's rotation. If your lens has a rotating front element, you should adjust the polarizing filter after you've set the focus.

The effect of the polarizing lens is most prominent at a 90-degree angle to the sun.

Here are some pages on polarizers

http://dpfwiw.com/polarizer.htm

http://luminous-landscape.com/tutorials/...

Answer 3

dont worry about dig. slr in the right mm. sounds like maby you have sony---- pentax will work too!  dave