Originally posted by Treedo ... Other than the macro I can carry 3 to 4 lenses. Currently I have the pentax 18-135 wr, 55-300 wr, 35mm f/2.4, and my 100mm vivitar f/2.8 macro...
It sort of depends on where you are going. I'll keep it to 3 lenses based on your existing lenses:
- If going out in nature pack the 55-300 for wildlife. Then you need a lens for landscapes and the 18-135 looks like your widest lens for that but the 35mm prime is probably sharper; pick one for the day and work within its strengths. That leaves room for the 100mm macro you said you always need to have.
- If headed to a dense city the 55-300 is unlikely to be needed. The 18-135 is a good all purpose walkaround lens. The 35mm is good for street photography, plus it's your fastest lens for indoor use and narrow depth of field. And finally the 100mm.
I like to have an ultrawide angle rectilinear (not fish eye) lenses for indoor use, cityscapes, and landscapes. Consider adding a Tamron 10-24, Sigma 10-20, or Pentax 12-24 wide angle zoom. You can add that to the above as a 4th lens to carry.
As you get more familiar with your lenses you'll predict which lenses you'll need on any given day. I used to carry 4 lenses, now I find that I often go out with only 2: my primary lens for the day and a "just in case I unexpectedly need a different focal length" lens.