Originally posted by mikesbike The HD WR f/4-5.8 lens is definitely worth it. The AF is not slow unless going immediately from a near point to a far point and back- a rather extreme situation. The reason for slowness then is the relative long rotation of the focusing collar, but that is better for fine-tuning manual focus. . . .
I'm sorry if I am beating a dead horse but I have a problem [ well, more than one probably but only one regarding this subject
]
I can't find anything in the reviews which indicate there is a difference between the autofocusing abilities between the DAL, the DA and DA WR versions of the 55-300mm zoom but a noticeable difference between those 3 and the newest PLM version which has an entirely different drive system causing an improvement in the AF speed but as a higher price.
the differences between the DA L version and the others are -
1 - the weight, the DA L being lightest at 425 g (15 oz.)
2 - the HD has different lens coatings than the SMC lenses and:
3 -"the much-loved Pentax Quick-Shift, which allows the manual overriding of the focus ring while the camera is in autofocus mode and without having to switch it to manual focus. It's an excellent feature for helping the lens along and 'resetting' the focus ring while autofocus tracking.
4 - that [ both DA variants ] lens comes with a lens hood. Might seem trivial, however the inclusion of the lens hood in the box is one of the three features that set it apart from the "DA L 55-300."
5 -the bayonet mount, where the lens mount [ of the DA L ] . . . is made of a hardened plastic. "
Read more at:
HD Pentax-DA 55-300mm F4-5.8 ED WR Review - The Three '55-300mm' Variants | PentaxForums.com Reviews
and " While not as critical as the aforementioned three features, you may have also noticed three slight cosmetic differences as well. Starting from the lens mount, the "Pentax Ring" is gray rather than the iconic green. The next difference is the name of the lens itself, clearly visible between the two images where it states either "DA "1:4-5.8" or "DA L 1:4-5.8." The last change is the lack of a distance scale above the focus ring. [ on the DA L ] "
Read more at:
HD Pentax-DA 55-300mm F4-5.8 ED WR Review - The Three '55-300mm' Variants | PentaxForums.com Reviews
of course the DA L is usually cheaper than the others. If you can find the DA or the DA WR version at or near the same price and the same condition as a DA L, I agree, grab one of those.
Have I missed something? I do like to provide correct information in my comments
I never owned any of the 3 DA variants, I did own a DA L variant at one time and found it fit my needs at the time.