Originally posted by jeryst I have the opportunity to start doing some portrait work, and I an not really happy with
the sharpness of my DA 18-55 lens, so I would like some opinions from the experts here.
What is the best lens to use for portrait work? Pentax or third party doesnt matter, but I
would like to retain all of the features of the K20 (AE, AF, etc).
FWIW, I actually shoot portraits in a real photo studio, though I don't know if this actually gives my opinion any credibility, this being the internet and all. I'm also not going to get caught up in the "what is a portrait" stupidity.
Anyway, I've found the DA*70/2.8 to be my most used lens. The 77 is somewhat nicer, but my room is just a wee bit short (I have about 30 feet that I can back up from the subject).
This is for what would be considered traditional portraits, from face only to half length.
If you want more of the subject than that, you would be better served my the DA*55/1.4, or FA50/1.4. I've owned both, but sold the 50 in favour of the 55. I rarely sell lenses.
If you are doing full environmental portraits, you will want something substantially shorter than 50-55mm, depending on the environment, any focal length form the 15mm right up to 35mm might be desirable. Consequently, it is very difficult to make a recommendation regarding focal lengths for this sort of imagery, other than several lenses are required if this is your interest.
I think a faster lens than what zooms are able to give is important for depth of field considerations.
Also, the image posted above is painfully over sharpened. I wouldn't use that example of what the lens can do, it's more of a testament to bad post processing.