k-5 focussing DA*50-135 at f2.8


Link Posted 06/09/2011 - 22:05
I would appreciate people's thoughts on focussing the 50-135 at f2.8 on the K-5. My usual approach is fix the focus point to the central point, focus using a half shutter press, then recompose and take the shot.

-at around a meter or so the DoF is a few millimetres
-there is no real guidance on how big the focus area really is

Attached is an example image (my first attempt at attaching an image, so forgive me if it doesn't work) that to my mind is out of focus i.e. far eye rather than near eye.

Am I being too fussy, or expecting too much?
Flickr feedback always appreciated: https://www.flickr.com/photos/robheath/

Pentax K-3/DA 18-135mm WR/DA 18-250mm/DA*50-135/Tamron 70-300/AF360FGZ/Manfrotto 055XPROB/a few other bits and pieces


Link Posted 06/09/2011 - 22:25

It doesn't look at all bad on my [email protected] and a metre distance you will have a very shallow dof..don't think you really have much to worry about...Regards...Ken
K20D...ist DS ,DA18/55,DA16/45.DA* 50/135,"A"1.7 50MM..."A" 70/210..M 50mm f2...Tamron 90mm macro,28/300 Tamron,200/500 Tamron 6.9....A Pentax DA*300... Sigma10/20,FA31mm 1.8 Ltd*********,FA 77mm Ltd!


Link Posted 06/09/2011 - 22:55
I prefer to use selective focus at 2.8 purely because the subject is likely to move between focussing & recomposing..
PPG Wedding photography Flickr
Concert photography

Currently on a Pentax hiatus until an FF Pentax is released


Link Posted 06/09/2011 - 23:00
focus and recompose is bad and even more so on wide apatures as it only takes mm to ruin a pic.
use your focus points not focus and recompose.
this will save me expliaing it.
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