AF lens adjustments, are they still necessary on the K5II/K5IIs


Mannesty

Link Posted 23/01/2013 - 09:29
I'm wondering if these are still necessary on a per lens basis on the K5II & K5IIs.
Peter E Smith

My flickr Photostream

DaveHolmes

Link Posted 23/01/2013 - 09:43
I've not done any lens adjustments on my K5mkOne as on the whole my lenses appear sharp enough and I'm scared I'll jinx it!!

Wonder if there's more of a need to do lens adjustments with DA rather than FA lenses (most of mine are FA)?
........................................................................
Digital:
Pentax K5- Vivitar 19mm 3.8; FA35mm f2; D-Xenon 100mm macro f2.8; DA50-200mm WR...
Flash:
Yongnuo YN-560; Vivitar 285HV; Cactus V4 triggers...
Film:
Pentax-MX & M50mm f1.4; Spottie & 55mm f1.8; MG & M40mm 2.8...

http://www.flickr.com/photos/daveholmesphotos/

johnriley

Link Posted 23/01/2013 - 10:01
There was nothing wrong with the samples I had, they were spot on, but the feature is available if needed.
Best regards, John

woodworm

Link Posted 23/01/2013 - 10:08
I haven't needed to do any on my K5II and everything seems to be sharp enough, though I haven't tested it yet. It's odd as some of the same lenses needed quite a varied adjustment on my GX20 and not all the same way / amount.

Smeggypants

Link Posted 23/01/2013 - 11:08
DaveHolmes wrote:
I've not done any lens adjustments on my K5mkOne as on the whole my lenses appear sharp enough and I'm scared I'll jinx it!!

Wonder if there's more of a need to do lens adjustments with DA rather than FA lenses (most of mine are FA)?

My FA50 needs loads of adjustment on both my K-5s, Much more than any of my DA lenses.

There's nothing to jinx btw. It's just a software setting in the custom menu.
[i]Bodies: 1x K-5IIs, 2x K-5, Sony TX-5, Nokia 808
Lenses: Pentax DA 10-17mm ED(IF) Fish Eye, Pentax DA 14mm f/2.8, Sigma 17-70mm f/2.8, Pentax-A 28mm f/2.8, Sigma 30mm F1.4 EX DC, Pentax-A 50mm f/1.2, Pentax-A 50mm f/1.4, Pentax-FA 50mm f/1.4, Pentax-A 50mm f/1.7, Pentax DA* 50-135mm f/2.8, Sigma 135-400mm APO DG, and more ..
Flash: AF-540FGZ, Vivitar 283

Horst

Link Posted 23/01/2013 - 11:26
I am slowly getting very worried when I read about this lens adjustment business.

I have no idea how to do it and if I have to do it.
Does it mean every time I change lenses I have to somehow readjust it.
It seems to be quite a complicated business.

If anyone can enlighten me, why and how to do it, I would be grateful.
Regards, Horst

MattMatic

Link Posted 23/01/2013 - 11:51
Quote:
I am slowly getting very worried when I read about this lens adjustment business.

Don't worry

If you're not sure you need it - forget it

It's only when you find that AF locks on and yet the focus point is either behind or in front of the subject you focused on. Errors typically only show when using very fast lenses (e.g. f/1.4, f/2.8 etc)

HTH!
Matt
http://www.mattmatic.co.uk
(For gallery, tips and links)

montyaus

Link Posted 23/01/2013 - 12:04
There are threads on this forum on how to adjust the lenses,if you do a search you will find it is quite easy to do.

The Sigma`s don't need any adjustment,or are nearly right(maybe
+/- 1 ) as for the 31 limited it needs +8,when i first tried it at different aperture's it wasn`t ok until f8 not what one would expect from a top prime.

Jack.
K5iis,K7,KM, MG, Super A, MZ50.
24f2.8; 28f2.8;31 limited; 35f2; 55f1.8; 135f2.8; 400f5.6:
Some zooms

MrB

Link Posted 23/01/2013 - 12:20
If there is any focus inaccuracy it is usually very small and only likely to become apparent when the depth of field is very small, e.g. close up work and/or using wide apertures. If there is no obvious problem in the images just leave it alone, but if you want to check it there are free charts and instructions here:
http://pentaxdslrs.blogspot.co.uk/2008/06/part-1-autofocus-adjustment-for-pentax...

Philip
Last Edited by MrB on 23/01/2013 - 12:21

cabstar

Link Posted 23/01/2013 - 12:49
Ive found the da* lenses needed no adjustment on either the mki or mkii, my primes needed slight adjustment on the mki but not the mkii, i thnk the improved focussing accuracy on the mkii has more effect on sharpness than the mki which must be the fault of poor accuracy on the mk or even user error
PPG Wedding photography Flickr
Concert photography

Currently on a Pentax hiatus until an FF Pentax is released

cabstar

Link Posted 23/01/2013 - 12:51
As an add on i found most third party af lenses needed adjustment on the mki which was my main reason for switching over to da* lenses and have not regretted doing this...
PPG Wedding photography Flickr
Concert photography

Currently on a Pentax hiatus until an FF Pentax is released

Mannesty

Link Posted 23/01/2013 - 16:23
Thanks for all the replies, just waiting for the battery for my shiny new K5II to charge.
Peter E Smith

My flickr Photostream

Gwyn

Link Posted 23/01/2013 - 16:51
Congratulations Peter.
I hope I'll be doing the same sometime next week, snow permitting.

Mike-P

Link Posted 23/01/2013 - 16:59
Still deciding ....
. My Flickr

Gwyn

Link Posted 23/01/2013 - 18:00
Mike-P wrote:
Still deciding ....

Don't wait too long!
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