pentax d fa 28-105


reso

Link Posted 24/12/2016 - 12:43
can some one in simple terms would this work ok on a k5 ii s and what would be the focal lenght be 28-105 or 42- 157.5

thanks
k5iis tamron 10-24 sp tamron 17-50sp 2.8 sigma 24-70 2.8 ex dg macro pentax f 35-135 tokina 28-105 da 55-300 faj 75-300 tamron 70-200 sp 2.8 sigma 400 f 5.6
kenko pz af 1.5 dg converter and a flash

pschlute

Link Posted 24/12/2016 - 12:53
It should work just fine. The lens has been designed for a full frame sensor, but it will work fine on a crop as the centre images a lens produces are invariable sharper than the edges.

The focal length will always be 28-105.
Peter



My Flickr page

johnriley

Link Posted 24/12/2016 - 13:23
It will always be a 28-105mm, but the field of view on your K-5 IIs will be similar to using a 42-157.5mm lens on a full frame format. You might find the 18-135mm lens more useful, unless you are buying with a view to upgrading to a K-1 at some point.
Best regards, John

reso

Link Posted 24/12/2016 - 13:53
Thanks very much a lot clearer now
k5iis tamron 10-24 sp tamron 17-50sp 2.8 sigma 24-70 2.8 ex dg macro pentax f 35-135 tokina 28-105 da 55-300 faj 75-300 tamron 70-200 sp 2.8 sigma 400 f 5.6
kenko pz af 1.5 dg converter and a flash

MrB

Link Posted 24/12/2016 - 14:51
pschlute wrote:

It should work just fine. The lens has been designed for a full frame sensor, but it will work fine on a crop as the centre images a lens produces are invariable sharper than the edges.

And it does exactly that - great quality on my K-5 IIs and K-70. It suits me, but be aware that its range is effectively standard lens to short telephoto on these APS-C sensor cameras. If you need wide-angle within the same zoom lens, consider the 18-135 as John suggests, or the 16-85, but those two are not full-frame. All three lenses are similar sizes and are WR.

Cheers.
Philip

reso

Link Posted 24/12/2016 - 20:21
will be ordering a 18-135 form srs thanks for all the advice
happy christmas
k5iis tamron 10-24 sp tamron 17-50sp 2.8 sigma 24-70 2.8 ex dg macro pentax f 35-135 tokina 28-105 da 55-300 faj 75-300 tamron 70-200 sp 2.8 sigma 400 f 5.6
kenko pz af 1.5 dg converter and a flash

reso

Link Posted 07/01/2017 - 19:46
did not go for the 18-135 but went for a D-fa 100wr after a great deal from srs and so far the lens is fantastic
k5iis tamron 10-24 sp tamron 17-50sp 2.8 sigma 24-70 2.8 ex dg macro pentax f 35-135 tokina 28-105 da 55-300 faj 75-300 tamron 70-200 sp 2.8 sigma 400 f 5.6
kenko pz af 1.5 dg converter and a flash
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