[Jonathan Mac]

Sigma 35mm f/2 DG DN on S5


Mouse socks by Jonathan MacDonald, on Flickr

[Jonathan Mac]

Sigma 35mm f/2 DG DN


Looking down the garden by Jonathan MacDonald, on Flickr

[Jonathan Mac]

Sigma 90mm f/2.8 DG DN


Bird on a (barbed) wire by Jonathan MacDonald, on Flickr


Palm trunk by Jonathan MacDonald, on Flickr

[Jonathan Mac]

Some of the last pictures I took with the Sigma 10-20mm f/3.5 before I sold it off. In Valencia in February.


IMG_5679 by Jonathan MacDonald, on Flickr


IMG_5678 by Jonathan MacDonald, on Flickr

[djw]

I hope this is the proper place to ask this question. I have a few Sigma lenses for various platforms and have been pleased with the quality. However, I'm having a problem with the 18-200 Sigma DC 3.5-6.3 that came with my newly acquired K200D. The focus seems to be "off", in that I'm not getting very clear images in autofocus (an 18-55 kit lens does better on this camera). If I work at it, I can get clearer images by manually focusing the Sigma than by AF. The focus ring seems to be dragging too much with the zoom ring. If I turn the zoom, with the camera in manual focus mode, the focus ring goes with it. I can turn the focus ring manually, but it wants to drag the zoom ring also; the only thing stopping it is the stiffness of the zoom ring.

Thoughts? Is this just the way it is with an older lens, or is there a way to rehab it?

Thanks in advance.

[Mbaez]

Minnewaska State Park

Went on a hike with the Pentax K10D and Sigma 18-300 Contemporary

[Mbaez]

Pentax K5IIs + Sigma 50-150, all wide open @ f2.8

Coqui



Aly



Flowers



Enter

[Mbaez]

Pentax KS1 + Sigma 30mm EX DC

Elle Street Art



Sunset Around Midtown



Looking Up

[Jonathan Mac]

Two of my favourites from the 35mm f/2 DG DN from a recent trip to Mojácar on the south-east coast. This lens makes me happy every time I use it and from these two images it seems to have a particular affinity for nice shades of blue.


Bulbs at dusk by Jonathan MacDonald, on Flickr


The man above the gate by Jonathan MacDonald, on Flickr

[Jonathan Mac]

Continuing the "blue" theme with the 35mm f/2 DG DN


The blue lizard by Jonathan MacDonald, on Flickr


Blue windows by Jonathan MacDonald, on Flickr


Blue and white on Mojácar village by Jonathan MacDonald, on Flickr

[Jonathan Mac]

A couple of shots from the Segovia balloon festival with the 90mm f/2.8 DG DN


Yellow balloon by Jonathan MacDonald, on Flickr


Pull by Jonathan MacDonald, on Flickr

[5shot]

My daughter and her husband from this weekend. 18-35 Art @35mm F2.8, !/250, ISO 250

Anyone know why the uploaded image is cooler than the image in Lightroom? I see this often, but I have no idea why it is happening.

---------- Post added 08-09-22 at 12:32 PM ----------

Image from Lightroom



Uploaded Image

[edom31]

SIgma EX 105/2.8

[Mbaez]

Sigma 24mm f/2.8 Super-Wide II Macro Autofocus

Got this prime in the morning and attached to my Pentax K20D
Everything wide open at f/2.8

[Jonathan Mac]

Sigma 35mm DG DN


Flower by Jonathan MacDonald, on Flickr


Bicycle by Jonathan MacDonald, on Flickr