PENTAX OR TAMRON

My daughter and I both have Tamron 28 - 300 lens`s. Mine on a K10D, hers on a K200D. We are both struggling with focus, they just don`t seem to be that sharp. I put a couple of my shots on the gallery using the tamron. The one with the Pentax 50 - 200 is sharp not `soft` like the Tamron. Scott is suggesting the Pentax 55 - 300 but can I be sure that they will be sharp on the focus front. I don`t consider the Tamron as a dog but as we can`t programme specific lenses into the cameras they just don`t seem to cook the dinner. Be good to have some opinions and experiences from other Tamron users.

Cedric

Hi Cedric, I have a Tamron 18-250 on my K10D and I am really pleased with it. There do not seem to be any issues of soft or unsharp focus.

Well I have the cheapo Tamron 70-300 and apart from some purple fringing its quite sharp you can see some photos on my gallery lots of zoo photos, I also have the Pentax 18-250 and it is now superglued to my K20 and I just love it, hope I have helped
Jack.

cedricd have you tried each others lens on each others camera, you might get better results,

I bought a Tamron 28-300mm to take to Spain on my last trip as I only wanted to take a couple of lenses with me (I have had one before) and it performed ok. Its not spectacular by any means but it's pretty good for the money.

A few shots taken with it .. the wasp nest was with the one I had the first time.

sorry im lost is this the AF28-300mm F/3.5-6.3 XR Di LD Aspherical (IF),:

and mike they look cracking to me,

They certainly don't look very sharp to me. Have they been cropped, or are they the full image?

G

Thanks everyone, Perhaps we will try swapping over lenses at Easter. just feel let down by The Tamrons. Especially having tried the Pentax 50 - 200 which is very sharp.

Cedric

Hi Scott yes they are the ones you describe.

Cedric

Hi Mike, i`m not sure about the cat but the others seem spot on to me, especially the wasps nest. I cant say the ones we take with the Tamrons come close.

Cedric

there was good post a while ago someone else posted about back and front focusing, it explained it very well and i cant find it, but it doesn't mean its the tamrons at fault,

I have an old (non Di) Tamron 28-300. It is back on my Ds now as my husbands lens of choice but I have never had any problems with it, even on the K20D. Maybe the newer lens gives problems.

From what I have seen here the Pentax 55-300 is a really good lens, and may be worth your money - you could always put the Tamrons on e-bay.

Perhaps I will do some more subjective trials. Might be I need to try focussing manually.

Cedric

i would give it ago and try swapping lenses over,