Has anyone any info on this lens. It is a Pentax fit.

Thoramay.

What is the lowest F stop number? I used F4. is that wrong?. I have read all of the instructions carefully but it is not for a Pentax.
It did mention flash and I tried it on the second shot but then realised I had it on two second delay and the flash was over before the camera fired and would have had no effect
You will need to hold my hand in this.
Tomorrrow I will take it outdoors in my greenhouse set up for macro work.
Maximum aperature F32? or F2.8?
Get it square on
Set on AV. 2 second timer on
On tripod. Camera set at 45%

John. If you compare the 6. 10. 14 either side of the focus line there is some difference there.

I have just taken a macro pic of a dead butterfly. When I pull it right up the sharpness is just off.

When I try the 300mm on a day lily, I get the same result. The sharpness is just off.

If I am being fussy it is because I know what the camera did produce. A quick check of my portfolio will testify.

Being a macro person it is important that the focus is dead on.

thoughts, please.

thoramay

Mike. It is not a physical thing but I do struggle with nervous issues and my hand shakes like nobody's business when I am nervous.
It is more in the mind. I think I inherited the saying..If it can go wrong, it will. and it generally do.

Your offer is generous. I doubt that I have the latest firmware loaded.

Let me try out the 300mm tomorrow and be satisfied that it is a problem. A quick flip through my portfolio will show that the camera did once behave.

regards Thoramay.

Robbie. I am trying to respond positively. It is not just the 300mm. I have only had that lens for two days and have used it once.

The results were variable and I put that down to inexperience with a new lens. I have never removed SR on a tripod. It's not given me grief before

Now! My Pentax macro is seldom off the camera. It is against my experienec with this lens that concerns me.
I have also used a 50mm 1.8 and the Pentax 18-55.
I am now taking shots just before, on the yellow indicator and just after. None of them seems to me to be as sharp as I have been used to.

I need to spend time with the 300mm and test it out as has been suggested.
Will upload a pic to the Gallery tomorrow of my usual result.

Thoramay

Robbie. as previously stated all shots with macro are taken on a tripod. The camera making the decisions in AF.

I take your point about narrow depth of focus but..I usually take it at this setting to get all the background out of focus and I do not get this result. F10 will give distracting background in my experience. I am judging these shots against previous results.

I have about twenty shots of the adder, all following one another and the results are variable.

There was afair amount of wind about with the orchid, so shot at 500th to stop any movement. camera set the speed.

thoramay.

Have just loaded into Gallery a shot of an orchis taken yesterday
Again Pentax macro lens ISO 200 F2.8 at 500th.

All the shots,and there are 50 or more are just as much out of focus. I specialise in close up/macro. Taken on the tripod in my normal method. I cannot believe that I can being doing it all so badly.

Thoramay.

Settings on juvenile adder.

Shot on tiles Macro Pentax 100mm F22 1/125 at ISO 200.

In grass
Macro Pentax 100mm F32 1/10th at ISO 200.

Catching this snake still enough was a trial and I let the camera do the work in AF.

thoramay.

Algi. I have been to the file you have given and it is SCARY!!

thoramay

I am using a Monfroto 486RC2 tripod. The K10 with the 300mm is mounted on a monfrotto 454 macro adjusting rail. this allows me to set the weight balance over the tripod. This set up then allows the lens hood to sit tight on the rail and the whole arrangement is rock steady. I use a radio remote control.

I just wish my ability allowed me to post pictures on the Forum other than the Gallery.
My recent two pics of a juvenile adder on the Gallery are reasonable but not dead sharp.
My shaky hands means I always take pics on the tripod where possible.
Where would I be without this Forum.

Thoramay.