I'll try the shift on the MZS John.

Used the 50-135 today and also put the 1.7AF converter behind it. Huge difference in focus speed. Lens alone is slow, snaps straight in with the 1.7 attached. It would seem that the screw dive is faster than the lens motor.

Regards

Aye it is John. They have always been difficult to focus, hence I bought the Minolta AF version. I also have the Russian 1100mm f/13.5, it's a beast, never gets used. I suppose I take as a real challenge trying to get acceptable results from the MF versions. Making a rod for my back?

Just been out with the 28mm shift and hold my hand up "apart from seeing the image shift through the viewfinder, I dont see how it reduces convergence". It is the third time its ever been on a body.

Regards

I found it quite difficult to pull a sharp focus John. Did not use mirror lock. Set up was Slick 813CF with a Manfrotto 3275 geared head and cable release.

Focus issues down to me. Still trying the 200 and 300 SMC's now. The 1.7AF is impressive in operation! First ever use of it.

Regards

Taken this morning.
link

Regards

I did increase the saturation on this shot John, I don't necessarily do that as standard practice. I have a Soligor 650 reflex in Pentax fit that I will also try out later today on the K7. I also note that it is f/8.5 and not f/8 that I had thought.

Along with the other two longer lenses (Pentax), I will give it some work today. Also intend to try the 15mm and 28 shift since they have both been in topic recently.

Best regards

So are we discussing the use of shorter Pentax telephoto lenses against third party longer glass, along with their IQ?

If so, here is a hand held shot on an IS body. 500mmAF Reflex.

link

Effective FOV would be the same as 750mm due to the 1.5x factor of the sensor.

I also have a 50-500 Bigma and find it heavy and sometimes hard to get the best from it, hence I bought the AF Reflex.

I will be using my 200 and 300 SMC's later today with the 1.7xAF and will post some results if they turn out to have a decent IQ.

Regards

I had to assume that processing would be same. I agree on the crispness but my first impression was that the Sig shot left a better visual impression.

Regards

Prefer the better colour saturation and contrast of the Sigma.

Regards

Possible choice?
link

Regards

Looks like a no brainer...advantage to the Sigmiester

Regards