I have used my two Sigma 1.4 DG primes ( 30 and 85) on the K1 without a scratch or blemish developing but I can see that even with the camera and the lenses meeting the manufacturing tolerances there is a only a very minute clearance between the K1 and the Lens mounts ( < 100 microns literally)

On my gear the clearance ( gap) can only be seen if a very bright light is placed behind the potential "touchpoint"

However I do believe that if one does not take care mounting and removing the lens it could close the gap and create contact.

Surely very carefully taking the sharp corner off the lens mount ring at the 12' clock position with a fine emery board (like our ladies use for their nails) eliminates the problem.

It needs literally, just a very minute removal of the sharpness on the corner, which needs to be hardly visible followed by a good " puffing" after; should take less than a few seconds to create a minute airgap between the edge ( corner) of the lens mounting ring and the K 1 body.

Obviously the rear of the lens needs protection to prevent any fine debris getting in the mount or on the rear glass.

Check with backlight after to ensure you have created a very small airgap that allows the backlight through and if so the problem is solved.

Better than sending it back to Sigma for a week (or two, or three) to have that ring changed (or modified ) for a " micro chamfered one". which is likely the repair they will offer

As I said above, I had no need on my Sigmas as there is no contact ; both of the lenses were on the list not to be used before a mod is carried out.

Any views

Same thoughts as Lenny; the ring reflection makes the eyes look artificial which I think then adds to the overall unatural feel that the BW brings to the image.

But it is still a very interesting and difficult subject to capture and get good dof and sharpness on, so it is still a very skillful well executed shot

Ken Rockwells Verdict after full test of 100 Wr (Macro)

This is a great little lens for any Pentax. It's small, sharp, fast, light and tough.

It offers essentially perfect optical performance and is the world's smallest and lightest 100mm macro lens.

See link below which makes that ridiculous magazine look even more ridiculous

https://www.ephotozine.com/article/pentax-d-fa-100mm-f-2-8-macro-wr-lens-review-...#Verdict

Time for an comprensive boycott, It is singularly the most "impotent" and uninformative rag out there; with few exceptions none of them are of much use and nine of them are worth £5 for sure.

Practical Photography is only a very biased and glorified sales publication Offering nothing to for the hobbyist, enthusisat or pro photographer.


Also noticed that Pentax didn't pick up a single award in the Photography News Award and there were many catagories ( the boss, a well known Mr Ch.... is unnofficial and self proclaimed "Head of Canon marketing ")..

Should "Practical Photography" be renamed : "Impractical photograpy"

On second thoughts maybe Peter's choice "Practical Pornography" does it full justice.

Lovely minimalist artistic compositions, I really like 3, 7 & 8 - great set, very well taken, would look good as large canvas block-mounted prints.

Hi Nigel,

Thanks for your comments; always really appreciated and I will send some picture of the new gear soon
Best Regards

A nice thing Greg is that the K3 batteries are the same and I took a spare to give it a try in the shop.

Got a day on the birds next week with my 150-450 so I can't wait to do that with the K1 .

As regards the 15-30, despite having read about the front element I was quite surprised how " domed" it is but the distortion correction on the K1 really does what it claims.

So I hope to try it out in better conditions on the week end because it does look to be very sharp.

Regards

Just Picked up a K1 and 15-30, but the wife needed to call in the shops so I was left in the car determined not to open the boxes until I got home; 25 mins passed and I had lost he will to live so I cracked open the boxes and went for a random wander followed a little later by a couple of grab shots at a relatives house

The light was a little challenging to say the least but I thought that might give me the opportunity to test it on Hi ISO, hand holding at slow shutter speeds ( some with very tight depth of field ); certainly not ideal conditions or subjects but take a look below.

1. Dolly the car



2. Door Knockers ( again)


3.Later - massive crop of cat



4. The boss (no flash single 6 watt led illumination)



5. Nice Detail



6. Black and white knocker ( maybe better?)

Blistering: I have the 128 Gb in all slots in my two K3IIs x 2
Jh
http://www.mymemory.co.uk/SDXC/Lexar/Lexar-64GB-Lexar-Professional-1000x-SD-%28SDXC%29-Card-UHS-II-U3---150MB_sb

That is such a lovely capture, sure the last two are classic but any shot of a red is special.

Well done