Lothman

you probably averaged out the field curvature by pushing the focus back and got a better compromise. Your initial picture shows that the 15mm can be very sharp in the corner (for example bottom ...

I think we see a lot of field curvature of the 15mm because the near foreground is pretty sharp even in extreme corners, so you probably could focus it at the corners and get sharp corners but ...

Sorry for me this sounds esoteric. If you want to see the reality why on earth do you hold a camera between you and the reality, just see it direct. If you want to capture the reality, everything ...

are you happy with the top left corner?

my black snorkel is also lightproof, it keeps dark even in the brightest sun, but I'm glad that is nor airtight and not watertight :-O so how would this fit your technical descrition of being tight? ...

why was your other thread deleted where you linked an interesting youtube video about BIF. Same with the long thread about cameraville K3iii review? very sad moderation, closing would have been ...

well that depends at what size your customer will look at your photos. For a 800x600 picture for a webpage you may go to f22, for a big wallpaper print degradation at f10 might allready occur. You ...

agreed and even further the old lens must have sufficient resolving quality for a very small pixel pitch what in other words means it must be way "over-engineered" for what its initial purpose was ...

so "Image tracking" is not connected to AF ? and by the way all tests I read state that they did not reach 11 fps while tracking. But around 8-9 fps, this si still a huge improvement on the other ...

in the Pentax promotion video thyself use "outstanding" and "best" a lot. I as a non native speaker understand "outstanding" not as "just matching" the competiotion but being far superior. The ...

focus by wire? "Manual-focus operation of the power-assisted focus mechanism has also been upgraded to optimize the precision and response of detecting the focus ring. As the result, the focus-lens ...

Placed 6^th in the challenge. manual lens, tripod , macro slider

Placed 18^th in the challenge. taken from a Kodak diapositive film, showing my father and friend

or use a stacking software that can handle sucht hings like helicon or zerene

I use an Ishoot tripod (Arca Foot) collar but had to cut a small stripe of plastic because the collar is a little too big. And I agree for a macro slider it is the best to clamp the lens not the ...

I compared the Laowa to my Sony FE90, and sold the Sony (and got the AF Sigma instead). See here Sony 90mm vs Laowa 100mm at 1:1 f2.8: Sony Mirrorless Lens Talk Forum: Digital Photography Review ...

Placed 30^th in the challenge. French coast at Etretat

what about if Pentax would adopt the benefits of MILC AF  and high frame rates in mirror up mode and offer an external EVF. This could also be made tiltable for waist lever shooting and be adapted ...