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Forum: Pentax K-3 III 06-18-2021, 10:41 AM

Not happy with Pentax K-3 III
Posted By Lothman

Replies: 145
Views: 14,768

you can have a look at the homepage of the original poster photoinfos.com Fotografie Kameras Teleskope Mikroskope Scanner tests reviews and se tons of information about testing of scanners, telescopes, microscopes,.... He for sure knows how to set up a stable tripod. How should he feel having invested the money in the K3iii and cannot achieve same results on his setup he got with former cameras.? I would be disappointed.
so this site
Vergleich. Vergrößerungsobjektive zum Abfotografieren von Dias und Negativen
demonstrates that he was able to get 5793 dpi at slidescanning using a K1 with pixelshift. This tells me enough about the ridiculous soccer mom comment.

Forum: Pentax News and Rumors 02-05-2021, 12:11 PM

Laowa 100mm F2.8 2:1 Macro lens for k-mount
Posted By Lothman

Replies: 439
Views: 53,839

I`m no longer a Pentax user but I also use the 100mm Laowa Macro on my Sony. This is a test shot of a silicon wafern at 1.4x magnification at f2.8. I shot a stack in small 5µm steps and took the sharpest in each section, 100% crops of a 60 MP shot of a Sony ARiv.
This is an extraordinary good lens for its price, and at pixelshift it shows that it can resolve more than the 60 Megapixel :-)

Forum: Pentax News and Rumors 01-24-2017, 11:06 AM

Pentax "KP" DSLR registered in Indonesia
Posted By Lothman

Replies: 1,319
Views: 167,263

it's from a German forum
DigitalFotoNetz.de :: Thema anzeigen - Pentax KP=

AFA-Fotohandel is a sponsor and dealer, I think we can trust him.

Forum: Photographic Technique 12-05-2016, 03:53 PM

Macro Techniques for Cleaning Tiny Subjects?
Posted By Lothman

Replies: 13
Views: 1,252

on technical objects I use Rodico (watchmaker cleaning putty from Bergeon)

You Tube

You Tube

src="https://www.youtube.com/embed/-JJFtd_S1y4?controls=1" allowfullscreen><br />

May be it also removes small hair, but It is worth a try (at least you can use it to remove dirt,/ fingerprints of your camera gear)

Forum: Pentax SLR Lens Discussion 11-07-2010, 03:14 PM

DA* 16-50mm F2.8, show us what it can do.
Posted By Lothman

Replies: 391
Views: 107,446

16-50 used with a polarizer

Forum: Lens Clubs 11-06-2010, 01:37 PM

Soviet lenses club
Posted By Lothman

Replies: 4,208
Views: 1,076,161

has everyone modified a Rubinar 5,6/500 so that it can focus to infinity when mounted with the necessary spacer to a Pentax DSLR?

Forum: Pentax SLR Lens Discussion 10-24-2010, 10:54 AM

DA* 16-50mm Serial Number Database.
Posted By Lothman

Replies: 528
Views: 161,338

my DA 16-50 had the SDM-failure, started slowly but then it happened more and more often. The lens was repaired by Pentax Germany (Maerz).
S/N:9024482

Now I'm very happy with this lens.

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