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I added the logo without transparency and adjusted the size to fit the font size of my personal logo. I also updated my past posts, but the visibility really depends on the photo, it's visible quite well here: https://steemit.com/photocircle/@jpphotography/fireworks-at-tete-a-tete-festival but almost invisible here: https://steemit.com/photochaincommunity/@jpphotography/cityscape-of-mostar-bosnia-and-herzegowina
Is it ok like this or should I increase the transparency even more?

Btw, I will bring an old project of mine to Steemit soon where I will post a daily photo with a few words in German, but these photos are a couple of years old, so the quality will not be as good as the photos on my main account, also they probably won't fit the weekly theme. Can I participate in the photochain contest with them as well?

Sorry for the later eply. Still barely visible but good for now. Try to get them more visible in the future if you can.

Not sure as it would have text in German and would be completely unrelated. What will the subjects of this images be?

I have made some more edits to the logo, on most photos it should be more visible now.

My other project is @maeusenews and it is not completely unrelated to stock photography since many of the photos that I will publish there are already online on various stock agencies. The project will bring a revised version of my website about gerbils to the Steem Blockchain. For now, the focus is on re-editing existing posts from the Website and bringing them to Steemit, but I want to mix in some photo posts as well (eventually one per day for a few months) and these are the posts that I would watermark and tag with #ppc / #photochaincommunity.

Ok then it shouln't be a problem. Looking forward to seeing them in #ppc

Btw, would you like to vote for this weeks winner? Every participant has the right to cast one vote for who he/she thinks should win, so if you want to feel free to pick your favourite and leave the link to his/hers entry here.

I will remember to vote this week!