{"version":"https:\/\/jsonfeed.org\/version\/1","title":"maxhaesslein.de Notes JSON Feed","description":"Some notes on different things, so I don't forget them.","home_page_url":"https:\/\/www.maxhaesslein.de\/","feed_url":"https:\/\/www.maxhaesslein.de\/notes.json","items":[{"id":"https:\/\/www.maxhaesslein.de\/notes\/my-favorite-mft-lenses","url":"https:\/\/www.maxhaesslein.de\/notes\/my-favorite-mft-lenses","title":"My favorite (MFT) lenses","content_html":"

I use the Olympus PEN E-P7<\/a> as my everyday camera. Here are some of my favorite lenses for taking pictures:<\/p>

\n\n\t\u2625<\/a><\/span>\n\t\n\tLaowa Argus 18mm f\/0.95<\/span>\n\n<\/h2>\n

By far my favorite lens is the Laowa Argus 18mm f\/0.95 MFT APO<\/a>. With the MFT crop factor, it's comparable to a 36mm f\/1.9 full frame lens. The optical quality is stunning, especially for the price, but it is also one of the harder lenses to use because the focus is fully manual. Especially at f\/0.95 it's hard to nail the sharp area, which means I discard a lot of photos. It's a lens for when you have time, not if you need to nail a shot quickly. I rely heavily on the zoom function and focus peaking on the camera when using this lens, especially at f\/1.4 or f\/0.95. The bokeh is especially pleasing. Sometimes it feels a little bit like an anamorphic lens due to the barrel distortion. The lens has a switch mechanism to set the aperture ring to \"click\" or \"smooth\", so it's also suitable for video. The focusing ring is buttery smooth, and the aperture ring has a satisfying click (or is buttery smooth as well when you switch it to de-clicked mode). There is also a 25mm f\/0.95<\/a> version (full frame equivalent of 50mm f\/1.9) of this lens.<\/p>\"\"\"\"\"\"

\n\n\t\u2625<\/a><\/span>\n\t\n\tLumix 14mm f\/2.5 & 20mm f\/1.7<\/span>\n\n<\/h2>\n

My everyday lens is the LUMIX G 14mm f\/2.5 II Asph.<\/a> In combination with the E-P7, it makes for a very lightweight and compact camera with a 28mm f\/5 full-frame equivalent field of view and a decent autofocus.<\/p>\"\"\"\"\"\"

I also use the LUMIX G 20mm f\/1.7 II Asph.<\/a>, which offers a 40mm f\/3.4 full-frame equivalent field of view with shallower depth of field. I carry it with me all the time, but the autofocus is much slower and it is a bit too \"zoomed in\" for my taste, so I don't use it that often.<\/p>\"\"\"\"\"\"

\n\n\t\u2625<\/a><\/span>\n\t\n\tHonorable Mentions<\/span>\n\n<\/h2>\n

The Laowa 7.5mm f\/2<\/a> brought back my joy for photography in 2020. All photos in my photo diary (except the iPhone shots) from 2020<\/a> and 2021<\/a> were taken with this lens. It has manual focus, but it is so wide that everything is sharp anyway if you set the focus point to 1m or more. There is now also a 6mm variant<\/a> for an even wider field of view. Nowadays I use this lens less, but it is so small I can take it with me without adding much extra weight.<\/p>\"\"

Another great wide-angle lens is the Leica 12mm f\/1.4<\/a>. It's a super sharp lens with fast autofocus, but a bit on the heavier side, so I don't carry it that often. I probably should use it more often, though.<\/p>\"\"","date_published":"2026-03-11T15:06:00+00:00"},{"id":"https:\/\/www.maxhaesslein.de\/notes\/timemachine-backup-to-a-linux-server","url":"https:\/\/www.maxhaesslein.de\/notes\/timemachine-backup-to-a-linux-server","title":"TimeMachine Backup to a Linux Server","content_html":"

I tested these instructions on Ubuntu Server 22.04, but they should work anywhere you can install Samba.<\/p>

Install Samba:<\/p>

sudo apt install samba<\/span><\/code><\/pre>\n
Add a specific user for the TimeMachine backup. This user doesn't need a home directory, a Unix password or a login. After creating the user, add a password for Samba.<\/p>
sudo adduser --no-create-home --disabled-password --disabled-login timemachine<\/span>\nsudo smbpasswd -a timemachine<\/span><\/code><\/pre>\n
Edit the Samba config \/etc\/samba\/smb.conf<\/code> and add the following:<\/p>
# add these lines for TimeMachine support:<\/span>\nfruit:aapl = yes<\/span>\nfruit:nfs_aces = no<\/span>\nfruit:model = MacSamba<\/span>\nserver min protocol = SMB2_02<\/span>\nserver max protocol = SMB3<\/span>\n <\/span>\n# we set multicast to 'no' and install Avahi instead<\/span>\nmulticast dns register = no<\/span>\n <\/span>\n# add a share for TimeMachine:<\/span>\n[TimeMachine]<\/span>\npath = \/srv\/timemachine<\/span>\ncomment = TimeMachine Backup<\/span>\nvfs objects = catia fruit streams_xattr<\/span>\nfruit:time machine = yes<\/span>\nfruit:time machine max size = 2000G<\/span>\nvalid users = timemachine<\/span>\nwriteable = yes<\/span>\nbrowseable = yes<\/span>\nguest ok = no<\/span><\/code><\/pre>\n
The path<\/code> must point to an empty directory. The fruit:time machine max size<\/code> should be at least double the size of your Mac disk.<\/p>
Start Samba:<\/p>
sudo systemctl start smbd.service<\/span>\nsudo systemctl enable<\/span> smbd.service<\/span>\n# or, if you made changes, restart:<\/span><\/span>\nsudo systemctl restart smbd.service<\/span><\/code><\/pre>\n
You may need to open the following ports in the firewall on your server for Samba to work correctly:<\/p>