Joe posted this on Reddit:

I recently re-did my website mmcalc.com.

mmCalc is a 35mm lens equivalent and crop factor calculator. Simply input your lenses focal length, the size of your sensor, and what the maximum aperture of your lens is and you’ll get what the lens would be in terms of 35mm full-frame. mmCalc also provides a crop factor calculator that allows you to input the dimensions of your sensor and find out what the exact crop factor is. If you’re unable to calculate for you lens with the pre-defined values, mmCalc also provides a completely customizable calculator that allows you to input your own crop factor, aperture, focal length, and even sensor dimensions.

In addition to standard sensors (m43, aps-c, 1/2.3″, etc), mmCalc also provide calculations for medium and large format sensors. It also has both an Android and iOS app.

This is the best crop factor calculator I have seen yet.

Alex Drummeroff
Street Portrait
Olympus E-M1MarkII+OLYMPUS M.25mm F1.2
https://www.flickr.com/photos/154959889@N03/
#microfourthirdsgallery

1) To submit your picture for the weekly readers roundup post you can choose one of the following two options:
– Instagram: Follow @microfourthirdsgallery and tag us on your picture to give us the permission to repost your image on the instagram gallery and on 43rumors (we will credit you)
– Facebook: Submit your picture on our group: facebook.com/groups/microft. Please add the hashtag “#microfourthirdsgallery ” to grant the permission for reposting on 43rumors. Without the hashtag we will not add your picture!

2) Like and comment the pictures from other readers here: instagram.com/microfourthirdsgallery and facebook.com/groups/microft
3) A selection of most liked pictures by the community and by me 43rumors admin will be posted weekly on 43rumors.

Note: When sending a pic feel free to also add a link to your site to promote yourself! And please do share one single picture per week only. Do not spam :)

This is the weekly selection:

Personal View posted this Interview with Mathew Frazer from Panasonic about all main improvements in Panasonic GH5 v2.3

Top 3 must have accessories for the Panasonic LUMIX G9

A day in the life of the Panasonic ZS200 (Imaging Resource).
Les bonnes affaires reviennent! (PhotoDanielM).
Boya BY-PM700 USB Microphone (Personal View).
The Macro Gourmet, with Ruby Frei (Explora).

Share your best pictures on our new Instagram MicroFourThirdsGallery.

Plenty of news on the facebook E-M1II group and the GH5 group.

TLDR: “I bought an early review unit of the Commlite Speedbooster for MFT cameras, its similar in price and performance to the popular Viltrox EF-M2 speedbooster. I have made a video on it, not sure if its something your readers would enjoy, but wanted to give back to the community for all the wonderful information you have made available here.
Commlite CM-AEF-MFT Booster Adapter review: https://youtu.be/5TX7NHn_0Dg “

Olympus 60mm f2.8 MACRO LENS Review! – BEST MFT Macro Lens?

Behind the shot with andy sands (Olympus UK).
Convert Raw to DNG? You might be making a mistake (Northrup).
Lanparte EVA1A-01 Arm Extension for Panasonic EVA1 Camera (Personal View).
The Home Studio, Part 4: Speedlights, Monolights, and Power Packs (Explora).

Share your best pictures on our new Instagram MicroFourThirdsGallery.

Plenty of news on the facebook E-M1II group and the GH5 group.

Marc: “Here’s a new video from our AYP team “4 Dramatic Lighting Setups like Carravaggio” https://youtu.be/W8_IgAjGdfU“

The M.Zuiko Digital 17mm 1:2.8 has OFFICIALLY discontinued.

http://four-thirds.org/en/microft/single.html#c=FINISH – This list contains lists of discontinued μ4/3 lenses, now with the 17/2.8.
http://asia.olympus-imaging.com/product/dslr/mlens/index.html#anc03 – The 17/2.8 was belonged to the M.Zuiko (standard) line-up, but disappeared.

For now the lens is still in Stock in many stores like BHphoto. It’s unclear yet if this means that Olympus will launch a new updates version soon.

–

Thanks to the anonymous source who sent me this!

How to Choose the Perfect Filter

Review: Olympus 180mm 2.0 OM Zuiko Auto-T (Philip Reeve).
In photography there are NO rules (The Art of Photography)
Holy Trinity – Teil 1: 45mm f/1,2 (Pen And Tell).
Color Gamuts: A Quick Primer (Explora).
BOYA BY-MM1 On Camera Small Cardioid Microphone (Personal View).
Deadpool: How the Camera can Tell a Joke (Wolfcrow).

Share your best pictures on our new Instagram MicroFourThirdsGallery.

Plenty of news on the facebook E-M1II group and the GH5 group.