Showcase Olympus 40-150mm f/2.8 PRO Image Thread

Deleted member 29285 · Jul 19, 2020

mp10s said:
@3dpan …better late than never. I finally got a free evening coinciding with decent conditions: low humidity, clear skies, and late moonrise. Took a few test shots, although I'm pretty sure I don't know what I'm doing. even at 4-8 seconds it looks like I'm getting star trails. most of the shots were facing north(ish)--too far north and I get too much light polution. Think big dipper, not little dipper. Also I'm poor at focusing. I've included full exif data I think, but please feel free to comment and ask for different settings.
My goal was to photograph the clown comet (pennywise's nephew neowise?) but I got there after comet-set so I'll be back out in the coming days/weeks

https://www.flickr.com/photos/mp10s/albums/72157715104601323

For those not interested in stars, here's the obligatory photo:

View attachment 835412 P7040046 by mickey p10s, on Flickr

Cheers.

mickey

Thanks for those test photos. Very Interesting. At 40mm there is a little bit of CA visible on the brighter stars, but that seems to disappear as you zoom in.
Lens reviews say there is some coma at all focal lengths, but I can't see it in your photos. Might be visible at 100% but I couldn't download your pics to try that.
So, very encouraging as an astro lens, especially as there is nothing else vaguely affordable in the 150mm f/2.8 range.
Cheers,

mp10s · Jul 20, 2020

3dpan said:
Might be visible at 100% but I couldn't download your pics to try that.

You should be able to see full size on flickr if you click the "download" icon (bottom-right of the image) and select "view all sizes". LMK if there are specific picd you want and I can send raw as well

Deleted member 29285 · Jul 20, 2020

mp10s said:
You should be able to see full size on flickr if you click the "download" icon (bottom-right of the image) and select "view all sizes". LMK if there are specific picd you want and I can send raw as well

That worked. At 100% there is weeny bit of coma at the lower focal lengths, but negligible at 150mm. And the same for CA.
Thanks for all your efforts. It's difficult to interpret the lens reviewer test results in comparison with the real world.

M.V. · Jul 27, 2020

3dpan said:
That worked. At 100% there is weeny bit of coma at the lower focal lengths, but negligible at 150mm. And the same for CA.
Thanks for all your efforts. It's difficult to interpret the lens reviewer test results in comparison with the real world.

Hi Alec,

Having just started learning astrophotography, I did a quick test of the 40-150 PRO on the Andromeda M31 galaxy, zooming in fully to 150 mm. I don't have a tracker, so I am limited to 1 second f2.8 exposure at ISO 5000 - not really brilliant. I did a stack of 40 exposures with 18 dark frames from a tripod. Sadly, at this exposure, the galaxy cloud is barely visible. It's better seen even at 7 mm with the 7-14 PRO when using a considerably longer exposure time (~20 s).
Camera used was OM-D E-M1 Mark II.

If interested, have a look at the full size jpegs and of a sample .ORF file here: https://drive.google.com/drive/folders/1GkWVbIV-oeYJWXBJmTFvFv-LdZUgISIq.

Looks there is some coma in the image corners wide open at 150 mm, but not too bad. I wish I had a star tracker!

Marko