#202 in Digital camera lenses
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Reddit mentions of Rokinon 10mm F2.8 ED AS NCS CS Ultra Wide Angle Lens Canon EF-S Type for Canon Digital SLR Cameras (10M-C)
Sentiment score: 2
Reddit mentions: 3
We found 3 Reddit mentions of Rokinon 10mm F2.8 ED AS NCS CS Ultra Wide Angle Lens Canon EF-S Type for Canon Digital SLR Cameras (10M-C). Here are the top ones.
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- Nano Crystal coating system (n's) for increased light transmission and reduced internal Reflections
- Maximum diameter: 3. 43 inches (87mm). fast F28 maximum aperture + close-focusing to 95 inches = maximum versatility in all shooting conditions
- Optimized for excellent optical quality and true ultra-wide 106 Degree edge to edge coverage with Canon APS-C sensor digital cameras
- Utilizes 3 high precision (2 aspherical + 1 ED) Lens elements for superior image quality
- Inner focusing system (if) – length doesn't change and front element does not rotate – keeps integrated petal-type lens hood properly oriented
Features:
Specs:
| Color | Black |
| Height | 3.37999324 Inches |
| Length | 3.0999938 Inches |
| Number of items | 1 |
| Release date | August 2018 |
| Size | one size |
| Weight | 1.3999926838881 Pounds |
| Width | 3.37999324 Inches |
you can take the exact same shot over and over for median stacking to reduce noise, no need to alter settings. You are right that 25s is right on the edge of causing star movement.
https://petapixel.com/2015/01/06/avoid-star-trails-following-500-rule/
I would still try median stacking @ 20 seconds with a couple shots, but you're correct- you may need a lens that can open wider to get your exposure short enough for this technique.
Fast wide angle lenses aren't cheap unfortunately. Here is the bottom of the barrel for your application. Rokinon qual control is shit so one copy will be great another will be crap.
https://www.amazon.com/Rokinon-Ultra-Digital-Cameras-10M-C/dp/B00JD4TCR6
Everyone likes this one, if you can scrounge up another 100$.
https://www.amazon.com/Tokina-11-16mm-AT-X116-Digital-Cameras/dp/B007ORX8ME/
You can also rent these from a place like lensrental.com to see if you want to save the money to own one.
Edit: median stacking intro: https://petapixel.com/2013/05/29/a-look-at-reducing-noise-in-photographs-using-median-blending/
Ah, now we're getting somewhere. :)
Take a read through http://www.lonelyspeck.com/lonely-specks-ultimate-list-of-best-astrophotography-lenses/ . There's more detail in the article, but their budget recommendations are:
You can probably find them cheaper at reputable used lens sites.
Thank you so much for all the suggestions! I'm going to try find a shop to rent and see which of those lenses I like best. Somewhat related, but I'm looking for an ultra wide angle lens for landscapes since I often travel a lot with family. If I'm looking to go as wide as possible without going fisheye, a 10mm for Canon EF mounts like this 10mm Rokinon Canon EF with my speedbooster, would be wider than a 10mm for Micro Four-Thirds like this Rokinon 10mm ? Or would they actually end up looking pretty similar