Night star photography Lense

Of those I would go for the 14. Very small, optically decent, cheap second hand. The previously discussed 12mm Samyang is a cracking lens if you can live with the manual focus and aperture when using it for other stuff, as is the Samyang 7.5mm fisheye - this would be great for whole-sky starfield photography but again manual focus and a bit niche for other uses.

I have all 3, plus the 9-18, and a sky tracker, but haven't got off my arse to do any astro yet :p
 
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King4aDay said:
Of those I would go for the 14. Very small, optically decent, cheap second hand. The previously discussed 12mm Samyang is a cracking lens if you can live with the manual focus and aperture when using it for other stuff, as is the Samyang 7.5mm fisheye - this would be great for whole-sky starfield photography but again manual focus and a bit niche for other uses.

I have all 3, plus the 9-18, and a sky tracker, but haven't got off my arse to do any astro yet :p
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thanks man

i've had a look at the second hand prices and they seem very reasonable for my budget.

As i will be using this for landscape shots and also street photography the 14mm seems to be more suited to my needs.
 
RaV said:
Wider is definitely better for general astrophotography. Have a read of this article: http://petapixel.com/2015/01/06/avoid-star-trails-following-500-rule/

Was just the first of many that came up on google. The numbers would be slightly different for micro 4/3rds, but it would make the light gathering abilities of those two lens very similar if you were trying to get sharp and not streaking star photos.
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yeah thanks. i guess i just double the focal length of full frame lens

so a 14mm would be 28mm and looking on the chart it suggests a exposure time of 18 second
 
lixxus said:
Hi all

I have a m43s gx7 and i am looking to buy a new lens to shoot stars and time lapses.

I have come across both these lenses

Panasonic H-H025E-S LUMIX G 25 mm/F1.7 ASPH Lens

&

Olympus M.ZUIKO DIGITAL 45mm 1:1.8 Lens


Which one would be better and more versatile, especially during day when not shooting at night for street/urban photography.

many thanks for your suggestions
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The 45mm is too long, even the 25mm is quite long, remember m43 has a 2x crop factor so the 25mm is equivalent to 50mm on a FF sensor. I would look wider personally, something like the Olympus 12mm f/2.0
 
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As others have said if you're doing star scares - you want fully open aperture and prime focus really to ensure you have the best convergence of star colours.

Flexible exposure time that's not limited is good, shoot multiple exposures in raw format without compression and if possible - switch off the LCD display (adds heat noise).

My photography is a little more 'zoomed' using 300mm f/4 and 670mm f/6.38 prime lenses.
 
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