Tamron 15-30mm f/2.8 for Milky Way?

Started Dec 28, 2016 | Discussions
G Rothwell Regular Member • Posts: 353
Tamron 15-30mm f/2.8 for Milky Way?

No, I'm not asking for a trade, but some lens advice.

I'm looking for wide and bright with minimal distortion. I guess everyone is.

The best site I found for comparing distortions is lenstip.

From what I can see the Tamron does very well.

http://www.lenstip.com/432.7-Lens_review-Tamron_15-30_mm_f_2.8_Di_VC_USD_Coma__astigmatism_and_bokeh.html

I know that the Rokinon / Samyang 24mm f/1.4 is highly rated, but its performance on the lenstip review is poor.

http://www.lenstip.com/330.7-Lens_review-Samyang_24_mm_f_1.4_ED_AS_UMC_Coma__astigmatism_and_bokeh.html

Are there any better lens review sites for astro photography?

Are there any lenses that are clearly better options?

Many thanks

Graham

 G Rothwell's gear list:G Rothwell's gear list
Panasonic ZS100 Nikon D750 Nikon D7200 Nikon D810 Sigma 150-600mm F5-6.3 | C +6 more
Tamron 15-30mm F2.8
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rnclark Veteran Member • Posts: 3,957
Re: Tamron 15-30mm f/2.8 for Milky Way?

G Rothwell wrote:

No, I'm not asking for a trade, but some lens advice.

I'm looking for wide and bright with minimal distortion. I guess everyone is.

The best site I found for comparing distortions is lenstip.

From what I can see the Tamron does very well.

http://www.lenstip.com/432.7-Lens_review-Tamron_15-30_mm_f_2.8_Di_VC_USD_Coma__astigmatism_and_bokeh.html

I know that the Rokinon / Samyang 24mm f/1.4 is highly rated, but its performance on the lenstip review is poor.

http://www.lenstip.com/330.7-Lens_review-Samyang_24_mm_f_1.4_ED_AS_UMC_Coma__astigmatism_and_bokeh.html

Are there any better lens review sites for astro photography?

Are there any lenses that are clearly better options?

Many thanks

Graham

Sigma Art 18-35 f/1.8 for crop.

Sigma 35 f/1.4 2nd best

Canon 35 f/1.4 version II (latest version),  This is the top lens in this category.

If you want wider, make a mosaic.

dgstewart New Member • Posts: 19
Re: Example

Here are two Tamron 15-30 F2.8 full size examples from central Illinois, with a little sharpening and noise reduction from 5D Mark III:

First from July 14, 2015 looking south at 10:30 p.m., there is some Milky Way, with possible lightning in the lower left.  The lens made the  power pole lean in the lower right.  There is plenty of light pollution, mostly from town of 6000 people about 7 miles away.  Settings: 15mm, ISO 3200, 8 sec, F2.8

15mm F2.8  Milky Way, Looking South in July 2015

Second from Aug 12, 2015, looking east at 2:08 a.m., trying to get a Perseid Meteor as shown between Perseus and Taurus.  Settings: 16mm ISO 6400, 5 Sec, F2.8,

16mm F2.8   Perseid Meteor near Perseus and Taurus in Aug 2015

chris gunn
chris gunn Veteran Member • Posts: 9,268
Re: Tamron 15-30mm f/2.8 for Milky Way?

The 15-30 seems to be very well behaved.

The best results are with a pano, and it's nice to use a lens fast enough to not require tracking, so  the 35/1.4 can be popular.

The Samyang 24/1.4 looks great with APSC.

-- hide signature --

cheers!
Gunn
-- Get a big lens and get closer™.

OP G Rothwell Regular Member • Posts: 353
Re: Tamron 15-30mm f/2.8 for Milky Way?

Thanks for the suggestions, I'll be using Nikon Full Frame, so only the Sigma 35 1.4 applies.

I did look at it, but want something wider.  You suggest stitching, doesn't the movement of the stars cause a problem?

Thanks

 G Rothwell's gear list:G Rothwell's gear list
Panasonic ZS100 Nikon D750 Nikon D7200 Nikon D810 Sigma 150-600mm F5-6.3 | C +6 more
OP G Rothwell Regular Member • Posts: 353
Re: Example

Great to capture the milky way despite the light pollution.

It really helps to see some actual photos taken with the lens, much appreciated.

 G Rothwell's gear list:G Rothwell's gear list
Panasonic ZS100 Nikon D750 Nikon D7200 Nikon D810 Sigma 150-600mm F5-6.3 | C +6 more
OP G Rothwell Regular Member • Posts: 353
Re: Tamron 15-30mm f/2.8 for Milky Way?

Doesn't the movement of the stars cause a problem for stitching?

 G Rothwell's gear list:G Rothwell's gear list
Panasonic ZS100 Nikon D750 Nikon D7200 Nikon D810 Sigma 150-600mm F5-6.3 | C +6 more
six34sigma
six34sigma Senior Member • Posts: 2,216
Re: Tamron 15-30mm f/2.8 for Milky Way?

My recommendation to you is to try the lenses by renting. Lensrentals sot com has been a solid performer for me. Good service and on time.

This summer rented the much ballyhooed Nikon 14-24 f/2.8 and the Rokinon 24 f/1.4. The 14-24 produced some good images. But after looking at the images carefully one could see some coma at the very edges. The images are still print worthy. Did not like the Rokinon 24 as much. That was on a D750. Own a Tokina 11-16 f/2.8 for use on my D7100 and like that lens as well.

Like the 500 rule use the 400 rule instead to help limit star trails. Anything you can open up to get more light the better it is. There are Zeiss Lenses that are good like the Zeiss 15mm but that's a $3K lens. My preferred method is to rent it for a few days when the milky way is out and I have plans to shoot it.

Like you am looking for that good lens for Astrophotography and have been tempted enough by the specifications on the Tamron 15-30 to try it in the summer.

Rent first discover what works for you then buy if you can rationalize the lens.

Happy New Year.

-- hide signature --

Regards,
Sanjay

 six34sigma's gear list:six34sigma's gear list
Nikon D7100 Nikon D750 Nikon AF-S DX Nikkor 16-85mm f/3.5-5.6G ED VR Nikon AF-S Nikkor 24-120mm F4G ED VR Nikon D90 +9 more
rnclark Veteran Member • Posts: 3,957
Re: Tamron 15-30mm f/2.8 for Milky Way?
1

G Rothwell wrote:

Doesn't the movement of the stars cause a problem for stitching?

Between stars in the sky no, because the mosaicking program just aligns the frames. Between land and sky means work in post processing. I use ptgui, mosaic the sky as one set, mosaic the land as a second set then merge the two in photoshop. The challenge is the transition from land to sky can be tedious to mask and feather to look natural. Examples (note the red and green colors in the sky are real and due to airglow; the dark, moonless night sky is not blue):

Night on the Serengeti, Tanzania, Canon 6D + Sigma Art 35 f/1.4, hazy night.

More info at: http://www.clarkvision.com/galleries/gallery.nightscapes/web/serengeti.nightscape.c02.21.2015.IMG_0526-46_d-c2_1400b.html

Summer Milky Way Nightscape with the San Juan Mountains of Colorado, Canon 6D + Sigma Art 35 f/1.4:

More info at: http://www.clarkvision.com/galleries/gallery.nightscapes/web/san.juan.nightscape.rclark.c07.25.2014.IMG_7386-448.f-c1-bin8x8s.html

A 35 f/1.4 has an aperture of 25 mm. A 15 f/2.8 has an aperture of 5.36 mm, which is smaller than the dark adapted average normal human eye. The 35 f/1.4 collect (25/5.36)^2 =21.75 times more light from the subject than the 15 f/2.8. More info in my series: http://www.clarkvision.com/articles/nightscapes/

Roger

dgstewart New Member • Posts: 19
Re: Example, more Tamron 15-30, 19 mm
1

Tamron 15-30 at 19mm,   settings: 20 sec, ISO 3200, F2.8 looking southwest on Sep 2, 2016 at 9:00 p.m.   Heavily processed for contrast and saturation, rotated a little, but not cropped.  There is still plenty of light pollution.  The triangle of Saturn, Mars,  and Antares is just above and right of the bare tree, but showed up better in the reflection.  I hoped for a reflecting Milky Way.

Milky with Mars, Saturn, and Antares Triangle Sep 2, 2016 looking Southwest at 9:00 p.m.

Digitaliz
Digitaliz Regular Member • Posts: 348
Re: Tamron 15-30mm f/2.8 for Milky Way?
2

That lens is My main Astroscape lens.

please visit http://500px.com/digitaliz for Real world examples.

 Digitaliz's gear list:Digitaliz's gear list
Tamron 15-30mm F2.8
chris gunn
chris gunn Veteran Member • Posts: 9,268
Re: Tamron 15-30mm f/2.8 for Milky Way?

six34sigma wrote:

My recommendation to you is to try the lenses by renting. Lensrentals sot com has been a solid performer for me. Good service and on time.

This summer rented the much ballyhooed Nikon 14-24 f/2.8 and the Rokinon 24 f/1.4. The 14-24 produced some good images. But after looking at the images carefully one could see some coma at the very edges. The images are still print worthy. Did not like the Rokinon 24 as much. That was on a D750. Own a Tokina 11-16 f/2.8 for use on my D7100 and like that lens as well.

What didn't you like about the 24/1.4? The vignetting?

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cheers!
Gunn
-- Get a big lens and get closer™.

six34sigma
six34sigma Senior Member • Posts: 2,216
Re: Tamron 15-30mm f/2.8 for Milky Way?

Rokinon - sharpness is off at f/1.4 and f/2.0, needs f/2.8 (guess) to get sharp in the middle. Tried the lens wide open and at infinity and did not get the same level of sharpness as the Nikkor 14-24 at f/2.8. The shots from the 14-24 were sharper at f/2.8 at 24mm, at infinity than the Rokinon at f/1.4. 2 stop difference and that is why I rented it, for those 2 stops. Also got more coma than than the 14-24.

Considering other variables:

  • Build variability and this could be big.
  • Photographer issues e.g. ability to focus at infinity.
  • Drinking and trembling hands are not an issue, corrected by tripod (that's supposed to be a joke).
  • Other

Still on the lookout for the perfect astrophotography lens. Not going to happen but keep looking for that unicorn.

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Regards,
Sanjay

 six34sigma's gear list:six34sigma's gear list
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six34sigma
six34sigma Senior Member • Posts: 2,216
Re: Tamron 15-30mm f/2.8 for Milky Way?

Great shots, love them. Like the rendition from the lens also.

You may have settled it for me although will still follow my policy of renting first.

Thanks.

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Regards,
Sanjay

 six34sigma's gear list:six34sigma's gear list
Nikon D7100 Nikon D750 Nikon AF-S DX Nikkor 16-85mm f/3.5-5.6G ED VR Nikon AF-S Nikkor 24-120mm F4G ED VR Nikon D90 +9 more
knwyman
knwyman Regular Member • Posts: 164
Re: Tamron 15-30mm f/2.8 for Milky Way?

I used the Tamron 15-30 for MW last season on my D750 & had very good results, it is a very versatile lens. I picked up a used Sigma 35/1.4 art & am looking forward to using that with a tracking mount soon.

Here's a composition I shot in Acadia National Park last August

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 knwyman's gear list:knwyman's gear list
Olympus E-M1 Nikon D750 Olympus 12-40mm F2.8 Pro Olympus M.Zuiko Digital ED 60mm F2.8 Macro Tamron 15-30mm F2.8 +4 more
Janou New Member • Posts: 7
Re: Tamron 15-30mm f/2.8 for Milky Way?

Hello, is this post dead? Coz i would like to ask you about my tamron. My pictures of milky way are terrible, with probably big coma. WOuld like to know your opinion: is it normal or I have my lens broken?

Tamron 15-30, F2.8, 30sec without "driving". ISO 6400

Cbernhardt Forum Member • Posts: 94
Re: Tamron 15-30mm f/2.8 for Milky Way?
1

I have the Pentax 15-30, which is a rebranded Tammy 15-30 that was made by Tamron for the Pentax FF.  Here is an example

Joshua Tree Milkyway Panorama, Pentax K1, DFA 15-30 F2.8

chris gunn
chris gunn Veteran Member • Posts: 9,268
Re: Tamron 15-30mm f/2.8 for Milky Way?

What camera? I don't see any coma, the radial lines on he second are like what you see when you do long exposures with a rectilinear and astrotracer.

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cheers!
Gunn
-- Get a big lens and get closer™.

swimswithtrout Veteran Member • Posts: 3,575
Re: Tamron 15-30mm f/2.8 for Milky Way?

There's nothing wrong with the lens, That's normal coma for a cheap zoom lens and far too long an exposure. Assuming a 24MP APS-c sensor, you would need to keep your exposures to 11 sec to avoid trailing. A 4/3 would help with the coma but make the trailing worse, a FF would help with the trailing, but make the coma worse.

Digitaliz
Digitaliz Regular Member • Posts: 348
Re: Tamron 15-30mm f/2.8 for Milky Way?

I see no coma. Just startrails. The lens is limited to 20s of exposure on my 6D. 30s will give startrails.

Janou wrote:

Hello, is this post dead? Coz i would like to ask you about my tamron. My pictures of milky way are terrible, with probably big coma. WOuld like to know your opinion: is it normal or I have my lens broken?

Tamron 15-30, F2.8, 30sec without "driving". ISO 6400

 Digitaliz's gear list:Digitaliz's gear list
Tamron 15-30mm F2.8
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