September 27, 2007

Stacking the Moon with the Tamron SP 500/8

Two days before full moon in September 2007 i wanted to try the Tamron SP 500/8 against the moon. Armed with an adapter for Olympus OM to Canon EOS, a Tamron 1.4 TC (EOS) and a good solid Manfrotto tripod i set out for - well - just the garden.



With the combination of Canon's 30D Body and the TC, the whole setup compares to a 1120mm lens at about f/11 or more.

To avoid any shaking i used a remotecontrol and mirror lock-up. After some test shots i took a whole series - to be exact, 27 images of the moon. And the shooting session was already over.


Here is one sample, 1/160 @ iso 500. 50% cropped. (click for 1:1 size)


Here the same 100% cropped. (click for 1:1 size)

Well the quality is not that impressive, but for starters it's ok.

This is where "Stacking" and the 27 images fits in.

Using the Software Autopano pro i stacked all the images into one image.


From this image (click for 1:1 size), which looks blurred, you are able to sharpen your way to a much better image of the Moon. But you'll need the right software, i used the freeware Registax 4.

Registax has the wavelet sharpener, which really improves the sharpness of your Moon photo.

Sharpening is always a bad idea due to the, in the process, introduced grains. But with the help of Noise Ninja you can make this picture worth looking at.


Here we see the original and the Wavelet sharpened images plus Noise Ninja.


And this is the 100% cropping. (click for 1:1 size)

As you can see, much more detail is available from all these shots as just from one image. One thought came to me during the processing: Why not resize the 27 images from 8 megapixel to 32? Then stack these monsters and do the Wavelet and Noise Ninja, the result must be much better, right?

Well i tried it.


The first image is the original 8mp, the second is the 8mp with wl+nn and the last is the 32mp with wl+nn scaled back down to 8mp!

I must say it's much better. But this seems to be the limit, a least with 27 images. The downscaling of the end picture has a nice sideeffect, it reduces the grains times 4.


This is the end result, scaled down to 33,3% of the 32 mp image and cropped.

Links

51 comments:

ctloh said...

Hi,

I like your blog on mirror lens. :)

Actually I just re-started my photograph hobby again and was looking for some mirror lens to shot the moon. And well, you just did it!

Cheers

:)

info said...

Hi Per,

Stacking requires enourmous stability of the combination. With a 1000mm mirror and a TC it is possible to get fine shots from other subjects as well. I recently made some pics of an oystercatcher with the 1700mm combo. And then, who cares about some doughnuts?
www.flickr.com/pwsonline

regards Paul

Alexandra said...

I have that exsact camera, a tamron sp 1:8 500mm tele macro. I dont have the camera but im not sure weather to sell it or to keep it. I cant find any info on the selling prise or anything! HELP!

Per Hoffmann Olsen said...

HI Alexandra, try to search Ebay or a similar website. I guess if it is good condition you could get around 250 Euro almost 325 Dollars.

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Autumn said...

It looks awesome.
But I cannot take such pictures.
And i have a Tamron SP 1:8 for sale.
Can you tell me how it can be sold or if you would be interested???

Autumn said...

I am going to try this while it is still with me though!!

NICE !!! :)

THANKS

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Roy said...

Hey do you know anything about his RF lens: http://www.flickr.com/photos/kenwales/4277800414/

I just picked it up for $300 and will convert it to EOS and shoot with my 5DMK2.

Thanks,
Roy

mahasiswa teladan said...

Thanks for review, it was excellent and very informative.
mirror lens its cool
thank you :)