7D reaches further into space [pic]

That's so cool!

Matt Cham said:

CAUTION: Large photos.

Last week:
7D and Sigma 500mm x2 = 1,000mm



Tonight:
7D and Maxxum 300mm x2 x2 = 1,200mm



Next week:
7D and Sigma 500mm x3 = 1,500mm

Stay tuned!

-Matt

Click to expand...

--
Barron Fujimoto
http://www.barronfujimoto.com

Hello Matt,

Would a 2x Kenko or Minolta tele adapter work well over the complete Range of my Tamron 28-300 ? Or will it give vignetting at wide angles?

I would love to extend the range of the Tamron with a 2x adapter!

Geir Ove

Just super, have never seen a picture that good of the moon.

CC

3D and Frame Gallery
http://www.pbase.com/otfchallenge/george_mocks_3d_frame_gallery.jpg
Canadian Club (with a chaser)

Geir Ove said:

Would a 2x Kenko or Minolta tele adapter work well over the
complete Range of my Tamron 28-300 ? Or will it give vignetting at
wide angles?

I would love to extend the range of the Tamron with a 2x adapter!

Geir Ove

Click to expand...

I don't own the Tamron 28-300mm, so
I can't tell for sure about vignetting specifically.

As you already know, more lens elements
mean more chance of chromatic aberration
and flare. Zoom lenses in particular have
more elements than prime lenses...

-Matt

Hi Jay,

you only need a t-mount for your particulare model, a camera tube for the telscope, which you can get through any telscope retailer. the T-mout should be available at your camera store, or they can order you one.
Dieter

Jay Williams said:

1) Totally awesome! How much of the frame did the moon fill? Can
you post a downsized full-frame of the last image?

2) Did you use Daylight Preset for white balance? Seems like the
color is different between the two. Do you know why?

3) I know there are adapters for older cameras to attach a
telescope to them. Is it possible to attach the 7D to a telescope?
I guess the question is "is there an adapter for Maxxum cameras?"
Anyone know off the top of their head?

Thanks,
Jay
http://www.jpwphoto.com

Click to expand...

--
omineca mack

Matt Cham said:

CAUTION: Large photos.

Last week:
7D and Sigma 500mm x2 = 1,000mm



Tonight:
7D and Maxxum 300mm x2 x2 = 1,200mm



Next week:
7D and Sigma 500mm x3 = 1,500mm

Stay tuned!

-Matt

Click to expand...

--

KM Maxxum 7D, Tokina 17/f3.5, Tokina 19-35/3.5-4.5, Tamron 24-135/f3.5-5.6, KM 100-300/f4.5-5.6 APO(D), KM 50/f1.7, Sigma 50/f2.8 macro, Oly TCON17 1.7x, KM A1

Hi Matt,

using a 2x converter will give you a 56 - 600mm lens. You have no wide angle left. No sense in using a 2x in a range you already have.

You will also loose 2 stops, giving you a fairly dark viewfinder image, making it hard to focsl sharply, no auto focus availabe either.

I have not seen good results with 2x converters on any zoom. You are better off cropping. There is no physical fit with a Minota 2x apo as they are matched to fit their primes, 300 and longer. The Kenko I am not sure about, but if you use the pro version, you will have to bite the bullet and purchase a prime lens.
We don't want to degrade our images unless it is for artistic purpose.
Cheers, Dieter

Geir Ove said:

Hello Matt,

Would a 2x Kenko or Minolta tele adapter work well over the
complete Range of my Tamron 28-300 ? Or will it give vignetting at
wide angles?

I would love to extend the range of the Tamron with a 2x adapter!

Geir Ove

Click to expand...

--
omineca mack

Hello,

Thanks for replying to me (Geir). I do not mind loosing the wide angle at all, as long as the tele end gets improved.

Loosing two stops (from 6.3 to 12.5) is no problem using ISO 400 or 800, but may of course mean poor AF. It's however easy to use MF at this far end. Image quality is another issue.... Don't know how that would turn out...

Geir Ove

omineca mack said:

Geir Ove said:

Hello Matt,

Would a 2x Kenko or Minolta tele adapter work well over the
complete Range of my Tamron 28-300 ? Or will it give vignetting at
wide angles?

I would love to extend the range of the Tamron with a 2x adapter!

Geir Ove

Click to expand...

--
omineca mack

Click to expand...

--
My album at: http://objective.bitfikler.com/geirove/web/

Matt Cham said:

CAUTION: Large photos.

Last week:
7D and Sigma 500mm x2 = 1,000mm



Tonight:
7D and Maxxum 300mm x2 x2 = 1,200mm



Next week:
7D and Sigma 500mm x3 = 1,500mm

Stay tuned!

-Matt

Click to expand...

--Matt: those images are sooooo amazing.

One question (please pardon my ignorance -- and don't take this as a criticism by any stretch) .... why is the second image a different color?

Thank you.
e

diehard minoltan said:

--Matt: those images are sooooo amazing.

One question (please pardon my ignorance -- and don't take this as
a criticism by any stretch) .... why is the second image a
different color?

Click to expand...

First photo was desaturated in photoshop.
Second photo has the original color as photographed.

-Matt