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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 23 Aug 2008 (Saturday) 02:00
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Moon lens

 
cheson74
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Aug 23, 2008 02:00 |  #1

I've been eyeballing a 400 f/5.6 for awhile now. Aside from daylight photography, I was interested in using the lens for photos of the moon. However, that would require the usage of teleconverters. I have (2) Kenko 1.4x DG TC's.

Has anybody used a 400 f/5.6 with 2 Kenko TC's for moon photography? For around the same price, I could pick up a Sigma 150-500 but I prefer a prime. I'm trying to keep the budget to around $1000.

I'm using a 5D.

Any input?


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Canon ­ Bob
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Aug 23, 2008 03:25 |  #2

Just to give you some idea, this was shot with a 400/5.6 + 2x T/C + 1.4x T/C on a 5D 1/200th at f/11. The T/C's were Canon's not Kenko's but I don't believe there'll be too much difference.

Bob

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cheson74
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Aug 23, 2008 03:47 |  #3

Thanks Bob.

I'll trade my left kidney for your primes. :)


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Canon ­ Bob
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Aug 23, 2008 03:53 |  #4

cheson74 wrote in post #6161337 (external link)
Thanks Bob.

I'll trade my left kidney for your primes. :)

That's how I got them :(

Bob


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m-bartelt
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Aug 23, 2008 04:02 |  #5

I imagine you have a really nice tripod setup too


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bubba ­ zanetti
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Aug 23, 2008 04:02 as a reply to  @ Canon Bob's post |  #6

400mm f5.6 (on a 20D) with nothing else. Its a great lens.

This is the first time i tried it on the moon & ive never really tried it again.


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xarqi
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Aug 23, 2008 04:39 |  #7

bubba zanetti wrote in post #6161358 (external link)
400mm f5.6 (on a 20D) with nothing else. Its a great lens.

This is the first time i tried it on the moon & ive never really tried it again.


QUOTED IMAGE

No need. You nailed it first time. Superb!




  
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Canon ­ Bob
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Aug 23, 2008 05:51 |  #8

xarqi wrote in post #6161402 (external link)
No need. You nailed it first time. Superb!

I would agree with that.....

My tests showed that one T/C gave better results than two T/C's. The other factor is the moisture in the atmosphere. Here in the UK, winter moon shots are usually much cleare than summer ones....the shot I posted was from mid-october last year.

Bob


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mrklaw
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Aug 23, 2008 06:07 as a reply to  @ Canon Bob's post |  #9

quick question - I was about to try this, but the moon seems not to rise until very late, so even at midnight its not up over the houses yet. I don't fancy waiting up until 3am so I've given up.

does the moon have a variable season like the sun? seems to be the opposite - i.e lower in summer.

Will I have to wait until Octoberish for it to rise up earlier at night?

(I'm UK based)


interesting about the TCs though. you say you prefer one over two. so two gives too much of a drop in image quality, to the point where the increased reach isn't worth it?


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xarqi
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Aug 23, 2008 06:18 |  #10

mrklaw wrote in post #6161548 (external link)
does the moon have a variable season like the sun? seems to be the opposite - i.e lower in summer.

My mental image says no. If anything, it would appear to oscillate around it's mean altitude (angular, not linear) with a period equal to a lunar month, not annually; and only if its orbit was inclined to the Earth's equator. I'm not sure if it is or not (I suspect it is), but I'm sure google or wikipedia would have the answer to that.

Looking at it another way, the Moon revolves around the Earth in a plane, but it doesn't know where in its orbital cycle the Earth is, nor in which direction its axis is pointing.




  
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jsinon
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Aug 23, 2008 06:27 |  #11

I've had great results with my 100-400 at 400 so the 400 prime should be great too, with or without converters. Oh yea, as someone stated above, a good tripod is a must.


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Canon ­ Bob
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Aug 23, 2008 06:43 |  #12

mrklaw wrote in post #6161548 (external link)
quick question - I was about to try this, but the moon seems not to rise until very late, so even at midnight its not up over the houses yet. I don't fancy waiting up until 3am so I've given up.
Try this site to get some ideas for now and the future http://www.jgiesen.de/​elevazmoon/index.htm (external link)
does the moon have a variable season like the sun? seems to be the opposite - i.e lower in summer.

Will I have to wait until Octoberish for it to rise up earlier at night?
(I'm UK based)
The skies will usually have lower moisture content towards the winter evenings. The other helpful thing is to have the moon as high as possible so that you're seeing through less polution

interesting about the TCs though. you say you prefer one over two. so two gives too much of a drop in image quality, to the point where the increased reach isn't worth it?
Definately the case....I haven't tried the 600L and T/C yet

Bob


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Aug 23, 2008 07:04 |  #13

...don't kick yourself too much over gear. Atmospheric conditions and the position of the moon visa-vis your location in the world play a big roll. For example Romy (Liquidstone) gets fantastic moon images from his position in the Philippines using a 40D + 100-400 + stacked TCs or his Sigmonster + TC(s), but going for him as well is the Philippine atmosphere and nearness to the Equator.

Don't forget MLU, and if you are using a 40D, use LiveView for manual focusing. :D


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Aug 23, 2008 07:07 |  #14

jsinon wrote in post #6161579 (external link)
I've had great results with my 100-400 at 400 so the 400 prime should be great too, with or without converters. Oh yea, as someone stated above, a good tripod is a must.

While I agree that a tripod is essential, if you're caught without one on a clear night then to 100-400mm does quite well hand held so the prime should only be better.

Shot a couple of years ago, hand held with 100-400mm and my old 400D
A bit soft but passable as a web image or small print.

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mrklaw
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Aug 23, 2008 07:30 as a reply to  @ John_T's post |  #15

looking around I found this link: http://zebu.uoregon.ed​u/ph121/l4a.html (external link)

which suggests the differences in altitude are based on the phases. If I read it right, then the easiest times to get a moon shot are after a new moon up to the full moon - so as its filling out, not waning? So I'll wait until after the new moon and then start checking again


edit: stellarium.org has a great app for windows or mac which really helped me visualise this.


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