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Moon with S-M-C Takumar 500/4.5
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PostPosted: Thu Nov 26, 2009 6:03 pm    Post subject: Moon with S-M-C Takumar 500/4.5 Reply with quote
50mm vs. 500mm :

The 500 :


Moon with the 50/4 :


And with the 500/4.5 @f/4.5 :


Not exactly an artistic work, thats why I post it here. I deleted the pic at f/8, but it is more sharp, f/16 and f/32 have been tested but my tripod is not enough stable (shake blurred pictures).


PostPosted: Sat Nov 28, 2009 1:43 am    Post subject: Reply with quote
Have you tried adding a teleconverter and giving it a go?

Here's one from my 400mm Optomax with a cheap Kitstar MC 2X teleconverter.



PostPosted: Sat Nov 28, 2009 2:01 am    Post subject: Reply with quote
CarbonR, f/8 should work fine. I prefer f/11 though. Years ago, I learned that the correct exposure for the moon was 1/125 @ f/8 with ISO 100 film, but I think f/11 works better.

Here's one I shot last month. I used Live View to insure critical sharpness, and which also raises the mirror (reduced vibration). You also need to use either a remote release or the self-timer set for no less than 10 seconds.

Century Precision Optics 500mm f/5.6 @ f/11, Canon XS @ ISO 100, 1/125


Good shot, spiralcity, but at 500mm as long as the image is sharp, you don't need a teleconverter. Here's a shot taken a couple of nights later with my Century 500 and a Vivitar 2x teleconverter. Not a whole lot of difference between the two other than the phase of the moon.



PostPosted: Sat Nov 28, 2009 2:11 am    Post subject: Reply with quote
cooltouch wrote:
CarbonR, f/8 should work fine. I prefer f/11 though. Years ago, I learned that the correct exposure for the moon was 1/125 @ f/8 with ISO 100 film, but I think f/11 works better.

Here's one I shot last month. I used Live View to insure critical sharpness, and which also raises the mirror (reduced vibration). You also need either a remote release or to use the self-timer set for no less than 10 seconds.

Century Precision Optics 500mm f/5.6 @ f/11, Canon XS @ ISO 100, 1/125


Good shot, spiralcity, but at 500mm as long as the image is sharp, you don't need a teleconverter. Here's a shot taken a couple of nights later with my Century 500 and a Vivitar 2x teleconverter. Not a whole lot of difference between the two other than the phase of the moon.



The 500mm shot by carbonR looks awfully small without a teleconverter,
the 400mm with a teleconverter are still very usable, they may not be perfect, but they work. I have a telescope I havent given a try yet.

Crop from 400mm



It would be great to see a bunch of moon shots on this thread... Very Happy


PostPosted: Sat Nov 28, 2009 2:28 am    Post subject: Reply with quote
spiralcity wrote:
The 500mm shot by carbonR looks awfully small without a teleconverter,
the 400mm with a teleconverter are still very usable, they may not be perfect, but they work. I have a telescope I havent given a try yet.


His shot looks small because he posted the full-frame image. Mine and yours are crops. If using a DSLR with a respectable megapixel level, enlargements from crops will still hold a lot of detail.

Sure, if you have a good 400mm lens and a good TC you should be able to take some great shots. As I mentioned before, I thought yours were good.

Your telescope will definitely kick things up a notch or two. I'd like to see some shots from it.

Thanks for the reminder about the moon. It's probably up far enough above the horizon by now where I can get a shot of it. Next full moon is December 2, so still about five days away.


PostPosted: Sat Nov 28, 2009 2:37 am    Post subject: Reply with quote
I dont remember how much I cropped the first image. I was getting about 1200mm of lens, I dont think it was cropped much. The second photo was a close crop.

thanks for the comment on my photo, yours looked good as well. I like moon shots and would love to see many more posted to the thread.


PostPosted: Sat Nov 28, 2009 3:48 am    Post subject: Reply with quote
Wow, beautiful moon Very Happy
Good job, hope someday I could settle down and have a garage to keep these huge lenses Smile


PostPosted: Sat Nov 28, 2009 10:55 am    Post subject: Re: Moon with S-M-C Takumar 500/4.5 Reply with quote
CarbonR wrote:

Not exactly an artistic work, thats why I post it here. I deleted the pic at f/8, but it is more sharp, f/16 and f/32 have been tested but my tripod is not enough stable (shake blurred pictures).


Maybe the tripod is not the cause for the blurry pictures - the moon moves quite quickly when you use a long telephoto lens to look at it. Just lock your lens and camera on a tripod and watch how long it takes for the moon to move out of the viewfinder image. I remember getting blurred pictures of the moon with 600mm at speeds of 1/30 of a second or longer.


PostPosted: Sat Nov 28, 2009 5:57 pm    Post subject: Re: Moon with S-M-C Takumar 500/4.5 Reply with quote
dickb wrote:
CarbonR wrote:

Not exactly an artistic work, thats why I post it here. I deleted the pic at f/8, but it is more sharp, f/16 and f/32 have been tested but my tripod is not enough stable (shake blurred pictures).


Maybe the tripod is not the cause for the blurry pictures - the moon moves quite quickly when you use a long telephoto lens to look at it. Just lock your lens and camera on a tripod and watch how long it takes for the moon to move out of the viewfinder image. I remember getting blurred pictures of the moon with 600mm at speeds of 1/30 of a second or longer.


Moonlight is reflected sunlight. It is not dim. At ISO 100, 1/125 at f/11 or f/8 (depending on your preference) will provide good exposure.

The second image I posted above was with the 500mm and a 2x. And with my 1.6x crop body, the focal length equivalent was 1600mm. Because of the 2x, I opened the lens up to f/8, so my effective f/stop was f/16. This meant I had to reduce my shutter speed to 1/60.

At this magnification, you can easily see the moon moving across the screen. But it is not moving fast enough to cause blur at 1/60 -- and I suspect even at 1/30 you're still okay. If there's blur, it's much more likely that there was either some tripod or camera shake, or the image was not focused correctly.


PostPosted: Sat Nov 28, 2009 6:22 pm    Post subject: Reply with quote
I have vertical blur, so it was caused by the tripod. It was just a test shot, now I started to use it with "real" subjects Razz
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