600mm Moon lunacy - telescope v lens comparison by tommorules ()
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Been meaning to try this for ages.....
Shot in daylight today then de-saturated; otherwise unprocessed apart from levels/ curves. No sharpening.
600mm £350 Skywatcher ED80 telescope versus same focal length £7000 lens. I am always a fan of the underdog :)
Telescope precision focussed at 10x in live view, Canon 600mm F4L using autofocus only.
Telescope is native F7.5, therefore Canon lens was set at F8 to be comparable; trying to be as fair as possible!
So, which image belongs to which??
Thanks for looking...
Image Comments (12)
In my humble opinion I think # 2 belongs to the Telephoto and # 1 belongs to the telescope. Both are great images but # 1 has better definition. I think the trick is on the focus. Autofocus is not always so accurate as manual focus. I never capture a good image of the moon using autofocus. (Anyone would think you could have saved 6,650.00, but I like to see a photo of the Canon lens manually focused before stating this LOL)
Hi netot. I bought the telescope because I could never focus the Canon lens accurately enough - manually - on stars. I was secretly hoping the telescope would provide the better image, therefore. Unfortunately, the more contrasty and detailed (top) image is with the Canon lens! I guess in this instance the quality of the glass outweighs the focusing accuracy....
that Canon 600mm F4L is about $14,000.00 is it not? impressive for both but they were not shot exactly at the same time it would appear from the shadows being different(more pronounced on the bottom). I think the top is from Canon, but only guessing
Hi Richard. The images were taken within 10 minutes of one another. I bought the telescope because I could never focus the Canon lens accurately enough - manually - on stars. I was secretly hoping the telescope would provide the better image, therefore. Unfortunately, you are correct.... the more contrasty and detailed image is with the Canon lens! I guess in this instance the quality of the glass outweighs the focusing accuracy....