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Question in regards to camera lenses
Posted 06 May 2012 - 10:39 PM
I don't have a camera lense for it, since it is made to be attached to the telescope for astrophotography.
I'd like to also take pictures of constellations, star trails, etc. with the camera.
What would be an ideal camera lense for it? Any suggestions?
Posted 06 May 2012 - 11:12 PM
Hope thats of some help.
Posted 07 May 2012 - 07:03 AM
I have an 18-50mm Sigma lens for my 450D and it's my most used lens at the moment.
Skywatcher 150PL, Meade 88mm PST stage 1 mod, Celestron Astromaster 90
EQ 3-2, EQ 2, Vixen Polarie, Canon 450D, 20D, SPC 880(900), DMK 41
Posted 07 May 2012 - 08:05 AM
As a next step the EF 200-L has great reputation.
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Skyliner 250PX; Explorer 150P; Televue Pronto; ST80; ES68°; Televue; Pentax XW; NEQ6 Pro; EQ3-2; AZ4; SXV-H9; QHY5; Canon 1000D: Sketches Deep Sky Images
Member of Cotswold AS "No anchovies unless otherwise specified. If conditions persist, consult your physician."
Posted 11 May 2012 - 11:01 AM
The former is a rotational zoom, and the latter is a push-pull, but with a zoom lock, so neither suffer from zoom creep. The only issue I have is that the 100 to 400 isn't totally weather sealed, and suffers from sucking dust - I have it services about once every 18 months to have it cleaned, but I've never had an imaging problem with them.
Both lenses are excellent quality and suffer little CA.
On the wide side of the scale, I use a EF 17 to 40 f4L (sharp) and a EF16 to 35 f2.8L (fast but sometimes not as sharp). Both are excellent lenses.
And the 50mm - my Canon 50mm EF 1.8 (Mk 1) is now over 20 years old - never let me down once, and probably one of the best 50mm lenses available. I paid about £50 for this when I bought it in 1990 - if I sold it on e-bay now, it would fetch around £140 - there's a very good reason for that, as they are highly sought after. Primes are always better than zooms, but the quality of a good prime is always reflected in the price.
Posted 11 May 2012 - 11:14 AM
And the 50mm - my Canon 50mm EF 1.8 (Mk 1) is now over 20 years old - never let me down once, and probably one of the best 50mm lenses available. I paid about £50 for this when I bought it in 1990 - if I sold it on e-bay now, it would fetch around £140
I've got the cheaper plastic, but still great lens of this one.
Better still a can drinks cooler, fits on it perfectly, to stop it misting up.
Rare female aviation geek, often found near Coningsby
Posted 11 May 2012 - 11:17 AM
Edited by themos, 11 May 2012 - 11:18 AM.
300P Dobsonian · 80mm f/6 triplet · 114mm f/8 Newtonian · 10x50 Bresser · 15x70 Revelation
PCVC740K · SPC900NC diy LX · modded 450D · Atik 16ic
300mm f/4.5 · 200mm f/2.8L · 135 mm f/3.5 · 55mm f/1.8 · 18-55mm f/3.5-5.6
TV 2.5x Barlow · Nagler 12mm · TMB 3.2mm · Ortho 9/7/5mm · Lumicon OIII · Baader UHC-S · Astronomik CLS clip
EQ6 Syntrek/EQMOD · diy Autoguided EQ1 · diy ASCOM focuser · Binoflex ST50
Posted 12 May 2012 - 03:01 PM
A simple front aperture mask is a good idea so as to prevent the star spikes caused by stopping down internally. I only cottoned on to this idea recently. No spikes in M45!
Primes will beat zooms.
Samyang 85 (mosaic):
Focus is super critical so I use a Telescope Service micro adjuster.
Edited by ollypenrice, 12 May 2012 - 03:03 PM.
Isn't it great that amateurs can get so close to the universe?
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