Best Bright Prime Lenses for E-PL6

Astrotripper wrote:

alexisgreat wrote:

Thanks, based on what you said, I've put the Olympus 17, 45 and 75 on my list as well as the Panasonic 15.

For me, the 15mm and 17mm seem a bit too close to justified having both.

I'll stay away from Rokinon and the mirror lenses though. Can only the Olympus lenses be autofocused?

Sigma also makes AF lenses for MFT. Those are the trio of f/2.8 primes and the new 30/1.4 that was just announced.

What about these Rokinon lenses you mentioned:

But they also make some lenses designed for mirrorless systems, for example the 10/2.8, 12/2. Their 12/2 is a very good choice for astro landscapes, provided you get a good copy.

AF with these?

About the tracking mount, I do have one, but it's the one that came with my telescope. Would that work fine with the 75mm lens?

I've been told I can do AP with it, but limited to 30 seconds (but that's by using the 2000mm OTA as the lens). I should be able to do a minute or more with just the 75mm lens, no? I'll need a dovetail - tripod adapter for the camera though.

About the tele primes, I need something to bridge my camera lenses to my telescopes. Looks like the Oly 75-300 is my best option.

Well, Panasonic has OIS, which is probably more effective than E-PL6's 2-axis IBIS.

Good point, can the IS of the lens and the IS of the body be added together?

Out of curiosity, the lenses you mentioned weren't good for the E-PL6, did you say it because of weight considerations or other reasons?

No, that's not the reason. Mirror lenses are very light, actually (which I guess might be part of the problem). You will have a hard time focusing a mirror lens on an E-PL6, unless it's on a tripod (I guess you mileage will vary depending on skill). At 300mm, even the 3-axis IBIS of my E-M10 can barely handle stabilizing live view. No idea how the 2-axis of E-PL6 would manage. And mirror lenses have an extremely shallow DoF compared to traditional lenses, so nailing focus is extremely important. See this for example:

I already have mirror lenses I want to use with my camera, they are telescope OTAs, the Nexstar 8 2000mm and ETX 90 1250mm telescopes. I assume I wont have any issues using these with the camera? The former is f/10 (f/6.3 with reducer) and the latter is f/13.8

I guess shutter shock might be an issue. I think we were already discussing this some time ago.

Yes, but I'm talking using these in long exposure times only....shortest would be 15 sec and longest about a minute. Shutter shock is only an issue between 1/40-1/400, right?