Trollmannx

Ok - then you can rule out this one - one variable less in the equation...

Not a very tempting combo to replace the FE 70-200. The Sony lens have excellent resolution in the center of the field and corner perfomance is also good (looking a bit softer because we compare ...

Another possibility is over corrected vignetting (if using in camera vignette correction) - do in extreme cares see the same with the A7 and the 1.8/55 mm lens (this lens has very step vignetting ...

If so - wanting to keep the ISO down and wanting BEST POSSIBLE quality - then it would be plain stupid not to bring along a tripod and stop down the lens a bit. Just a practical consideration...

Resolution at low frequencies is like resolution of coarse detail. Resolution wise 1 line pair per mm is regarded as low frequency. High frequencies is like resolution of fine detail. Resolution ...

Guessing is fine - mee to having the habit of assuming - an usually ending up wrong! :-D But the great thing about guessing and assuming is that it often lead to discussions and insight that we ...

Seems like this 3D pop thing is about resolution at high frequencies - lower end lenses do not resolve very fine detail very well and certainity not at low contrast - but those high end lenses do. ...

This is a flawed comparition - why should you expose properly with the APS-C camera and underexpose with the FF camera? Exposing at f/2 give similar brightness per square area on the sensor ...

What is a lot more important than sharpness alone is the angle of view of the lens. There is a world between these lenses when it comes to angle of view - the 16 mm is a true wide angle lens while ...

Well - those expensive Riccardi reducers work well - but is overkill for small telescopes. Orion refractors have ok reducers (correcting for field flatness, astigmatism and - yes: coma). The usual ...

When using a video camera for high resolution astrophotography it is rather easy to figure out how many frames to shoot. My camera has 1280x960 pixels resolution and can take about a dozen images ...

Seems like a lot of fun ahead! Watching your steps here... ;-)

A bit though this one... Have two Canon 60Da' s for grab and go astrophotography (wide angle work) but I would NOT buy this camera now because the imaging sensor is not among the best. This camera ...

More information needed to answer this one! ;-)

Think about what meget your needs - very often small and highly portable telescopes will be used a lot because they are small and handy. If you are into grab and go - and like to simplify things - ...

Had a wonderful evening under the moon. Rather calm air and comfortable temperatures made me try some high resolution imaging (yes - my telescope is small and what I call high resolution is not ...

Three out of several possibilities 1. Ooops - wrong corrector for that particular telescope? 2. Wrong distance between camera and corrector? 3. FF is very demanding and some correctors do barely ...