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Uneternal
1 year ago

What do you expect from a long focal length that just costs 120€? Of course, it’s cheap that you can only use on one tripod and that only focuses manually. Because it is not stabilized, you need from your hand and to maximum zoom at least one closing time of 1/1200, otherwise the picture is shaking you.

Qualitatively not an outrage of sharpness, but also not totally terrible.

https://youtu.be/aU7ng-ikk7M?si=7nbrZfOKqqbzch9Q

IXXIac
1 year ago

Hello

The thing is cheap but better than no optics.

But you build a SLR with changeable matte disc or the matte disc for macro/repro to focus cleanly.

Live View in the Searchrlupenmdous also goes, but often the LiveView gries too violently because of Low Light

So I know seat pictures on bird nests, feeding places and bird baths from the Dörr 420-800 version (http://www.doerr-foto.de/de-de/objective/teleobjective/zoom-teleobjectiv-8-3-3-420-800mm-t2-222502) on various cameras

The optics at 500mm is not as good as a 500/8 miraculous bag or the Korean/Chinese 500/8 mirror plate and behind 600mm it becomes more and more cruel. In the case of semi-format/DX, cruel marginal areas are not used the soupist in the area FHD up to 600mm over it only HD. The optics is phony you have to lift contrast in the post process, then the resolution also increases. Then you can also work the color lines away in sharp areas, but the aberations in the unsharp area are not taken away

The optimal range of application of the optics is from about 2.5 to 50 meters, for remote motifs the resolution decreases too far at least if you zoom over about 600mm. Diffraction problems are also visible, at least at the NEX7 and Pentax K70. This is not the case with 12MP sensors.

It is possible to laser a waterhouse aperture and, in the case of tube, this improves the dissolution and reduces the color errors of the optics, but the diffraction problem comes sooner

SirKermit
1 year ago

Anyone who knows the technical realities could handle it. See https://www.digicamclub.de/showthread.php?t=26071

What do you want to photograph?

420 to 800 mm focal length screams for a really stable tripod. The missing autofocus forces you to static motives, the initial visor from 8.3 to 16 is not able to cope with cameras with not so light-sensitive sensors when you have to screw up the ISO due to the aperture. Heat whims in summer or light wind you will feel.

Therefore, never expect miracles, because at APS-C and 800 mm we talk about some 1200 mm focal length and you have to adjust everything manually.