Photox sun reflex
![photox sun reflex photox sun reflex](https://thumbs.dreamstime.com/b/solar-cells-photovoltaic-panel-reflection-sunlight-solar-cells-photovoltaic-panel-reflection-sunlight-blue-100226700.jpg)
![photox sun reflex photox sun reflex](https://thumbs.dreamstime.com/z/pot-cover-glass-broken-has-sun-lighting-reflex-isolate-white-background-96077133.jpg)
#Photox sun reflex full#
We can conclude that the image circle of this lens is full frame with robust sharpness distribution across but a strong vignetting is also present from halfway to corners. As you can see on the background light, a strong darkening rises from half of the frame. Moreover, this test reveals another fact on the amount of high vignetting of Tokina SZX 400mm f/8 mirror lens on full frame sensors. The mirror optical design reduces color aberrations practically to zero, also optical designers seem to do a fantastic job on controlling other types of aberrations too. Respecting the above test, lens sharpness is very good and the distribution remains constant across the frame and even on far corners, any deterioration of image is barely visible. To examine the amount of sharpness variation of the Tokina SZX 400mm lens in practice, I perform a consequential photograph of the moon high above the horizon passed through the frame as follows. Typically due to lens aberrations, sharpness decreases in far corners of the image. Moreover, the distribution of sharpness across the image is another important aspect to study. Far distancing mountain landscapes and celestial bodies like the moon and sun near the horizon are among those subjects that atmospheric turbulence decreases sharpness on them and there is no escape from this issue! This phenomena leads to an interesting fact for both Astro-photographers and close up landscape photographers the simple Tokina SZX 400mm f/8 mirror lens could lead to very close result outputs on those subjects like high end glasses in terms of sharpness! Respecting turbulence's presence in the atmosphere, professionals like bird photographers typically hesitate on distancing their subject because the sharpness is easily ruined for those subjects in low altitude above horizon.
#Photox sun reflex iso#
However, the final sharpness of a photo does not depend only on lens optical characteristics instead it depends on many more parameters like vibrations, ISO sensitivity, distance of the subject, and atmospheric transparency.
#Photox sun reflex professional#
Sharpness is an always important wordiness among photographers and mirror lenses have less sharpness and contrast respect to state of the art professional glass telephotos.
![photox sun reflex photox sun reflex](https://thumbs.dreamstime.com/b/texture-sun-glare-reflexes-white-paper-texture-sun-glare-reflexes-white-paper-close-up-141754907.jpg)
In this respect, we should first precisely investigate optical characteristics of the Tokina SZX 400mm f/8 mirror lens. But let me introduce those circumstances when the output quality of this mirror lens could compete with superior glasses. The exceptional portability of Tokina SZX 400mm f/8 lens is a privilege for those professionals who plan on photo and video projects in remote areas. The new released Tokina 400mm f/8 mirror lens is a "prime" lens itself, but due to its reflective catadioptric optic and slow f/8 aperture, the target design of this lens is not definitely a new flagship on optics, but instead it is a super compact alternative for such heavy telephoto lenses! I decided to review this exciting lens with an unusual objective exploring characteristics of this lens respect to professional goals to define the border line in which this lens could act unique and brilliant in the field!įirst of all, with 355g in weight and 76.8mm in length, lightness and compactness are main characters of Tokina SZX 400mm f/8 mirror lens, so it is the only super-tele lens which could carry on photo equipment compartment of my photo sport 300 back-pack to carry far distances atop mountains without risk of broken back of heavy lenses! The following pictures show the resolving power of Tokina SZX 400mm f/8 mirror lens from a location atop mountains on the subject three kilometers away. Fast "prime" telephoto lenses with tons of glasses are considered as benchmark of optical quality among photographers.