Ed,
Proxars can be good for "artistic" work too. Just like Holgas.
But if you like image quality (and why else would you be anal and buy expensive Zeiss lenses and Hasselblad cameras instead of cheap Holgas and their top of the range plastic globes?), Proxars are the least desirable option.
Zeiss Proxars are really simple devices. Not even achromatic doublets, like those of some other manufacturers. Such achromats other brands offer should produce better image quality.
Sorry, there is simply no discussion, at least when we talk about achromats from reputed optical companies. I used to have a simple close-up lens from Hoya which I later replaced with a Pentax T132 achromat. The achromat is in a completely different league than the simple close-up lens (it is also 10x as expensive). This becomes particularly evident outside the center. By the way, according to my experience, for moderate magnifications (1:3) the achromats provide better image quality than an extension tube using the same lens (a 2.8/165mm Pentax 67 lens in my case).I will not accept as blind proof the idea that adding two elements to a lens system, instead of one, will result in invariably better performance.
Ed,
You pointed out that some people accept Holga-level images, in support of accepting the lesser image quality Proxars produce, calling it 'anal' to want something a bit better.
Which is rather puzzling, reading now how you get riled.
You like to have your opinion and standards treated with respect, after implying that someone who doesn't share your level of expectations is not "the usual photographer", even is excessively 'anal'???
Anyhow: yes, independent of whether anyone would mind, Proxars' lesser quality does show indeed.
That's how things are.
And no, it's not the number of elements. It is (should not come as a surprise) what these elements do.
Close-up lenses introduce a fair bit of colour abberations. Using an achromat does lots to remedy that.
And no again: a process lens is not necessarily the best lens....
I should think jmooney is well confused by now and besides we really need more info. ie. end product, mono/colour print, 5x5 inch or 5x5ft., colour slides for reproduction or projection? Whilst it is obviously desirable to aim for maximum image quality there is no point if the subjects are to be photographed with a hand held camera on location on a breezy day.
PS- 5* exchange from Ed and Q.G, bring it on boys, nothing better than 2 heavy-weights on the mood for a good exchange of knowledge or/and skepticism.
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