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Please create G-Master f 1.2 70mm and 43mm f/1.2

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Niala2 said:
biza43 said:
Well, you can get a Pentax K1 and shoot their very good 43 and 77 Ltd series lenses.
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Your comment made me find first https://www.dpreview.com/forums/post/52712767 and then some photos of them. Interesting :-)
(..but not AF, not 70, but interesting !)
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..and I might add; they seem small and light at that too - even though very light-fast.

(Strange You're not accused yet to have degraded Pentax' reputation to infamous Leitz level for their common choices for unconventional focal lengths..)
 
sumofallfears said:
1.2 vs 1.4.....not that serious especially the performance sony has put out on these last 2 lenses wide open at 1.4....the 50 1.4 and 85 1.4 have great glass, that's why they are heavy and extremely sharp wide open. 1.2 would mean we'd have a large lens, and if you wanted amazing performance at 1.2 the glass would have to be even larger for sony's route all for a bit of thinner DoF and a little increase of aperture of just a third of a stop, not even a half stop.
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So; shall I settle for 1.4 ? Shall I ? Shall I ?
( I do like serious people )
 
Niala2 said:
Magnar W said:
Some just disagree with you. So what?
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I like arguments that do not falsely imply I said something while I did not, and could not have - if a minimum of (intellectual) honesty was brought up.
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You can't expect people to know neither your knowledge and photographic lever, nor how you are thinking or what is importand for you on a discussion forum. We are not mind readers.
 
Magnar W said:
Niala2 said:
Magnar W said:
Some just disagree with you. So what?
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I like arguments that do not falsely imply I said something while I did not, and could not have - if a minimum of (intellectual) honesty was brought up.
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You can't expect people to know neither your knowledge and photographic lever, nor how you are thinking or what is importand for you on a discussion forum. We are not mind readers.
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Ok, what You just say here strikes something that cant be just false. So; "sorry if".
 
A6300 + 50mm f/1.4 + 28mm f/2... problem almost solved.
 
Actually both the 43 mm and the 77 mm are autofocus. They're not f/1.2 though.
 
Niala2 said:
wkingsie said:
Two unusual focal lengths, I wouldn't have the slightest interest in owning.

Popular focal lengths for prime lenses are:

15mm, 24mm, 28mm, 35mm, 50mm, 85mm, 135mm.

W
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That's a good way to extrapolate that expressing my suggestion shall be un-popular :-)
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I think the other respondents have made that point.

W
 
olstrup said:
...The recipe for good pictures is to learn to use to advantage what is at ones disposal instead of sitting waiting for something which doesn't exist and likely will never be made.
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Simply mindblowing what one has to put up with gratuituous agressivity..
 
addieleman said:
I'd agree with you if my A7R2 would have the option of cropping the viewfinder image so that I could simulate a 40mm equivalent view from a 35mm lens. To me viewfinder boundaries are a great help in composing. From the olden days I remember you could even buy 6x4.5cm inlay frames for a Rolleiflex 6x6.
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Here's a way to crop your A7R2 viewfinder to 40mm:


Even olden days style focusing ;-)
 
"Simply mindblowing what one has to put up with gratuituous agressivity.."

...

Welcome to DPReview.

W
 
It was not an agression, never intended to be that. It was an honestly meant opinion without any malice intended - though obviously different from yours. Like Magnar said, this is a discussion forum, so various opinions are to be expected.

Over and out. ;-)
 
Niala2 said:
wkingsie said:
Two unusual focal lengths, I wouldn't have the slightest interest in owning.

Popular focal lengths for prime lenses are:

15mm, 24mm, 28mm, 35mm, 50mm, 85mm, 135mm.

W
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That's a good way to extrapolate that expressing my suggestion shall be un-popular :-)
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There are good arguments to have primes at the 70mm focal length you mention, the range from 50 to 85mm is thinly covered.

The high MP resolutions of today's sensors on one hand allow cropping and on the other hand require lens qualities that only primes can deliver. Covered area doubles on the square root of two, so roughly 1.414x ratio between focal lengths. If we check what is "popular" in focal length ranges then there are omissions on that ratio.

Two ranges exist with that ratio, manufacturers knew very well what that ratio did:

10-14/15-20-28-40-55/58-80-112-160 mm That range is more or less covered with some vintage 55/57/58 primes and very few 77/80 mm lenses at the weaker points. 105 or 120 might substitute 112 mm. 40 mm exists in several manufacturer ranges though, pancakes often.

12-17-24/25-35-50-70-100-140-280 mm has more precise coverage, 140 can be filled in with a 135mm but exactly your 70mm is rare in vintage or new and one that I like to have too. Prefer small size though, so f1.8/2.0 and rather an EF mount. The Sigma 70mm 2.8 macro is a very good lens, big and aged now, I may still end with that one. The Leitz 70mm is an M mount rangefinder lens. Little else exists in 70mm.

If the two ranges are merged 10-12-14-17-20-25-28-35-40-50-56-70-80-100-112-140-160 and consider the available focal lengths of primes then the 85/90/100/105 part is densely covered, so is 38/35/40/45/50 part. But between 50 and 85 mm it is a thin coverage. The ratio 85/50 is 1.7x, so a big step in area coverage. One modern 65mm prime would already cover that gap perfectly.

Whether 70mm is an odd focal length is subjective. I see many APS size users praise their adapted 50mm lenses, the angle of view corresponds with a 75mm lens on FF. 40mm pancakes are adapted on APS for their size, I do not see complaints about the resulting 60mm perspective.

Popular usually means static; supply and demand are chained to one another for no other reason than tradition. Let us hype the 65 mm focal length to break that chain.

Met vriendelijke groet, Ernst
700+ inkjet paper white spectral plots: OBA content etc.
 
Wow ! I must know little about photography for being ok with classic focal lengths ! Thanks for sharing your knowledge (and you must be quite knowledgeable since your classics are Leica). But well, I've known it since I've read about people bashing APS-C for not "letting them shoot their lenses the way it was designed for". True that 75mm is way more unnatural than 50mm (and don't let me speak about the voice in my head saying "You're doing it wrong, we engineers designed it to be used on FF, you idiot"), and that shooting a 35mm on APS-C is way worse than shooting a 50mm in FF. I just don't have the skills and vista to realise it yet. You know, the compression, and so on and so on...

--
Pierre P.
Blog: http://pierrepphoto.wordpress.com
 
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Are you drunk?

43mm? 70mm? Strange prime focal lengths.

75mm was really only ever made by Leica and its not a popular lens. That being said the 75 summilux is my most desired lens... But that is just me.

I would love an example of when you need specifically a 43mm lens at F1.2, when nothing else would 'do'. Same to be said for a 70mm.
 
Magnar W said:
Niala2 said:
With 85mm I often feel I need to part to much from "model" for "intimate" portrait wile still intruding much. With 55mm I feel like disrespectfully close wile disrespecting proportions.
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After working with photography for tens of years, I have never understood this "need" for some mm in one or another direction from available lenses, or 1/3 stop more or less of brightness. If you need to fine tune the focal lenght, then use a zoom lens, and if you need an out-of-focus background, then work with a pretty clean background, and you will get great results even from a less bright zoom lens!

In my opinion, a good photographer can do almost anything within the 43 to 77 mm area with a 50 mm lens! A poor photographer is blaming the lens! ;-)
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Hear hear. You move you feet. You didnt see Don McCullin asking the war to stop so he could change to a (specifically) 43mm F1.2 lens...
 
JT26 said:
Are you drunk?

43mm? 70mm? Strange prime focal lengths.

75mm was really only ever made by Leica and its not a popular lens. That being said the 75 summilux is my most desired lens... But that is just me.

I would love an example of when you need specifically a 43mm lens at F1.2, when nothing else would 'do'. Same to be said for a 70mm.
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