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| The forgotten 50 https://www.yesterdaysweapons.com/phpBB3/viewtopic.php?f=17&t=14330 |
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| Author: | JPLee [ Tue Dec 27, 2022 9:43 pm ] |
| Post subject: | Re: The forgotten 50 |
A "normal" (field of view/focal length) lens is "one with a focal length (at infinity) equal to the diagonal of the image formed". 35mm (24 X 36mm) is actually 34.5mm. but the mechanics of the mirror swinging up & down in modern SLRs has made it cheaper to make & sell a 50~55mm as "normal". Look at any non SLR & see what length it has! If you're gone digital look at the sensor dimensions (not pixels) & go from there. |
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| Author: | Doc Sharptail [ Tue Dec 27, 2022 11:50 pm ] |
| Post subject: | Re: The forgotten 50 |
50mm is not that far off the industry calculated 42mm "normal" length. The easier, slightly wide 35mm lens is a bit different to work with. Nikon had a lot more to contend with than image dimensions. The normal going back as far as the nikon S-2 range finder was 50mm- it was easier to get a faster aperture out of a 50 than a 35. My current full frame D-810 has an image area of exactly 24 x 36mm, as did the nikon F, F-2, and F-3. The vertical travelling shutters in these cameras make full use of the image frame a reality. Most dlsr's are APSC/DX frame size~ slightly wider than the old 1/2 frame olympus pen-f, but not by much. The mass market digital cameras- the point and shoot pocket stuff have an image area about the diameter of a .270" bullet. Phone camera sensors are even tinier. The recent acquisition 35mm f 2.8 nikkor has been a pleasant surprise for me. I have much to do with it yet, even though it's performance cannot edge the standby 50mm f2. Regards, Doc Sharptail |
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| Author: | lyman1903 [ Wed Dec 28, 2022 8:06 pm ] |
| Post subject: | Re: The forgotten 50 |
| Author: | lyman1903 [ Wed Dec 28, 2022 8:11 pm ] |
| Post subject: | Re: The forgotten 50 |
| Author: | JPLee [ Sun Jan 15, 2023 2:15 pm ] |
| Post subject: | Re: The forgotten 50 |
True, Minolta had a couple of 58mm ones for the same reason. I was really referring to angle of view for "normal" perspective though. |
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| Author: | Doc Sharptail [ Thu Feb 09, 2023 3:39 am ] |
| Post subject: | Re: The forgotten 50 |
 Taken with the oldster Nikkor-H 50mm f2 wide open and at minimum focus distance, just slightly under 2 feet. ISO 1600. Artificial non-ballasted LED lighting. This approximates what I was getting from Tri-X shot at ASA 320, with a little less "snap". This lens was the standard of a lot of press photographers by the mid 60's. My particular sample dates to about 1963. It's rendering has gone by the way-side, but personally, I still like it a lot. Regards, Doc Sharptail |
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