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02-13-2015, 01:42 PM   #1
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Pentax 67 90mm LS

I have 165mm LS lens for studio shooting. Btw, I'm the only guy who use the film camera. I love this lens so much but the problem is that this lens is a telephoto lens. It's really hard to use in the medium size of studio. Shooting head and waist shot is fine but for whole body shot is extremely hard to do. Also 90mm is a standard lens which is easy to use. But I'm not sure about the optical quality since few people argued about the quality of this lens.

02-13-2015, 02:18 PM   #2
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I have the 165 LS as well and it's really long for studio use. I consider it better suited for head shots. I wish I had the 90 LS though for all the same reasons in the studio. Can't address the optical quality though.
02-13-2015, 03:25 PM   #3
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The 90 Takumar LS has had some problems in the past with the leaf shutter.
02-13-2015, 10:43 PM   #4
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I found the 90mm LS lens to be a fine lens optically. I used it for 20 years without a shutter problem ( though only half of that time it was used extensively). I even used it with the 645 adapter on my film 645 to get high speed synch.

02-15-2015, 12:42 PM   #5
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Hello

I have the 90LS for my 67 and 645(via Adapter) - I think it is OK but not as brilant as the 75/4,5 or the famouse 105/2,4.

But one consideration: Typically you do not need a LS when the flash light is 3 or more stops lighter than ambient light - in most cases you will be able to get this even at 1/30 of a second.
02-15-2015, 10:58 PM   #6
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QuoteOriginally posted by klaus123 Quote
Hello

I have the 90LS for my 67 and 645(via Adapter) - I think it is OK but not as brilant as the 75/4,5 or the famouse 105/2,4.

But one consideration: Typically you do not need a LS when the flash light is 3 or more stops lighter than ambient light - in most cases you will be able to get this even at 1/30 of a second.
Well, I'm not sure to use 1/30 with flash. I'm worry about the shaking images because of the shutter speed and mirror.
02-16-2015, 12:03 AM   #7
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Some years ago I tested the effects of sync-speed and difference between flash and ambien light with a moving object (a handheld electric mixer)
I documented it in a German document, but I am sure the technical data are clear even w/o english text
Attached Images
File Type: pdf Der Mixer-small.pdf (565.6 KB, 71 views)

Last edited by klaus123; 02-16-2015 at 04:02 AM.
02-16-2015, 08:29 AM - 1 Like   #8
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The 90mm LS and the New Portra 160





02-16-2015, 09:24 AM - 1 Like   #9
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QuoteOriginally posted by sunshine7913 Quote
Pentax 67 90mm LS
I have 165mm LS lens for studio shooting. Btw, I'm the only guy who use the film camera. I love this lens so much but the problem is that this lens is a telephoto lens. It's really hard to use in the medium size of studio. Shooting head and waist shot is fine but for whole body shot is extremely hard to do. Also 90mm is a standard lens which is easy to use. But I'm not sure about the optical quality since few people argued about the quality of this lens.



While you can use a Leaf Shutter lens indoors in a studio, their primary usage is for outdoor high speed fill-in flash. So non LS lenses work fine in the studio, at the slower native 6x7 1/30 flash sync speed. You will have no problem hand holding your lens, I have used up to the 200/4 in a studio.

If you want something wider for the studio than 165mm/150mm, then I would suggest the 120mm Soft.

It can be used from f/3.5 to f/8 as a soft lens, or a regular lens above f/11. The 120/3.5 Soft also uses the same lens hood as your 165/4 LS.

You might find that focal length better for body shots than 90mm, which may be too wide.

Phil.

Last edited by gofour3; 02-16-2015 at 12:54 PM. Reason: Add more info.
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