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What do you use?

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/08/2014 at 14:54
koshkin View Drop Down
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Originally posted by RWBlue RWBlue wrote:

FX lens on DX bodies are always a point of discussion.

First, there is vignetting.  FX on FX or DX on DX can give you vignetting.  Vignetting for those that don't know is darkening around the corners of the frame.
Not necessarily.  You get vignetting if the lens is not optimized correctly for a given image size.  You are right though that the probability of vignetting even with comparatively low end FX lenses on DX bodies is very small.  However, for nice lenses that are discussed here, I would not worry about signetting too much.

Second, I think the image with better with FX glass.  I don't know if it is the coating of quality of glass or how they put it together or....., but I can see some difference in some lenses.
If the lenses are of the same quality, you will not see any difference between FX and DX aside from sample variation.  There are a few exceptions to that: cheap lenses where edge issues of FX lenses are not visible on DX bodies, wide angle lenses where many lenses have telecentricity issues that are less visible with larger FX lenses.

Third, I have thought I was going to get a FX body for several years.  It is always just a little out of reach or, I see other needs or now the DX bodies are getting so good and several thousand less ......I have a hard time justifying the FX.  Side note, I may have a lead on a body with almost no use on it.  As it is just too heavy for the person who bought it....Trade them a D7100 for an D810 even up....Whacko

Fourth, They didn't have the 18-300 Nikkor when I bought my lens.  If they did, it would have been more difficult to decide.  But isn't the 18-300 a true 18-300 on a DX, where my 28-300 is really a 36-450mm (check my math) on a DX
Focal lengths are what they are regardless of the sensor format.  You can convert the focal length into "35mm equivalent" to figure out the field of view you will get with a given lens, but that does not mean the lens is of actually different focal length.  All that means is that a 300mm lens on a DX body will give you the same field of view as the 450mm lens on a FX body.

See a couple of comments above.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/08/2014 at 22:17
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I have seen it on Nikoncafe Vignetting does happen with these lenses in the right environment.


You are over complicating the conversation about focal length.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/09/2014 at 09:17
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Originally posted by koshkin koshkin wrote:

Originally posted by Bitterroot Bulls Bitterroot Bulls wrote:

Originally posted by RifleDude RifleDude wrote:


I wasn't aware it didn't have an OLPF. I thought that was only a feature of the D800E and D810,


Actually Ted, the 800E does have an OLPF. But it also has a "cancelling" optical glass layer. the D810, D7100, and even the D3300 are lacking the OLPF alltogether. I will keep a look out for moire, but I will deal with it when it happens. I will take the extra sharpness the rest of the time!

Just stumbled onto this.  Can you elaborate on this?  I do not fully understand how you can cancel a random blur filter.  I was under an impression that the blur filter is taken out and a different piece of glass with the same optical pathlength is added to the stack.  

Perhaps, I misunderstand something.

Thanks
ILya

Nikon is kind of vague on how it works, but they are clear they "removed the effect" of the OLPF, but kept it there.


The new cameras have it removed altogether.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/09/2014 at 09:45
koshkin View Drop Down
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Originally posted by Bitterroot Bulls Bitterroot Bulls wrote:

Originally posted by koshkin koshkin wrote:

Originally posted by Bitterroot Bulls Bitterroot Bulls wrote:

Originally posted by RifleDude RifleDude wrote:


I wasn't aware it didn't have an OLPF. I thought that was only a feature of the D800E and D810,


Actually Ted, the 800E does have an OLPF. But it also has a "cancelling" optical glass layer. the D810, D7100, and even the D3300 are lacking the OLPF alltogether. I will keep a look out for moire, but I will deal with it when it happens. I will take the extra sharpness the rest of the time!

Just stumbled onto this.  Can you elaborate on this?  I do not fully understand how you can cancel a random blur filter.  I was under an impression that the blur filter is taken out and a different piece of glass with the same optical pathlength is added to the stack.  

Perhaps, I misunderstand something.

Thanks
ILya

Nikon is kind of vague on how it works, but they are clear they "removed the effect" of the OLPF, but kept it there.


The new cameras have it removed altogether.

That makes sense.  They must be using a birefringent material of some sort as an OLPF, which splits the polarization states by a small amount.  Using an identical birefringent material mounted in an inverses manner will re-combine the polarization states.

Now that I think about, they have to do this every time they have two versions of the same camera: with and without the OLPF.  If they only had one model, they could simply position the imager a touch further from the lens and maintain the optical pathlength despite a couple of elements missing from the imager stack.

ILya
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: January/15/2015 at 01:32
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Canon mostly, and some Leica M stuff.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: January/15/2015 at 08:35
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Originally posted by SEMO Shooter SEMO Shooter wrote:

Most of my photos are taken while scuba diving.  I use an Olympus E-PL1 with either a 14-42 or 9-18 lens, in an Olympus underwater housing with 2 Inon D-2000 strobes.  I typically shoot in manual mode raw format.  I have Lightroom 4 and Photoshop Elements 9.  I like Elements much better than Lightroom, probably because I have used it more.

I bought an Olympus OM-D E-M5 and underwater housing last week and have not had much time to play with it yet.  I'm going on a dive trip 6 weeks.  Hopefully I'll have it figured out by then.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: January/15/2015 at 12:08
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Good deal, SEMO!

I'd be interested in hearing your impressions on the OM-D-M5 body, and I look forward to seeing your underwater photos!
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: January/15/2015 at 14:58
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I will update my list on this thread with the addition of a Sony RX100III.

It is a fantastic large sensor compact with a fast lens and EVF. I used it for the pic in this thread:

http://www.opticstalk.com/elk-camp-view_topic41039.html
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/17/2015 at 22:47
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I'll play.  I have the Nikon D50 we bought when my oldest was born 8 1/2 years ago.  I know less about it than I should, but it takes decent photos if you take your time.  I also use a Galaxy Note 4, and tonight I dug this bad boy out of the closet.  Thought I'd post it for you guys so you could get nostalgic:


Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/18/2015 at 05:50
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I haven't fired it up in a few years....East German  



I've got two of these and bunches of equipment and lenses.....










Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/18/2015 at 07:03
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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/18/2015 at 08:02
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I still have a Polaroid...
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/18/2015 at 08:05
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Big Grin
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/18/2015 at 18:58
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I used to have a 1950 Argus C3 Matchmatic......I think Meghan has it now.....Whatever  










I used to have an Official Safari Hat that I bought in Africa in the 80s.....guess what Meghan wears around Dallas-Fort Worth while driving around in her 4X4?    Whatever








Daddy's Girls!!   Stare






Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/18/2015 at 18:59
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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/18/2015 at 21:12
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Bucky  pay up
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/18/2015 at 21:49
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She's my little girl.....all 100 pounds of her!!   Big Grin





Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/19/2015 at 05:26
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show me your sheep!!

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That is what it is all about!!! Excellent
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