Canon DPP and (new to me) EF 16-45mm f4

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LodgePark

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Henry
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Hi

Just bought a used Canon 16/35mm f4 from a UK main dealer, so comes with warranty and a short return period.

Bought to replace a 17/40mm with poorish edges at UW.

New lens only just arrived so still approx a fortnight to test out thoroughly.

I use Canon DPP 4 on a Mac and am slightly surprised to find that I get NO Shooting Distance Information on the lens tab of DPP.

All my other Canon lenses (including a very beat up 20/35) display distance info, should I be concerned that the 16/35mm doesn't?

Taken with a Canon 5Ds (just bought in clearance sale at knockdown price :-) ) on CF card with full size raw.

Can any one with a 16/35mm f4 and DPP tell me if there is something odd about mine?

Apart from distance question mark, the lens has excellent edges, better than the 17/40, centres about the same.

Thanks
Henry
 
Welcome Henry.

The distance info is part of a larger facility which Canon terms 'lens correction' Canon bodies come preloaded with this information for 25 commonly used lenses but there's room in the table for around 40 in total. If the 16-35/4 isn't in there then you can add it to your 5Ds.

see here

Bob
 
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I suggest you may find you will double or triple your resolution by moving to something like Lightroom or capture 1.

The image is either sharp or not. I wouldn't worry about mundane useless detail. Also, it barely needs any auto-focus at all at such wide focal length
 
Thanks Guys

As far as I can see the body has CA & Vignetting profiles for the 16/35mm loaded onto the body as I can switch them on or off.

Will have a look with EOS utility to see if I can add any more lens data to the body tomorrow.

I tend to agree with toohuge, distance data should be somewhere in the exif data, if not I'd be concerned.

I'll read the raw with an exif viewer (any suggestions for a Mac) and if not present I'll take it up with the seller.

H
 
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LodgePark said:
Thanks Guys

As far as I can see the body has CA & Vignetting profiles for the 16/35mm loaded onto the body as I can switch them on or off.

Will have a look with EOS utility to see if I can add any more lens data to the body tomorrow.

I tend to agree with toohuge, distance data should be somewhere in the exif data, if not I'd be concerned.

I'll read the raw with an exif viewer (any suggestions for a Mac) and if not present I'll take it up with the seller.

H
Click to expand...
Why?
I must have taken hundreds of thousands of images over the last 35 years, and one question I’ve never needed to know the answer to is the focus distance.
I can’t think of a single useful reason for it (you should know it’s only an approximation).
 
toohuge said:
The lens should be reporting the focal length back to the exif data. Try suggestion above about adding the profile.
But even something like Faststone image viewer displays this info from the raw file.
If it’s not reporting the focal length - send it back for another one
Click to expand...

I might be wrong but the OP is asking abut the shooting distance not the focal length? I take the shooting distance to be the measurement from the camera to the subject?
 
Phil V said:
Why?
I must have taken hundreds of thousands of images over the last 35 years, and one question I’ve never needed to know the answer to is the focus distance.
I can’t think of a single useful reason for it (you should know it’s only an approximation).
Click to expand...
Totally agree with you, it's either in focus or not, no need for a DPP focus distance estimate!

BUT having just bought it wondered if the non-reporting by DPP meant something that wasn't quite 100% right with it, as all my other lenses were posting values in the distance field.

Hence asking if anyone else had had a similar experience with their 16/35. If it's normal then no worries, if not then may need to consider a return.

H
 
admirable said:
I might be wrong but the OP is asking abut the shooting distance not the focal length? I take the shooting distance to be the measurement from the camera to the subject?
Click to expand...
Yes, but I'm only curious as DPP is not reporting a value in the distance field for the 16/35, but a distance value is quoted for all my other lens. Wondering why?

The lens is switched to AF, obviously no distance would be given if left on MF.
H
 
LodgePark said:
Thanks Guys

As far as I can see the body has CA & Vignetting profiles for the 16/35mm loaded onto the body as I can switch them on or off.
Click to expand...
You will be able to switch those settings on and off irrespective of whether the lens' correction data is available.
When you call up "Lens aberration correction" from the menu it will show the currently installed lens at the top of the screen. Immediately below this it will either be blank or "Correction data available". If it's blank then you'll need to add the lens to the body's lookup table.
 
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LodgePark said:
The lens is switched to AF, obviously no distance would be given if left on MF.
H
Click to expand...
I'm not sure that this is true....the focus distance is most likely obtained from the focus encoder and this will be active whether or not the motor was used to position the focus group.
 
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