Pentax 150-450mm F4.5-5.6 with 1.4x converter
https://pentaxphotogallery.com/artists/barrieforbes
https://www.flickr.com/photos/189482630@N03/
The field of view will be comparable to that of a lens of 945mm focal length ( if my old codger brain is still OK - if not please feel free to correct me)
But I have used the 1.4 x on the 150-450 with my K3II and if your camera and lens are well supported it’s optically ok for sure, but not ideal; bit like using an RPGL or carrying a extension ladder o your shoulder
LR lens profile pp only
Brian.
LBA is good for you, a Lens a day helps you work, rest and play.
Just remember the 1.4x is not suitable for FF.
Depends what you mean by "not suitable". I regularly use the 1.4x convertor with the 150-450, Tamron 70-200 f2.8 and the Tamron 90 f2.8 on my K1. It works well with all these lens with only a small amount of vignette in the four corners. This I usually deal with by a minimal amount of cropping.
This was taken on the cliffs at Flamborough Head with K1, 150-450 plus 1.4x convertor. Very little vignette
Just remember the 1.4x is not suitable for FF.
Depends what you mean by "not suitable". I regularly use the 1.4x convertor with the 150-450, Tamron 70-200 f2.8 and the Tamron 90 f2.8 on my K1. It works well with all these lens with only a small amount of vignette in the four corners. This I usually deal with by a minimal amount of cropping.
This was taken on the cliffs at Flamborough Head with K1, 150-450 plus 1.4x convertor. Very little vignette
The 1.4x was designed for crop sensor, so to me that amount of vignette means "not suitable".
https://pentaxphotogallery.com/artists/barrieforbes
https://www.flickr.com/photos/189482630@N03/
Please have you a samples with these lens?
When this converter is used the main lens is recognized by ACR for distortion correction?
Thanks for your help and have a nice week.
Toni
I don't know if the camera recognises the converter for distortion correction (I usually shoot RAW) but the results are first class. See my Flickr pages at https://www.flickr.com/gp/darrelphoto/05N75s
Best
Darrel
Steve
Darrel I shoot in raw (dng) only in raw, I've seen your photos, my congrats for macro and train photos that is one of my favorite subject.
I'm considering the purchase.
I wish you the best.
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